Events
Date of Birth: unknown.
Place of Birth: unknown.
Living: 1116.
The date is given by Bartrum (Bleddyn ap Cynfyn 29).
Date of Death: 1128.
Place of Death: unknown.
The date is given by Bartrum (Bleddyn ap Cynfyn 29).
Relationships
Father: Maredudd ap Bleddyn ap Cynfyn.
This relationship is shown by Bartrum (Bleddyn ap Cynfyn 1), and given by Stephenson, and by Maund.
Mother: Hunydd ferch Einudd ap Morien.
This relationship is shown by Bartrum (Bleddyn ap Cynfyn 1).
Spouse: Gwerful ferch Gwrgeneu ap Hywel.
This relationship is shown by Bartrum (Bleddyn ap Cynfyn 29).
Relationship outside of marriage: Iwera ferch Iago.
This relationship is shown by Bartrum (Bleddyn ap Cynfyn 29).
Children (by Gwerful):
(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.)
Owain Cyfeiliog (died 1197) married Gwenllian ferch Owain Gwynedd; also married Gwenllian ferch Ednywain.
Children (by Iwera):
Meurig married a daughter of Gruffudd Carno.
Children (mother uncertain):
Margred married Einion Ddistain.
Rhirid Foel.
Evidence
Brut y Tywysogion mentions Gruffudd s.a. 1113 (describing his participation in an attack on the castle of Uchtrud ab Edwin), s.a. 1122 (describing his murder of his cousin, Ithel ap Rhirid ap Bleddyn), and s.a. 1125 (recording his death).
References
Bartrum, Peter C., “Bleddyn ap Cynfyn 29” in An Electronic Version of Welsh Genealogies AD 300-1500.
[The sources that Bartrum cites for Gruffudd are Brut y Tywysogion and his own Early Welsh Genealogical Tracts.]
Bartrum, Peter C (ed.) Early Welsh Genealogical Tracts. (Cardiff: University of Wales Press, 1968).
The sources Bartrum gives for Owain are:
Achau Brenhinoedd a Thywysogion Cymru (probably based on 15th century MSS):
8f. “Madoc ap Mredudd ap Bleddyn ap Kynvyn, a Gruffudd a Howel i ddav broder. Hvnvdd verch Einvdd ap Gwenllian verch Rys ap Marchan yw mam.”
8g. “Gwenwynwyn ap Ywain Kyveilioc ap Gruffudd ap Meredudd ap Bleddyn ap Kynvyn ap Gwerystan ap Gweithfoet ap Gwny ap Gwlydden ap Gwrydyr ap Karadawg…”
Brut y Tywysogion 101 f.
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):
A 3.6 Gwenwenwen mab Ewein Kefeiliawg m. Gruffud m. Maredud ap Bledyn ap Kynfyn ap Gwerystan ap Gweithfoet ap <Gwyn> ap Gwlyden ap Gwrydyr ap Karadawg ap Lles Llawddeawg ap Ednyfet ap Gwynan ap <Gwynnawc varyfsych> ap Keidiaw ap Koryf ap Kaenawg ap Tegonwy ap Teon ap Gwineu Deu Vreudwyt ap Bywyr Lew ap Bywdeg ap Run Rud Baladyr ap Llary ap <Kasnar> Wledig ap Llud ap Beli Mawr.
Maund, K.L. "Owain ap Cadwgan: a Rebel Revisited" in The Haskins Society Journal: Studies in Medieval History Volume 13 (1999).
Stephenson, David. Medieval Powys: Kingdom, Principality and Lordships, 1132-1293. (The Boydell Press, 2016).
Williams ab Ithel, John (ed.). Brut y Tywysogion; or, The Chronicle of the Princes (London: Longman, Green, Longman, and Roberts; 1860).