Claim: John VI of Vendôme who married Jeanne de Ponthieu, died in 1365.
Evidence: In 1342, he married Jeanne de Ponthieu, they had two children: John VI de Vendôme (died 1365), Count of Vendôme and Castres (1354–1365) was a member of the House of Montoire and was the son of Bouchard VI (1290–1354) and Alix de Bretagne (1297–1377). 
In 1342, he married Jeanne de Ponthieu, they had two children: 1365