Joan de Grey was born July 1386 to Robert de Grey, 5th Baron Grey of Rotherfield (1349-1387) and Elizabeth de la Plaunche (c1358-?) and died 20 November 1408 of unspecified causes. William I of England (1027-1087), Charlemagne (747-814), Alfred the Great (849-899)/s, Charlemagne (747-814)/s, Henry II of England (1133-1189)/s, Hugh Capet (c940-996)/s, William I of England (1027-1087)/s, Rollo of Normandy (860-932)/s.
|Alice Deincourt (?-?)||William Lovel, 7th Baron Lovel of Tichmerch (-1454)|
|Margaret Deincourt (?-?)|
|William Deincourt, 6th Baron Deincourt (?-?)|
|Joan de Grey (1386-1408)||July 1386||20 November 1408||John Deincourt, 5th Baron Deincourt (1381-1406)|
- William Allen Shade 22:44, September 13, 2009 (UTC)