Roger de Bertram
Roger was born on December 5th, 1224 in Mitford, Northumberland, England.  He died about 1273.

 Ida Joan
Ida was born about 1228.  She died after May 18th, 1315.

 Ada de Bertram
Ada was born before 1260.

 Agnes de Bertram
Agnes was born before 1273.

 Christiana de Bertram
Christiana was born before 1273.

 Isabel de Bertram
Isabel was born before 1273.  She died in 1281.