David de Brechin & Margaret de Bonkyl 
They had a daughter named Margaret.
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Personal Details
David de Brechin
David was born in 1268 in Brechin, Anguss, Scotland.1 He died by execution, for treason against Robert I of Scotland, at the age of 52 in 1320.1
Margaret de Bonkyl
Margaret was born in 1249 in Berwickshire, Scotland.2 She died at the age of 55 in 1304.2
1 http://wc.rootsweb.ancestry.com/cgi-bin/igm.cgi?op=PED&db=shtritar&id=I81360&style=TABLE
2 http://wc.rootsweb.ancestry.com/cgi-bin/igm.cgi?op=PED&db=bevangenealogy&id=I32640&style=TABLE
2 http://wc.rootsweb.ancestry.com/cgi-bin/igm.cgi?op=PED&db=bevangenealogy&id=I32640&style=TABLE