, Katherine Mortimer, Countess Of Warwick Katherine Mortimer, Countess of WarwickI8754b: d: Ancestors ? ? ? Katherine Mortimer, Countess of Warwick - ? ? ? Family Group Sheet - ChildPARENT (U) ?BirthDeath Father?Mother?PARENT (U) ?BirthDeath Father?Mother?CHILDRENFKatherine Mortimer, Countess of WarwickBirthDeath