Sir Ralph de Greystock
Sir Ralph was born on October 18th, 1353.  He died at the age of 64 on April 6th, 1418.

 Katherine Clifford
Katherine was born in 1342 in England.  Katherine is no longer alive.

 Maude de Greystock
Maude was born in 1387 in England.

 Sir John de Greystock
Sir John was born in 1389.