Madog was of Plas Is Clawdd and Chirk.
Date of Birth: unknown.
Place of Birth: unknown.
Bartrum (Tudur Trefor 12) gives Madog a number of 9 in his generational dating system, implying a birth date of, very roughly, about 1300.
Date of Death: unknown.
Place of Death: unknown.
Carr (p. 140) states that Madog was still alive in 1355.
Relationships
Father: Iorwerth ab Iorwerth Fychan ab Yr Hen Iorwerth.
This relationship is shown by Bartrum (Tudur Trefor 12). It is given by Carr (p. 140).
Mother: Gwladus ferch Iorwerth ap Griffri.
This relationship is shown by Bartrum (Tudur Trefor 12).
Spouse: Margred ferch Llywelyn ab Ieuaf.
This relationship is shown by Bartrum (Tudur Trefor 12).
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.)
Susanna married Ieuan ap Llywelyn.
Angharad Cynwrig ap Robert.
Gwladus Drahaus married Rhys ap Robert.
Gruffudd married Mawd ferch William Yonge.
Llywelyn.
Rhys.
References
Bartrum, Peter C., “Tudur Trefor 12” in An Electronic Version of Welsh Genealogies AD 300-1500.
[The sources Bartrum cites for Madog are: Peniarth 131 (124), written by Gutun Owain about 1480; Peniarth 131 (48), written early in the reign of Henry VIII; Peniarth 129 (56, 81), copied about 1500 from a 1497 MS by Gutun Owain; Peniarth 127 (24), written by Syr Thomas ap Ieuan ap Deicws between about 1510 and 1523.]
Carr, A.D. “The Making of the Mostyns: the Genesis of a Landed Family” in Transactions of the Honourable Society of Cymmrodorion (1979), pp. 137-157.