William de Haya & Douglas 
They had a son named Thomas.
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Personal Details
William de Haya
William was born in 1328 in Locherworth and Yester, Scotland.1 He died at the age of 64 on August 29th, 1392.1
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Children
Sheriff of Peebles Thomas de Haya
Thomas was born in 1345 in Locherworth, Scotland.2 He died at the age of 54 in December 1399.2
1 http://wc.rootsweb.ancestry.com/cgi-bin/igm.cgi?op=PED&db=shtritar&id=I79351&style=TABLE
2 http://wc.rootsweb.ancestry.com/cgi-bin/igm.cgi?op=PED&db=shtritar&id=I69800&style=TABLE
2 http://wc.rootsweb.ancestry.com/cgi-bin/igm.cgi?op=PED&db=shtritar&id=I69800&style=TABLE