Family/Spouse: Constance "of York" Plantagenet. Constance (daughter of 1st Duke of York Edmund "of Langley" Plantagenet, Duke of York and Isabella Perez, Princess of Castile and Leon) was born about 1374 in Conisborough Castle, Yorkshire, England; died on 28 Nov 1416 in Reading, Berkshire, England; was buried in Reading Abbey, Berkshire, England. [Group Sheet] [Family Chart]