Earl of Ulster John de Burgh & Elizabeth de Clare 
They had a son named The Brown.
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Personal Details
Earl of Ulster John de Burgh
John was born in 1286 in Ulster, Ireland.1 He died at the age of 27 on June 18th, 1313.2
Elizabeth de Clare
Elizabeth was born on September 16th, 1295 in Tewkesbury, Gloucester, England.2 She died at the age of 65 on November 4th, 1360.3
1 http://wc.rootsweb.com/cgi-bin/igm.cgi?op=GET&db=arciek&id=I26731
2 http://wc.rootsweb.com/cgi-bin/igm.cgi?op=PED&db=jdp-fam&id=I4635&style=TABLE
3 http://wc.rootsweb.com/cgi-bin/igm.cgi?op=PED&db=arciek&id=I28295&style=TABLE
4 http://wc.rootsweb.com/cgi-bin/igm.cgi?op=PED&db=jdp-fam&id=I5066&style=TABLE
2 http://wc.rootsweb.com/cgi-bin/igm.cgi?op=PED&db=jdp-fam&id=I4635&style=TABLE
3 http://wc.rootsweb.com/cgi-bin/igm.cgi?op=PED&db=arciek&id=I28295&style=TABLE
4 http://wc.rootsweb.com/cgi-bin/igm.cgi?op=PED&db=jdp-fam&id=I5066&style=TABLE