William 1st Baron GRANDISON & Sybil de TREGOZ 
They had a daughter named Katherine de.
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Personal Details
William 1st Baron GRANDISON
William 1st Baron was born about 1255 in Ashperton, Hereforshire, England. He died on June 27th, 1335 in Lambourn, Berkshire, England.
Sybil de TREGOZ
Sybil de was born about 1271 in Ewyas harold, Herefordshire, England. She died on October 21st, 1334 in Dore Abbey, Susexshire, England.
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Children
Katherine de GRANDISON
Katherine de was born about 1304 in AShford, Hertfordshire, England. She died on November 23rd, 1349 in Bisham, Berkshire, England.