See also
| Husband: | Seisyll + ap EDNYWAIN (938- ) | |
| Wife: | Prawst + verch ELISE (940- ) | |
| Children: | LLywelyn + ap SEISYLL (980-1021) | |
| Name: | Seisyll + ap EDNYWAIN | |
| Sex: | Male | |
| Father: | Ednywain + ap EINYDD (913-938) | |
| Mother: | - | |
| Birth | 0938 | Wales |
| Name: | Prawst + verch ELISE | |
| Sex: | Female | |
| Father: | Elise + ap ANARAWD (885-942) | |
| Mother: | - | |
| Birth | 0940 | Gwynedd, Wales |
| Name: | LLywelyn + ap SEISYLL | |
| Sex: | Male | |
| Spouse: | Angharad + verch MAREDYDD (982-1058) | |
| Birth | 0980 | Rhuddlan, Flintshire, Wales |
| Occupation | King of Gwynedd and Deheubarth | |
| Title | frm 1018 to 1023 (age 37-43) | King of Gwynedd and Deheubarth |
| Death | 1021 (age 40-41) | |
SEISYLL, son of --- .
m PRAUST of Gwynedd, daughter of ELISEDD ap Anarawd of Gwynedd & his wife ---. The primary source which confirms her parentage and marriage has not yet been identified.
Seisyll & his wife had four children:
1. LLYWELYN ap Seisyll ([after 980]-[1021/23]). [The Gwentian Chronicle records "Llywelyn son of Seisyllt lord of Maes Essyllt…although but a youth not more than fourteen years of age" marrying in 994 [352].] He succeeded in 999 as King of Gwynedd and Dyfed. The Gwentian Chronicle records that "Llewelyn son of Seisyllt" killed in battle "Aeddan son of Blegywyrd and his four nephews" in 1015 and "took the government upon himself" [353]. The Chronicle of the Princes of Wales records that "a certain Scot falsely pretended to be the son of king Maredudd and caused himself to be named king…Rein" in 1020 and "Llywelyn son of Seisyll, supreme king of Gwynedd and the chief and most renowned king of all the Britons made war against him" [354]. The Annales Cambriæ record the death in 1023 of "Lewelin filius Seisil" [355]. The Annals of Tigernach record that “Leobelín rí Bretan” died in [1021/23] [356]. The Chronicle of the Princes of Wales records that "Llywelyn son of Seisyll died" in 1021 [357]. [The Gwentian Chronicle records that "Llywelyn son of Seisyllt and Cynan son of Seisyllt" opposed "the Scots [who] came to Carmarthen accompanied by Hywel and Maredydd sons of Edwin son of Einion" in 1021 but that Llywelyn was killed in the battle [358].] m (994) as her first husband, ANGHARAD of Gwynedd, daughter of MAREDUDD King of Deheubarth and Gwynedd & his wife ---. [The Gwentian Chronicle records that "Llywelyn son of Seisyllt lord of Maes Essyllt…although but a youth not more than fourteen years of age" married "Yngharad, daughter of Meredydd on of Owain" in 994 [359].] Her first marriage is confirmed by the Chronicle of the Princes of Wales which records that "Bleddyn son of Cynvyn [and] Gruffudd son of Llywelyn…were brothers by the same mother…Angharad daughter of Meredudd king of the Britons" [360]. She married secondly (1023) Cynfyn ap Gwerstan King of Powys. [The Gwentian Chronicle records that "Yngharad the widow of Llywelyn son of Seisyllt married Cynvyn son of Gwerystan lord of Cibwyr" in 1023 [361].] The Chronicle of the Princes of Wales records in 1106 that "Bleddyn and Rhiwallon, sons of Cynvyn, were brothers, from Angharad daughter of king Maredudd" [362]. Llywelyn & his wife had four children:
a) GRUFFYDD ap Llywelyn (-killed Snowdonia 5 Aug 1063). [The Gwentian Chronicle records that "his son…Grufydd" succeeded his father as prince of Gwynedd after "Llywelyn son of Seisyllt" was killed in 1021 [363].]
- see below.
b) RHYS (-executed Bullington before 4 Jan 1053). Florence of Worcester records that "Rhys brother of Griffyth king of South Wales" was put to death "on account of the plundering inroads he had frequently made" and his head brought to the king at Gloucester 4 Jan 1053 [364]. Simeon of Durham records that "the brother of Griffin king of the South Welsh…Res" was killed "at Bulendum" and his head brought to the king at Gloucester "on the eve of our Lord's epiphany" in 1053 [365]. [The Gwentian Chronicle records that "Rhys son of Llewelyn son of Seisyllt, brother of prince Grufudd, went to Glamorgan and Gwent…and the men of the country attacked him and drove him to the borders of Mercia where they caught and beheaded him, and sent his head to Edward king of the Saxons to Gloucester" in 1056 [366].]
c) BLETHGENT (-after 1063). Simeon of Durham records that "Griffin king of the Britons" was killed by his own men "Non Aug" in 1064 and that the king "gave the land of the Britons to his brothers Blechgent and Rithwallan" [367].
d) RITHWALLAN (-after 1063). Simeon of Durham records that "Griffin king of the Britons" was killed by his own men "Non Aug" in 1064 and that the king "gave the land of the Britons to his brothers Blechgent and Rithwallan" [368].
2. HYWEL (-killed in battle 1021). [The Gwentian Chronicle records that "Hywel son of Seisyllt, brother to Llywelyn son of Seisyllt" was defeated and killed in battle by "Eulaf [Olav II King of Norway] [who] came to the island of Britain…to Menevia…and…Dyved" in 1021 [369].]
3. CYNAN (-killed 1025). The Chronicle of the Princes of Wales records that "Llywelyn son of Seisyll died" in 1021 [370]. [The Gwentian Chronicle records that "Llywelyn son of Seisyllt and Cynan son of Seisyllt" opposed "the Scots [who] came to Carmarthen accompanied by Hywel and Maredydd sons of Edwin son of Einion" in 1021 but that Llywelyn was killed in the battle [371].] The Chronicle of the Princes of Wales records that "Cynan son of Seisyll was killed" in 1025 [372]. The Gwentian Chronicle records that "the Saxons came to Glamorgan and the action of Ystradywain was fought where they killed Cynan son of Seisyllt and all his sons", dated to 1032 from the context [373]. m ---. The name of Cynan´s wife is not known. Cynan & his wife had [two or more] children:
a) sons (-killed in battle Ystradywain [1032]). [The Gwentian Chronicle records "the action of Machwy…where Meredydd son of Edwin was slain by the sons of Cynan son of Seisyllt, brother to Llywelyn son of Seisyllt to revenge the murder of their uncle", dated to 1032 from the context [374]. The Gwentian Chronicle records that "the Saxons came to Glamorgan and the action of Ystradywain was fought where they killed Cynan son of Seisyllt and all his sons", dated to 1032 from the context [375].]
4. ROTPERT . [The Gwentian Chronicle records that "Rotpert son of Seisyllt, lord of Maes Essyllt, brother to Cynan son of Seisyllt" defeated "the Saxons" and made peace with "Iestin son of Gwrgan", dated to 1032 from the context [376].] m firstly EVILIAU, daughter of GWRGENEU & his wife ---. m secondly ---. Rotpert & his first wife had one child:
a) ARDDEN . [The Gwentian Chronicle records that "Iestin son of Gwrgan…after the death of Denis daughter of Bleddyn son of Cynvyn his first wife" requested in marriage the daughter of "Rotpert son of Seisyllt…Ardden by Eviliau daughter of Gwrgeneu his first wife and was refused by her father on account of her age" but that he "ravished her against her will", dated to [1032/36] from the context [377].]