Johanna married Count of Holland Willem Holland, IV before 27 Nov 1334. Willem (son of Count of Hainault WILLIAM HOLLAND, III and Countess of Hainault JEANNE De VALOIS) was born about 1317 in Le Quesnoy, Nord, Nord-Pas-de-Calais, France; died on 26 Sep 1345 in Worms, Friesland, Netherlands; was buried in 1345 in Valenciennes, Nord, Nord-Pas-de-Calais, France. [Group Sheet] [Family Chart]