Who married John I, Count of La Marche?
Catherine of Vendôme married John I, Count of La Marche on .
John I, Count of La Marche
Jean of Bourbon (John I/VII, Count of La Marche and of Vendôme), (1344 – 11 June 1393, Vendôme) was French prince du sang as the second son of James I, Count of La Marche and Jeanne of Châtillon.
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Catherine of Vendôme
Catherine de Vendôme (1354 – 1 April 1412) was a ruling countess of Vendôme and of Castres from 1372 until 1403.
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