Llywarch was Chamberlain and Treasurer to Gruffudd ap Llywelyn ap Seisyll (Bartrum Llywarch Howlbwrch 1, citing Jones pp. 112-115).
Events
Date of Birth: unknown.
Place of Birth: unknown.
Bartrum given Llywarch a number of 1 in his generational dating system, which implies a birth date of, very roughly, about 1030.
Date of Death: unknown.
Place of Death: unknown.
Relationships
Father: uncertain.
Mother: unknown.
Bartrum (Pedigrees of the Welsh Tribal Patriarchs 11) cites conflicting lines.
Spouse: Tangwystl ferch Iago ab Idwal.
This relationship is shown by Bartrum (Llywarch Howlbwrch 1).
Children:
Cynon married a daughter of Cadwallon ap Cadrod, arglwydd Mochnant.
References
Bartrum, Peter C., “Llywarch Howlbrwch 1” in An Electronic Version of Welsh Genealogies AD 300-1500.
[The source Bartrum cites for Llywarch is his own “Pedigrees of the Welsh Tribal Patriarchs.]
Bartrum, Peter C., “Pedigrees of the Welsh Tribal Patriarchs” in National Library of Wales Journal Cyf.13, rh.2, p. 93-146. (Gaeaf 1963).
Jones, Arthur (ed.) The History of Gruffydd ap Cynan. (Manchester U.P., 1910).