Yves de Vescy & Alda Tyson 
They had a daughter named Beatrix.
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Children
Beatrix de Vescy
Beatrix was born in 1090 in Alnwick Castle, Northumberland, England.2 She died whilst giving birth at the age of 25 in 1115.2
1 http://wc.rootsweb.com/cgi-bin/igm.cgi?op=PED&db=tamer&id=I19805&style=TABLE
2 http://wc.rootsweb.com/cgi-bin/igm.cgi?op=PED&db=tamer&id=I19796&style=TABLE
2 http://wc.rootsweb.com/cgi-bin/igm.cgi?op=PED&db=tamer&id=I19796&style=TABLE