Anne de Mortimer1388 - 1411 Born Sat, 27 December 1388 Died Sun, 22 September 1411 Buried Kings Langley Priory, Kings Langley Details Parents Countess of Cambridge Anne Mortimer Lived 22 years, 8 months, 26 days father Roger Mortimer 1374 - 1398 mother Alianore Holland 1370 - 1405 Siblings Brother Edmund Mortimer 1391 - 1425 Brother Roger Mortimer 1393 - 1413 Sister Eleanor Mortimer 1395 - 1422