Sir John De Grey
Sir John was born in 1387 in Ruthyn, Denbigh, Wales.  He died at the age of 52 on August 27th, 1439.

 Constance Holand
Constance was born about 1387 in Pleshey Castle, Essex, England.  She died on November 14th, 1437.

 Edmund De Grey
Edmund was born on October 26th, 1416 in Ruthyn, Denbigh, Wales.  He died at the age of 73 on May 22nd, 1490 in England.

 Thomas De Grey
Thomas was born in 1418.