Events
Date of Birth: unknown.
Place of Birth: unknown.
Bartrum (Llywarch ap Brȃn 2) gives Iorwerth a number of 5 in his generational dating system, implying a birth date of, very roughly, about 1170.
Date of Death: unknown.
Place of Death: unknown.
Relationships
Father: Llywarch ap Brȃn ap Dinawal.
This relationship is shown by Bartrum (Llywarch ap Brȃn 1).
Mother: Rhael ferch Gronwy ab Owain.
This relationship is shown by Bartrum (Llywarch ap Brȃn 1).
Spouse: Gwenllian ferch Hywel ab Ieuaf.
This relationship is shown by Bartrum (Llywarch ap Brȃn 2).
Children:
(Complete source citations for facts about the children on this page are currently outside of the scope of this project. Most information below comes from Bartrum.)
Adda of Bryncelli.
Rhys.
Cadwgon.
Maredudd married Angharad ferch Hywel.
References
Bartrum, Peter C., “Llywarch ap Brȃn 2” in An Electronic Version of Welsh Genealogies AD 300-1500.
[The source that Bartrum cites for Iorwerth is his own Early Welsh Genealogical Tracts.]
Bartrum, Peter C (ed.) Early Welsh Genealogical Tracts. (Cardiff: University of Wales Press, 1968).
The sources that Bartrum gives for Iorwerth are:
Hen Lwythau Gwynedd a’r Mars.
4a. “Kadwgon a Iorwerth meibon Llywarch ap Brân ap Dinawal ap Ednydd m. Aelan m. Alker m. Tudwal m Rhodri mawr.”
4b. “Rhael ferch Oronw ap Ewein ap Edwin oedd fam Kadwgon a Iorwerth meibyon Llywarch ap Brân.”
4e. “Gwraig Iorwerth ap Llowarch oedd Wenlliant ferch Howel ap Ieuaf ap Ewein ap Trahayarn ap Karadawg ap Gwynn ap Gollwyn.”
The Record of Caernarvon (56).
Guy, Ben. Medieval Welsh Genealogy. (The Boydell Press, 2020).
From Guy’s critical edition of the Llywelyn ab Iorwerth genealogies, which were based on an archetype created no later than the first half of the fourteenth century from an original compilation dating to the early thirteenth century, partly based on earlier written sources (Note that Guy is striving for textual rather than genealogical accuracy):
50.1 Kadwgon a Iorwerth, meibion Llywarch ap Bran ap <Dynawal> ap Eynyd m. Aelan m. Alker m. Tudawal m. Rodri Mawr.
50.1.1 Rael ferch Oronw ap Ewein ap Edwin oed fam Kadwgon a Iorwerth, meibyon Llywarch ap Brann.
50.3 Gwraig Iorwerth ap Llowarch oed Wenlliant ferch Howel ap Ieuaf ap Ewein ap Trahayarn ap Karadawg ap Gwynn ap Gollwyn.