William Vivonia De Fortibus Lord
William was born about 1225 in Chewton, , , England.  He died on May 22nd, 1259.  He was buried in May 1259.

 Maud De Ferrers
Maud was born about 1228 in , , , England.  She died on March 12th, 1298.  She was buried in March 1298.

 Joan De Vivonia
Joan was born in 1249.  She died at the age of 65 in 1314.

 Cecilia De Vivonia
Cecilia was born in 1257 in England.  She died at the age of 63 on January 10th, 1320 in Stoke, Under Hamden, , England.  She was buried in 1320.