In about 1423 he married Jacqueline, Countess of Hainaut and Holland (died 1436), daughter of William VI, Count of Hainaut. Through this marriage Gloucester assumed the title "Count of Holland, Zeeland and Hainault", and briefly fought to retain these titles when they were contested by Jacqueline's cousin Philip the Good (see: War of Succession in Holland). They had a stillborn child in 1424. The marriage was annulled in 1428, and Jacqueline died (disinherited) in 1436.