Nicholas I Sanudo was the fifth Duke of the Archipelago from 1323 to his death. He was the son and successor of William I

William I Sanudo

William I Sanudo was the fourth Duke of the Archipelago from 1303 to his death. He was the son and successor of Marco II....

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Nicholas fought under his brother-in-law Walter

Walter V of Brienne

Gautier or Walter V of Brienne was born in Brienne-le-Château, Aube, Champagne, France. He was the son of Hugh de Candie des Brienne, known as Hugh of Brienne, Count of Brienne and Lecce, and Isabella de la Roche, daughter of Guy I of la Roche, Duke of Athens...

, Duke of Athens, at the disastrous Battle of Halmyros

Battle of Halmyros

The Battle of Halmyros, of Orchomenos, or of the Cephissus was fought on 15 March 1311 between the Frankish Greek forces of Walter V of Brienne and the mercenaries of the Catalan Company, resulting in a devastating victory for the Catalans....

 on 15 March 1311. He was one of the few knights on the losing side to escape with his life and liberty.

He was succeeded by his brother John I

John I Sanudo

John I Sanudo was the sixth Duke of the Archipelago from 1341 to his death.He was the brother and successor of Nicholas I and son of William I. His other brother was Marco Sanudo, Lord of Milos....

. His other brother was Marco Sanudo, Lord of Milos

Marco Sanudo, Lord of Milos

Marco Sanudo was a Lord of Milos.He was a son of William I Sanudo and the brother of Nicholas I Sanudo and John I Sanudo, who were all Dukes of the Archipelago....

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Sources

• Setton, Kenneth M. Catalan Domination of Athens 1311–1380. Revised edition. Variorum: London, 1975.
• Setton, Kenneth M. (general editor) A History of the Crusades: Volume III — The Fourteenth and Fifteenth Centuries. Harry W. Hazard, editor. University of Wisconsin Press: Madison, 1975.