Thomas married Beatriz of Portugal, Countess of Arundel on 26 Nov 1405 in Lambeth, Surrey, England. Beatriz (daughter of John I 'o Falso' of Avis, King of Portugal and Inez Perez) died on 23 Oct 1439 in Bordeaux, France; was buried in Collegiate Church, Arundel. [Group Sheet] [Family Chart]