William "Fort" DE VIVONNE
William "Fort" was born about 1225 in Of Albermarle, Scotland.¹   He died on May 22nd, 1259.¹ 

 Maud (Matilda) DE FERRERS
Maud (Matilda) was born about 1224 in Of Derbyshire, England.^1 1 

 Joan De Fortibus DE VIVONNE
Joan De Fortibus was born about 1239 in Hertfordshire, England.²   She died in 1314.² 

 Cicely DE VIVONNE
Cicely was born about 1253 in Of Hatch, Somersetshire, England.¹   She died in Stoke-Under-Hamden, Somersetshire, England.  She was buried in Fort In Poitore.^1 1