**William de Grandison
**William was born in 1255 in Cassington, Oxfordshire, England.  He died at the age of 80 on June 27th, 1335.

 **Sibyl de Tregoz
**Sibyl was born in 1270 in Ewyas, Hereford, England.  She died at the age of 64 on October 21st, 1334.

 **Mabilia de Grandison
**Mabilia was born about 1294 in Ashperton, Herefordshire, England.

 **Katherine de Grandison
**Katherine was born about 1304 in Ashford, Hertfordshire, England.  She died on November 23rd, 1349 in Bisham, Berkshre, England.