1.0 De Beaumont, Adeliza (F b. ABT. 1035 Beaumont, Sur-Risle, France d. 11 JUL 1091 Rouen, France ) + De Grentmesnil, Hugh , Lord of Grentmesnil (M b. ABT. 1032 Normandy, France )
1.0 De Vieilles-Harcourt, Humphrey (M b. ABT. 980 Pont-Audemer, France d. 28 SEP 1044 Normandy, France ) + De La Haie, Aubreye (F b. ABT. 984 Pontaudemer, France ) ( m. ABT. 1010 France )
2.1 De Beaumont, Roger (M b. ABT. 1022 Pont Audemer, France ) + ~NONE, Adeliza, Countess of Meulent (F b. ABT. 1014 Ponteaudemer, France ) ( m. 1040 France )
3.1 De Beaumont, Robert , Count of Meulan (M b. ABT. 1046 Pont-Audemer, France ) + Vermandois, Isabel (F b. ABT. 1081 Valois, France d. 13 FEB 1130/31 St. Martin Parish, Surrey, England ) ( m. 1096 France )
4.2 De Beaumont, Robert , Lord Justice of England (M b. 1098 France d. 5 APR 1168 St. Martin Parish, Surrey, England ) + ~NONE, Amicia, Cts. Leices, Waiet & Gail (F b. ABT. 1100 Norfolk, England ) ( m. NOV 1117 Brittany, France )
5.1 De Beaumont, Robert , Earl of Leicester (M b. ABT. 1117 Beaumont, France d. 31 AUG 1190 Durazzo Provence, West Albania ) + ~NONE, Petronilla, of Grantmesnil (F b. ABT. 1115 Leicestershire, England d. 1 APR 1212 Leicester, Leicestershire, England )
6.1 De Beaumont, Amicia , Countess of Leicester (F b. ABT. 1133 Leicester, Leicestershire, England ) + De Montfort, Simon III , Seigneur De Montfort (M b. 1140 Montfort Amaury, Ile De France, France ) ( m. Leicestershire, England )
5.2 De Beaumont, Hawise (F b. ABT. 1129 Leice, England )
1.0 De Beaumont, Yves (M b. ABT. 945 Normandy, France ) + ~NONE, (? ) ( m. ABT. 974 Normandy, France )