Walter De Sully
Walter was born about 1234 in Glamorgan, Wales.

 Mabel De Somery
Mabel was born in 1234 in Dudley, Stafford, England.

 Raymond De Sully
Raymond was born in 1271 in Great Torrington, England.  He died at the age of 71 in 1342.  He was buried in 1342.