William 1st Baron de Grandison , Sir
William 1st Baron de was born about 1255 in Ashperton, Herefordshire, England.  He died on June 27th, 1335 in Lambourn, Berkshire, England.  He was buried in Dore Abbey, Sussex, England.

 Blanche de Savoie
Blanche de was born in 1267 in Canton of Vaud, Switzerland.  She died about 1284.

 Agnes de Grandison
Agnes de was born about 1281 in Harpenden, Hertfordshire, England.  She died on December 11th, 1357 in Ruskington, Lincolnshire, England.