Isabel married Edmund "of Langley" England, [DUKE OF YORK] after 1 Jan 1371/1372 in Of Hertford Cast, Hertford, Hertfordshire, England. Edmund (son of Edward III King of Eng Plantagenet and Queen Phillippa of Hainault, Countess of Holland") was born on 5 Jun 1341 in , King's Langley, Hertfordshire, England; was christened in , King's Langley, Hertfordshire, England; died on 1 Aug 1402 in , Langley, Hertfordshire, England; was buried in Church of the Do, Langley, Hertfordshire, England. [Group Sheet] [Family Chart]