William De Grandison
William was born in 1256 in Cassington, , Oxfordshire, England.  He died at the age of 79 on June 27th, 1335 in Lambourn, Hungerford, Berkshire, England.

 Blanche De Savoy
Blanche was born in 1267 in , Harpenden, Hertfordshire, England.  She died in Grandison, Lake Neufchatel, , Switzerland.

 Agnes De Grandison
Agnes was born in 1289 in Harpenden, , Hertfordshire, England.  She died at the age of 68 on December 11th, 1357 in Ruskington, , Lincolnshire, England.