Humphrey De Bohun
Humphrey was born before 1208.  He died on September 24th, 1275.

 Maud de Lusignan
Maud was born in 1208.  She died at the age of 33 on August 14th, 1241.

 Humphrey De Bohun
Humphrey was born about 1220 in of Hereford, England.  He died on October 27th, 1265.

 Isabel De Bohun
Isabel was born about 1234.