Margaret de Quincy, 2nd Countess of Lincoln, was born circa 1206 to Robert de Quincy (-1217) and Hawise of Chester (1180-1242) and died March 1266 of unspecified causes. She married John de Lacy (c1192-1240) . She married Walter Marshal, 5th Earl of Pembroke (1196-1245) 6 January 1242 JL . Charlemagne (747-814)/s, Hugh Capet (c940-996)/s, William I of England (1027-1087)/s.
|Offspring of Margaret de Quincy, Countess of Lincoln and John de Lacy (c1192-1240)|
|Maud de Lacy, Countess of Lincoln (1223-c1287)||25 January 1223||1287||Richard de Clare, 6th Earl of Hertford (1222-1262)|
|Edmund de Lacy, 2nd Earl of Lincoln (c1227-1258)|