Hugo Grotius and the Free Seas: A Bibliography

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Source: In Grotius's The Free Sea, trans. Richard Hakluyt, with William Welwod’s Critiuqe and Grotius’s Reply, ed. David Armitage (Indianapolis: Liberty Fund, 2004).

There have been only two English translations of Mare Liberum. The last was in 1916, as part of the series of classics in the history of international law published by the Carnegie Endowment for International Peace.1 This translation was avowedly a product of debates on neutral shipping during the First World War: “Since the month of August, 1914, the expression ‘Freedom of the Seas’ has been on the lips of belligerent and neutral, and it seems as advisable as it is timely to issue—for the first time in English—the famous Latin tractate of Grotius proclaiming, explaining, and in no small measure making the ‘freedom of the seas.’”2 However, though the Carnegie Endowment’s edition may have been the first translation “issue[d]” in English, it was not the only, or even the first, English translation. That had been undertaken three hundred years before by the great English memorialist of overseas activity and promoter of English trade and colonization Richard Hakluyt the younger.3

The manuscript of the translation in the Inner Temple Library in London (MS Petyt 529) is a fair copy in Hakluyt’s own hand. The twenty-six-leaf quarto was originally bound in vellum, of which a small patch survives containing the title “Mare liberum / The free Sea.” The flyleaf notes that it was “Translated into English by Mr Rich: Hackluyt &c.”4 Only brief extracts from the translation have ever been printed.5 It has attracted little commentary from Hakluyt scholars and remains entirely unknown to scholars of Grotius, let alone to any wider readership. This edition therefore represents the first publication of an unknown contemporary translation of a major work in the history of political thought by a translator of historical significance in his own right.

The Free Sea was one of only three book-length translations Hakluyt himself undertook. The two others—from the French and Portuguese—both appeared in print during Hakluyt’s lifetime.6 The only translation from the Latin—of a linguistic manual for European travelers to the East Indies—with which his name has been associated was commissioned by the English East India Company in 1614.7 It is unclear whether Hakluyt was responsible for the translation or was simply the agent by which it reached the company.8 It is nonetheless possible that The Free Sea was the result of a commission from the company. The arguments of The Free Sea could just as easily have supported the English company’s claims against the Portuguese as the VOC’s and were, moreover, used during the Anglo-Dutch colonial conferences of 1613 and 1615 to combat Dutch pretensions to exclusive access to the East Indies. However, no payments to Hakluyt for a translation are recorded in the Court Books of the East India Company. Until further evidence is discovered, the occasion for his translation and the reason it was not published can only be matters for speculation. All that is certain is that the translation can have been undertaken no earlier than the publication of Mare Liberum in the spring of 1609 and no later than Hakluyt’s death in November 1616.

It has been said that Hakluyt “stood very high in the two aspects of translation concerning which modern readers are most demanding. The one is mastery of technical vocabulary; the other is unraveling of complicated syntax.”9 Neither of these qualities is conspicuous in his translation of The Free Sea. Hakluyt’s occasional mistranslations reveal his ignorance of the technical vocabulary of the law, particularly Roman law; Grotius’s original Latin has been included as necessary in the footnotes to clarify these mistranslations. Hakluyt’s translation is also quite literal in its adherence to Grotius’s Latin syntax; to clarify the meaning of the text, spelling and punctuation have been modernized throughout.

William Welwod was professor of mathematics and of civil law at the University of St. Andrews in Scotland and produced the first British treatise on the law of the sea, in 1590.10 His reply to Chapter V of Mare Liberum comprised Chapter XXVII of his next work on maritime law, An Abridgement of All Sea-Lawes (1613).11 Two years later, he expanded his criticisms of Grotius at the behest of Anne of Denmark, the wife of King James VI and I, in his De dominio maris (1615).12 The text printed here is a modernized version of Chapter XXVII of Welwod’s Abridgement, with Welwod’s marginal references expanded and amended to follow current practices for citing classical, biblical, and Roman law texts.

The manuscript of Grotius’s reply to Welwod, like that of De Jure Praedae, was discovered in 1864 among the de Groot family papers.13 Entitled the “Defensio capitis quinti Maris Liberi oppugnati a Guilielmo Welwodo .= .= . capite XXVII ejus libri . . . cui titulum fecit Compendium Legum Maritimarum,” it was first printed in 1872 and was translated into English in 1924.14 This edition substantially reproduces this translation, except that quotations from The Free Sea and from Welwod’s reply have been taken from the texts printed in this edition.


Works of Hugo Grotius

published works

Grotius, Hugo. Briefwisseling van Hugo Grotius. Edited by P. C. Molhuysen, B. L. Meulenbroek, and H. J. M. Nellen. 17 vols. The Hague: M. Nijhoff, 1928–2001.

Grotius, Hugo. De Jure Belli ac Pacis Libri Tres. Edited by Francis W. Kelsey. 2 vols. Oxford: Clarendon Press, 1925.

Grotius, Hugo. De Jure Praedae Commentarius. Edited by H. G. Hamaker. The Hague, 1868.

Grotius, Hugo. De Jure Praedae Commentarius. I: Commentary on the Law of Prize and Booty. Translated by Gwladys L. Williams and Walter H. Zeydel. II: The Collotype Reproduction of the Original Manuscript of 1604 in the Handwriting of Grotius. 2 vols. Oxford: Clarendon Press, 1950.

Grotius, Hugo. “Defensio capitis quinti Maris Liberi oppugnati a Guilielmo Welwodo … capite XXVII ejus libri … cui titulum fecit Compendium Legum Maritimarum.” In Mare Clausum: Bijdrage tot de Geschiedenis der Rivaliteit van Engeland en Nederland in de Zeventiende Eeuw, by Samuel Muller, 331–61. Amsterdam: F. Muller, 1872.

Grotius, Hugo. “Defense of Chapter V of the Mare Liberum.” In “Some Less Known Works of Hugo Grotius,” translated by Herbert F. Wright. Bibliotheca Visseriana 7 (1928): 154–205.

Grotius, Hugo. Mare Liberum, sive De Jure quod Batavis competit ad Indicana commercio. Leiden, 1609.

Grotius, Hugo. Mare Liberum, sive De Jure quod Batavis competit ad Indicana commercio. New York: Carnegie Endowment for International Peace, 1952.

Grotius, Hugo. The Freedom of the Seas. Translated by Ralph Van Deman Magoffin. New York: Oxford University Press, American Branch, 1916.

Grotius, Hugo. Von der Freiheit des Meeres. Edited and translated by Richard Boschan. Leipzig: F. Meiner, 1919.


Grotius, Hugo. “The Free Sea.” Translated by Richard Hakluyt. MS Petyt 529. Inner Temple Library, London.

Other Works Referred to in the Text and Notes

All classical references have been verified in the standard editions and translations available in the Loeb Classical Library.

Accursius. Glossa in Digestum novum. Venice, 1487.

Alciati, Andrea. Opera Omnia. Frankfurt, 1617.

Alsop, J. D. “William Welwood, Anne of Denmark and the Sovereignty of the Sea.” Scottish Historical Review 49 (1980): 171–74.

Ambrose. De Nabuthe. In Patrologia Latina, ed. Migne, XIV.

———. De officiis ministrorum. In Patrologia Latina, ed. Migne, XVI.

———. Hexaemeron. In Patrologia Latina, ed. Migne, XIV.

Angelus de Ubaldis [Angelo degli Ubaldi]. Consilia. Frankfurt, 1575.

———. In Digestum vetus. Lyons, 1561.

———. Super I–IX Codicis. Milan, 1487.

Aquinas, Thomas. Secunda secundae Sancti Thomae … domini Thomae de Vio, Caietani … commentaribus adornata. Lyon, 1540.

Arthus, Gotthard. Dialogues in the English and Malaiane Languages. Translated by Augustine Spalding. London, 1614.

Augustine. De civitate Dei. 7 vols. Cambridge, Mass.: Harvard University Press, 1957–72.

———. Questionum in Heptateuchum. In Patrologia Latina, ed. Migne, XXXIV.

Avienus, Rufius Festus. Arati Phaenomena. Edited by Jean Soubiran. Paris: Les Belles Lettres, 1981.

Ayala, Balthazar. De jure et officiis bellicis et disciplina militari libri III. Edited by John Westlake. Washington, D.C.: Carnegie Institution of Washington, 1912.

Balbus, Joannes Franciscus [Giovanni Francesco Balbi]. De praescriptionibus. Cologne, 1573.

Baldus de Ubaldis [Baldo degli Ubaldi]. Consiliorum. 5 vols. Venice, 1608–9.

———. Super Digesto veteri. 2 vols. Lyons, 1535.

———. Super Feudis. Lyons, 1566.

Bartolus of Sassoferrato. Opera omnia. Venice, 1596.

———. Tyberiadis … tractatus de fluminibus tripertitus. Bologna, 1576.

Bernard of Clairvaux. De consideratione. In Patrologia Latina, ed. Migne, CLXXXII.

Borschberg, Peter. “The Seizure of the Sta. Catarina Revisited: The Portuguese Empire in Asia, VOC Politics and the Origins of the Dutch-Johor Alliance (1602–ca. 1616).” Journal of Southeast Asian Studies 33 (2002): 31–62.

Calendar of State Papers, Colonial Series. Edited by W. Nöel Sainsbury, et al. 40 vols. London: Great Britain Public Record Office, 1860–1926.

Cassiodorus, Flavius Magnus Aurelius. Variae. Monumenta Germaniae Historica, XII. Berlin: Weidmann, 1961.

Castrensis, Paulus [Paul de Castro]. In primam Codicis partem commentaria. 2 vols. Venice, 1582.

———. In primam Digesti veteris partem commentaria. 2 vols. Venice, 1582.

Castro, Alfonso de. De potestate legis poenalis. Lyon, 1566.

Clark, G. N., and van Eysinga, W. J. M. The Colonial Conferences Between England and the Netherlands in 1613 and 1615, Bibliotheca Visseriana 15 (1940).

Clement of Alexandria. Stromata. In Ante-Nicene Fathers, II, edited by Alexander Roberts and James Donaldson. 24 vols. Edinburgh, 1867–72.

Connan, François de. Commentarium Juris civilis libri decem. Hanau, 1609.

Corpus juris canonici, 2 ed. Edited by Emil Friedberg. Leipzig, 1879–81.

Covarruvias y Leyva, Diego de. Opera omnia. 2 vols. Venice, 1614.

Cowell, John. Institutiones juris Anglicani ad methodam Institutionem imperialium compositae et digestae. Cambridge, 1605.

Cujas, Jacques. Opera omnia. 6 vols. Lyon, 1606.

Documentos remettidos da India, ou Livros das monções. Edited by Raymundo Antonio de Bulhão Pato, et al. 10 vols. Lisbon: Royal Academy of Sciences, 1880–1982.

Doneau, Hugues. Commentariorum de Jure civili libri viginti octo. 5 vols. Frankfurt, 1595–97.

Douaren, François. Omnia . . . opera. Frankfurt, 1607.

Faber, Jean. Super Institutionibus. Lyon, 1557.

Fachineus, Andreus [Andrea Faccini]. Controversiarum juris libri tredecim. 2 vols. Cologne, 1626.

Felinus [Felino Maria Sandeo]. Commentariorum in Decretalium libros V. 3 vols. Venice, 1564.

Feudorum libri duo in Juris Civilis. Lyons, 1569.

Freitas, Justo Seraphim de. De justo imperio Lusitanorum Asiatico. Valladolid, 1625.

Fulton, Thomas Wemyss. The Sovereignty of the Sea. London: W. Blackwood, 1911.

Gentili, Alberico. De jure belli libri tres. Edited by C. Phillipson. 2 vols. Oxford: Clarendon Press, 1933.

[Glossators.] Corpus glossatorum juris civilis. General editor, Mario Viora. 11 vols. Turin: Ex Officina Erasmiana, 1966–73.

Guicciardini, Francesco. Historia d’Italia. Edited by Giovanni Rosini. 6 vols. Milan, 1850.

Haakonssen, Knud. “Hugo Grotius and the History of Political Thought.” Political Theory 13 (1985): 239–65.

Hakluyt, Richard. The Original Writings and Correspondence of the Two Richard Hakluyts. Edited by E. G. R. Taylor. 2 vols. London: Hakluyt Society, 1935.

Harmenopulus, Constantinus. Epitome juris civilis quae legum prochiron et hexabiblos inscribitur. Paris, 1540.

Harrison, John, and Laslett, Peter. The Library of John Locke. Oxford: Oxford University Press, 1965.

Heinrich von Gorkum. De bello justo. In Tractatus consultatorii, fols. 50–57. Cologne, 1503.

Justinian. Corpus juris civilis [The Civil Law]. Edited by S. P. Scott. 17 vols. Cincinnati: The Central Trust Company, 1932.

Locke, John. Two Treatises of Government. Edited by Peter Laslett. Cambridge: Cambridge University Press, 1988.

Mainus, Jason [Giasone del Maino]. In primam Digesti veteris. 2 vols. Venice, 1589.

Nazianzen, Gregory. “Panegyric on Basil.” In The Nicene and Post-Nicene Fathers, VII, edited by Philip Schaff and Henry Wace. 14 vols. New York: Scribner and Sons, 1890–1900.

Nonius, Marcellus. De compendiosa doctrina libros XX. Edited by W. M. Lindsay. 3 vols. Leipzig: B. G. Teubner, 1903.

Osório, Jerónimo. De rebus Emmanuelis, Lusitania regis. Cologne, 1547.

Panormitanus [Niccoló de’ Tudeschi]. Commentaria ad tertium libros decretalium. 2 vols. Turin, 1577.

Parks, George Bruner. Richard Hakluyt and the English Voyages. New York: American Geographical Society, 1928.

Patrologiae cursus completus . . . series Latina. Edited by Jacques-Paul Migne. 221 vols. Paris, 1844–64.

Placentinus, Petrus. In Summam Institutionum. Lyon, 1536.

Quinn, D. B., ed. The Hakluyt Handbook. 2 vols. London: Hakluyt Society, 1974.

Reusch, F. H. Der Index der verbotenen Bücher. 2 vols. Bonn: M. Cohen and Son, 1883–85.

Rogers, F. M. “Hakluyt as Translator.” In The Hakluyt Handbook, edited by D. B. Quinn, I, 37–47.

Selden, John. Mare Clausum seu De dominio maris. London, 1635.

Siete Partidas, Las. Translated by S. P. Scott and edited by Robert I. Burns. 5 vols. Philadelphia: University of Pennsylvania Press, 2001.

Sigonio, Carlo. Opera omnia. 6 vols. Milan, 1732–37.

Solórzano Pereira, Juan. De Indiarum jure. 2 vols. Madrid, 1629.

Stobaeus. Florilegium. Edited by Thomas Gainsford. 4 vols. Oxford, 1822.

Suárez, Rodericus [Roderigo Juárez]. Consilia duo … de usu maris. In Tractatus de mercatura seu mercatore, Benvenuto Stracca, 850–68. Cologne, 1576.

Sylvester Prierias [Silvestro Mazzolini da Priero]. Summa Silvestrina. 2 vols. Lyons, 1524.

Theophilus. Paraphrasis … in Juris civilis institutiones. Geneva, 1610.

Torquemada, Juan de. Summa de ecclesia. Rome, 1489.

Tuck, Richard. Philosophy and Government, 1572–1651. Cambridge: Cambridge University Press, 1993.

———. The Rights of War and Peace: Political Thought and the International Order from Grotius to Kant. Oxford: Oxford University Press, 1999.

Van Ittersum, Martine. “Profit and Principle: Hugo Grotius, Natural Rights Theories and the Rise of Dutch Power in the East Indies, 1595–1615.” Ph.D. dissertation, Harvard University, 2002.

Vázquez de Menchaca, Fernando. Controversiarum illustrium … libri tres. Frankfurt, 1572.

———. De successione … resolutione. Salamanca, 1559.

Vitoria, Francisco de. Political Writings. Edited by Anthony Pagden and Jeremy Lawrance. Cambridge: Cambridge University Press, 1991.

Welwod, William. An Abridgement of All Sea-Lawes. London, 1613.

———. De dominio maris. London, 1615.

———. The Sea Law of Scotland. Edinburgh, 1590.

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Hugo Grotius, The Freedom of the Seas, trans. Ralph Van Deman Magoffin (New York: Oxford University Press, American Branch, 1916).


James Brown Scott, “Introductory Note,” in Grotius, The Freedom of the Seas, trans. Magoffin, p. v. The first German translation followed in 1919: Grotius, Von der Freiheit des Meeres, ed. and trans. Richard Boschan (Leipzig: F. Meiner, 1919).


George Bruner Parks, Richard Hakluyt and the English Voyages (New York: American Geographical Society, 1928), 212–13, 257; D. B. Quinn and A. M. Quinn, “A Hakluyt Chronology,” in The Hakluyt Handbook, ed. D. B. Quinn, 2 vols. (London: Hakluyt Society, 1974), I, 324.


Hugo Grotius, “The Free Sea,” trans. Richard Hakluyt, Inner Temple Library, MS Petyt 529, fol. 2r.


The Original Writings and Correspondence of the Two Richard Hakluyts, ed. E.= G.= R. Taylor, 2 vols. (London: Hakluyt Society, 1935), II, 497–99.


F. M. Rogers, “Hakluyt as Translator,” in The Hakluyt Handbook, ed. Quinn, I, 37–39.


Gotthard Arthus, Dialogues in the English and Malaiane Languages, trans. Augustine Spalding (London, 1614).


Quinn and Quinn, “A Hakluyt Chronology,” in The Hakluyt Handbook, ed. Quinn, I, 328; Calendar of State Papers, Colonial Series, ed. W. Nöel Sainsbury et al., 40 vols. (London: Great Britain Public Record Office, 1860–1926), II: East Indies, China and Japan, 1513–1616, 272.


Rogers, “Hakluyt as Translator,” in The Hakluyt Handbook, ed. Quinn, I, 45.


William Welwod, The Sea Law of Scotland (Edinburgh, 1590).

[ 11]

William Welwod, An Abridgement of All Sea-Lawes (London, 1613), 61–72.


William Welwod, De dominio maris (London, 1615); J. D. Alsop, “William Welwood, Anne of Denmark and the Sovereignty of the Sea,” Scottish Historical Review 49 (1980): 171–74.


A collotype of the original manuscript is available in Grotius, Mare Liberum (New York, 1952), a compendium of facsimiles assembled for an abortive edition of Mare Liberum by the Carnegie Endowment for International Peace.


Hugo Grotius, “Defensio capitis quinti Maris Liberi oppugnati a Guilielmo Welwodo . . . capite XXVII ejus libri . . . cui titulum fecit Compendium Legum Maritimarum” (ca. 1615), in Mare Clausum: Bijdrage tot de Geschiedenis der Rivaliteit van Engeland en Nederland in de Zeventiende Eeuw, by Samuel Muller (Amsterdam: F. Muller, 1872), 331–61; Grotius, “Defense of Chapter V of the Mare Liberum,” in “Some Less Known Works of Hugo Grotius,” trans. Herbert F. Wright, Bibliotheca Visseriana 7 (1928): 154–205.