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Geoffre of Villehardouin was born between 1150 and 1154 into an aristocratic family of French crusaders which presided over a court at Achaea. In 1185, he was given the title of “Maréchal,” or Marshall, of Champagne, and in this capacity was selected in 1199 by the French barons as one of six delegates to travel to Venice and arrange with the Doge for the transportation of the crusaders to the Holy Land. The next years of Villehardouin's life are chronicled in Conquête, which takes the reader through the 1204 conquest of Constantinople and beyond, to 1207, when the baron Boniface de Montferrat was killed in Thrace. With the death of Matthieu de Montmorency, Villehardouin assumed the leadership of the Champagne faction of the French army, and in 1205 was named “Maréchal de Champagne et de Roumaine.” He took part in the fourth crusade from 1202 till 1204
While the time and place of Villehardouin's death are not known, it is believed that he died between 1212 and 1218.

He took part in the fourth crusade from 1202 till 1204.

The vessels shown on the stamp had the intention to show a vessel used in the voyage from Venice to the East Mediterranean. For the transport of the troops were used “coches” which were built in Venice. It were large round ships built in the traditional Mediterranean way, with one mast with a large square sail. But I believe the designer of the stamp has used a vessel depict on a seal of La Rochelle from around 1200.

https://erenow.net/postclassical/crusades/845.php
https://www.enotes.com/topics/geoffroi- ... cal-essays
France 1959 15F + 5F sg 1428, scott?