*Sir William Gascoigne Lord of Gawthorpe
born about 1409 Gawthorpe, Yorkshire, England
died 1463/64 Gawthorpe, Yorkshire, England

father:
*William Gascoigne
born about 1389 Gawthorpe, Yorkshire, England
died before1466 Gawthorpe, Yorkshire, England

mother:
*Margaret Clarell
born about 1389 Alnwick, Yorkshire, England
died after 1441 Gawthorpe, Yorkshire, England

siblings:
?Anne Gascoigne born about 1404 Harewood, Yorkshire, England
?Katherine Gascoigne born about 1407 Harewood, Yorkshire, England
?Elizabeth (Isabel) Gascoigne born about 1411 Harewood, Yorkshire, England
?Alice Gascoigne born about 1413 Harewood, Yorkshire, England died 3 July 1482 England
?Henry Gascoigne born about 1415 Micklefield, Yorkshire, England died 25 August 1457

spouse:
*Jane Neville Lady Gawthorpe
born about 1412 Oversley and Wormsley, Warwickshire, England
died 1486 Gawthorpe, Yorkshire, England

children:
*Sir William Gascoigne born about 1431 Gawthorpe, Yorkshire, England
died 4 March 1486/87 Gawthorpe, Yorkshire, England
Margaret Gascoigne born about 1433

biographical and/or anecdotal:

notes or source:
LDS
ancestry.com
Appears to be some confusion re dates & siblings.