Richard (1st Earl of Cambridge) Plantagenet

 Anne (Lady) Mortimer
Anne (Lady) was born on December 27th, 1388 in New Forest, West, Meath, Ireland.¹   She died at the age of 22 in September 1411 in Kings Langley, parish.¹ 

 Isabella Plantagenet
Isabella was born about 1409.  She died on October 2nd, 1484.