Nielsen Hayden genealogy
Ancestors of Margaret de Keynes
┌── Ralph de Keynes (of Barton, Northamptonshire, England - Between 1175 and 1176)
┌── Hugh de Keynes (of Milton Keynes, Buckinghamshire, England - Aft 29 May 1217)(m. 1166)
│ └── (Unknown) de Maminot
│
┌── Lucas de Keynes (of Milton Keynes, Buckinghamshire, England - Bef 4 Oct 1259)
│ └── Amabel de Bereville ( - Bef 28 Jul 1221)(m. 1166)
│
┌── John de Keynes (1232 of Milton Keynes, Buckinghamshire, England - Bef 10 Jan 1283)
┌── Robert de Keynes (of Milton Keynes, Buckinghamshire, England - ??)
│ └── Maud ( - Aft 1283)
│