Edmond FitzWilliam & Catherine Clifton 
They had a son named Richard.
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Children
Sir Richard FitzWilliam
Richard was born in 1422 in Aldwarke, Yorkshire, England.2 He died at the age of 56 on September 22nd, 1478.2
1 http://wc.rootsweb.ancestry.com/cgi-bin/igm.cgi?op=PED&db=:ah5834a&id=I5469
2 http://wc.rootsweb.ancestry.com/cgi-bin/igm.cgi?op=PED&db=buenavista&id=I23519&style=TABLE
2 http://wc.rootsweb.ancestry.com/cgi-bin/igm.cgi?op=PED&db=buenavista&id=I23519&style=TABLE