Thomas "The Magnificent" de Berkley
Thomas "The Magnificent" was born in Warwickshire, England.  He died on July 13th, 1417.

 Margaret de Isle Warren
Margaret de Isle was born about 1356 in Warwickshire, England.  She died about 1386.

 Elizabeth de Berkley
Elizabeth was born in 1386 in Abergavenny, Montgomeryshire, Wales.  She died at the age of 36 in 1422.