 John De Mainwaring, son of Randle De Mainwaring and Margery De Venables.Born 1394 at Over, Cheshire,, England, died Sep 1480 at Over, Cheshire,, England, 85 or 86 years Married/ Related to:  Margaret Delves, daughter of John Delves and Margaret De Norwood.Born 1395 at Over-Peover, Cheshire, England, died 1490 at ,, Cheshire, England, 94 or 95 years Child: 1. William De MainwaringBorn 1410 at Over Peover, Cheshire, England, died 1470 at Over Peover, Flintshire, England, 59 or 60 years | |||