Alberico Gentili graduated from the University of Perugia as doctor of law in 1572.
By 1580 he was in London &, with patronage of Robert Dudley, Earl of Leicester, came to Oxford University: by 1581, he was professor of Roman Law; by 1585, Regius Professor of Civil Law. This last position he held for 21 years.
From about 1590 onwards Gentili seems to have spent much of his time establishing a practice in the High Court of Admiralty in London. (This court is rare example of an English court following the civilian/Roman tradition). Admittted in 1600 to Gray's Inn, London)
His key publications have been translated into English:
De legationibus libri tres Internat 750 G338a (Classics of international law, no. 12) considering role of ambassadors.
De iure belli libri tres (1598) (Internat 750 G338b (Classics of international law, no. 16) 3 because he considers when war can be justified ad bellum, rules during battle in bello and the roles of law after post bellum . For English translation see volume 2 at
De armis Romanis has been translated more recently
Francisco de Vitoria c1483-1546
Balthazar Ayala, 1548-1584.
Jean Bodin 1530-1596