Gwerthefyr (Vortepor the Tyrant) ab Aergul Brenin Dyfed & partner 
They had a son named Cyngar.
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Personal Details
Gwerthefyr (Vortepor the Tyrant) ab Aergul Brenin Dyfed
Gwerthefyr, known as Vortepor the Tyrant, was born in Dyfed, Cymru.1
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1 http://wc.rootsweb.ancestry.com/cgi-bin/igm.cgi?op=PED&db=aet-t&id=I54772&style=TABLE
2 http://wc.rootsweb.ancestry.com/cgi-bin/igm.cgi?op=PED&db=aet-t&id=I54759&style=TABLE
2 http://wc.rootsweb.ancestry.com/cgi-bin/igm.cgi?op=PED&db=aet-t&id=I54759&style=TABLE