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{{Short description|Early medieval Welsh kingdom}}{{EngvarB|date=November 2020}} |
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{{Infobox |
{{Infobox country |
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|native_name = |
|native_name = {{native name|owl|Teyrnas Seisyllwg}} |
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|conventional_long_name = Kingdom of Seisyllwg |
|conventional_long_name = Kingdom of Seisyllwg |
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|common_name = Seisyllwg |
|common_name = Seisyllwg |
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|era = [[Middle Ages]] |
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|continent = Europe |
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|region = British Isles |
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|country = Wales |
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|era = Middle Ages |
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| ⚫ | |||
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|event_start = Changed name from Ceredigion |
|event_start = Changed name from Ceredigion |
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|year_start = 680 |
|year_start = 680 |
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|year_end = 920 |
|year_end = 920 |
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|event_end = Union with Dyfed forming Deheubarth |
|event_end = Union with Dyfed forming Deheubarth |
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|p1 = Kingdom of Ceredigion |
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|flag_p1 = |
|flag_p1 = Escutcheon of Ceredigion.svg |
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|border_p1 = no |
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|s1 = Deheubarth |
|s1 = Deheubarth |
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|flag_s1 = Flag of Deheubarth.svg |
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|image_flag = |
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|flag_type = |
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|image_coat = |
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|symbol_type = |
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|image_map = Medieval_Wales.JPG |
|image_map = Medieval_Wales.JPG |
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|image_map_caption = Medieval kingdoms of Wales |
|image_map_caption = Medieval kingdoms of Wales |
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|capital = |
|capital = |
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|latd=53|latm=14|latNS=N|longd=4|longm=1|longEW=W |
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|leader1 = |
|leader1 = |
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|year_leader1 = |
|year_leader1 = |
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| footnotes = {{Note|1}} |
| footnotes = {{Note|1}} |
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}} |
}} |
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'''Seisyllwg''' ({{IPA-cy|sɛiˈsəɬʊɡ|lang}}) was a [[petty kingdom]] of medieval [[Wales]].<ref name=Davies>Davies, p. 85</ref> It is unclear when it emerged as a distinct unit, but according to later sources it consisted of the former [[Kingdom of Ceredigion]] plus the region known as [[Ystrad Tywi]]. Thus it covered the modern county of [[Ceredigion]], part of [[Carmarthenshire]], and the [[Gower Peninsula]]. It is evidently named after [[Seisyll]], king of Ceredigion in the 7th or early 8th century, but it is unknown if he was directly responsible for its establishment. In the 10th century Seisyllwg became the |
'''Seisyllwg''' ({{IPA-cy|sɛiˈsəɬʊɡ|lang}}) was a [[petty kingdom]] of medieval [[Wales]].<ref name=Davies>Davies, p. 85</ref> It is unclear when it emerged as a distinct unit, but according to later sources it consisted of the former [[Kingdom of Ceredigion]] plus the region known as [[Ystrad Tywi]]. Thus it covered the modern county of [[Ceredigion]], part of [[Carmarthenshire]], and the [[Gower Peninsula]]. It is evidently named after [[Seisyll ap Clydog|Seisyll]], king of Ceredigion in the 7th or early 8th century, but it is unknown if he was directly responsible for its establishment. In the 10th century Seisyllwg became the centre of power for [[Hywel Dda]], who came to rule most of Wales. In 920 Hywel merged Seisyllwg with the [[Kingdom of Dyfed]] to form the new kingdom of [[Deheubarth]]. |
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==Origins== |
==Origins== |
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It is unclear when Seisyllwg emerged as a distinct unit. It is assumed to have been named for [[Seisyll ap Clydog]], [[King of Ceredigion]] in the 7th or early 8th century, and as such he is traditionally regarded as its founder.<ref name=Lloyd257>Lloyd, p. 257 and note.</ref> Seisyll appears in the [[Harleian genealogies]] for the Kings of Ceredigion,<ref>[http://www.kmatthews.org.uk/history/harleian_genealogies/26.html Harleian genealogy 26].</ref> but no early sources attribute the foundation of Seisyllwg to him, and the name Ceredigion continues to be used into the 9th century.<ref name=Koch>Koch, p. 1602.</ref> The name Seisyllwg appears in some later sources, such as the [[Book of Llandaff]], the [[Welsh Triads]], and the [[Welsh law]]s, the latter of which describes it as one of the three principal subdivisions of South Wales, along with [[Morgannwg]] and ''Reinwg'' (probably [[Kingdom of Dyfed|Dyfed]]).<ref name=Lloyd257/><ref>Jones, pp. 61–62.</ref> However, the first clear description of the territory is in the [[ |
It is unclear when Seisyllwg emerged as a distinct unit. It is assumed to have been named for [[Seisyll ap Clydog]], [[King of Ceredigion]] in the 7th or early 8th century, and as such he is traditionally regarded as its founder.<ref name=Lloyd257>Lloyd, p. 257 and note.</ref> Seisyll appears in the [[Harleian genealogies]] for the Kings of Ceredigion,<ref>[http://www.kmatthews.org.uk/history/harleian_genealogies/26.html Harleian genealogy 26].</ref> but no early sources attribute the foundation of Seisyllwg to him, and the name Ceredigion continues to be used into the 9th century.<ref name=Koch>Koch, p. 1602.</ref> The name Seisyllwg appears in some later sources, such as the [[Book of Llandaff]], the [[Welsh Triads]], and the [[Welsh law]]s, the latter of which describes it as one of the three principal subdivisions of South Wales, along with [[Kingdom of Morgannwg|Morgannwg]] and ''Reinwg'' (probably [[Kingdom of Dyfed|Dyfed]]).<ref name=Lloyd257/><ref>Jones, pp. 61–62.</ref> However, the first clear description of the territory is in the [[Four Branches of the Mabinogi#Pwyll.2C Prince of Dyfed|First Branch]] of the [[Mabinogion|Mabinogi]], where Seisyllwg is said to include the four [[cantref]]s of Ceredigion plus the three of [[Ystrad Tywi]], a description which accords with that in the laws.<ref name=Lloyd257/> |
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==Later history and merger with Dyfed== |
==Later history and merger with Dyfed== |
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In 872, [[Gwgon]], the last in the traditional line of kings of Ceredigion, drowned, leaving no heir. Gwgon's sister, [[Angharad verch Meurig|Angharad]], was married to [[Rhodri the Great]] of [[Kingdom of Gwynedd|Gwynedd]], who became steward over Gwgon's realm. While this gave Rhodri no standing to press a claim to kingship himself, he was able to install his and Angharad's younger son, [[Cadell ap Rhodri|Cadell]], as the new King of Seisyllwg.<ref>Lloyd, p. 325.</ref> Cadell ruled as a vassal to his father, and later, to his elder brother [[Anarawd ap Rhodri|Anarawd]], who established the Dinefwr family. |
In 872, [[Gwgon]], the last in the traditional line of kings of Ceredigion, drowned, leaving no heir. Gwgon's sister, [[Angharad verch Meurig|Angharad]], was married to [[Rhodri the Great]] of [[Kingdom of Gwynedd|Gwynedd]], who became steward over Gwgon's realm. While this gave Rhodri no standing to press a claim to kingship himself, he was able to install his and Angharad's younger son, [[Cadell ap Rhodri|Cadell]], as the new King of Seisyllwg.<ref>Lloyd, p. 325.</ref> Cadell ruled as a vassal to his father, and later, to his elder brother [[Anarawd ap Rhodri|Anarawd]], who established the [[House of Dinefwr|Dinefwr family]]. |
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After Cadell's death in 911, Seisyllwg was divided among his two sons, [[Hywel Dda| |
After Cadell's death in 911, Seisyllwg was divided among his two sons, [[Hywel Dda|Hywel]] (later known as Hywel Dda, or Howel the Good), and Clydog.<ref name=Lloyd333>Lloyd, p. 333.</ref><ref>Koch, p. 945.</ref> Hywel probably already had control over the neighbouring [[kingdom of Dyfed]] by that time; there are no known kings of Dyfed following the death of [[Llywarch ap Hyfaidd]] in 904, and Hywel is known to have been married to Llywarch's daughter, Elen.<ref name=Lloyd333/> He certainly had control over it by the time Clydog died in 920, leaving the whole of Seisyllwg to Hywel. Hywel quickly merged Seisyllwg and Dyfed into the new kingdom of [[Deheubarth]], which covered most of southwest Wales.<ref name=Davies/><ref name=Lloyd333/> From this power base, he later went on to unite almost all of Wales. |
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==Notes== |
==Notes== |
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==References== |
==References== |
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*Davies, John (2007). ''A History of Wales (Hanes Cymru)''. Penguin Books. {{ISBN|978-0-14-028475-1}}. |
*Davies, John (2007). ''A History of Wales (Hanes Cymru)''. Penguin Books. {{ISBN|978-0-14-028475-1}}. |
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*Jones, Basil (1851). [https://books.google.com/books?id=Dqw1AAAAMAAJ |
*Jones, Basil (1851). [https://books.google.com/books?id=Dqw1AAAAMAAJ "Vestiges of the Gael in Gwynedd"]. ''Archaeologia Cambrensis'', pp. 1–86. W. Pickering. |
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*{{cite book |last= Koch|first= John T. |
*{{cite book |last= Koch|first= John T.|title= Celtic Culture: A Historical Encyclopedia| publisher= ABC-CLIO|year= 2006}} |
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*{{cite book |title=A History of Wales from the Earliest Times to the Edwardian Conquest|last= Lloyd|first= John Edward| |
*{{cite book |title=A History of Wales from the Earliest Times to the Edwardian Conquest|last= Lloyd|first= John Edward|author-link= John Edward Lloyd|year= 1912|publisher= Longmans, Green, and Co.|url= https://archive.org/details/bub_gb_NYwNAAAAIAAJ|quote=Lloyd history of Wales.|access-date=July 7, 2010}} |
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{{coord|53|14|N|4|1|W|type:country|display=title}} |
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{{coord missing|Dyfed}} |
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[[Category:920 disestablishments]] |
[[Category:920 disestablishments]] |
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Latest revision as of 14:59, 22 April 2024
Kingdom of Seisyllwg Teyrnas Seisyllwg (Old Welsh) | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| 680–920 | |||||||||
 Medieval kingdoms of Wales | |||||||||
| Common languages | Welsh | ||||||||
| Government | Monarchy | ||||||||
| Historical era | Middle Ages | ||||||||
• Changed name from Ceredigion | 680 | ||||||||
• Union with Dyfed forming Deheubarth | 920 | ||||||||
| |||||||||
Seisyllwg (Welsh: [sɛiˈsəɬʊɡ]) was a petty kingdom of medieval Wales.[1] It is unclear when it emerged as a distinct unit, but according to later sources it consisted of the former Kingdom of Ceredigion plus the region known as Ystrad Tywi. Thus it covered the modern county of Ceredigion, part of Carmarthenshire, and the Gower Peninsula. It is evidently named after Seisyll, king of Ceredigion in the 7th or early 8th century, but it is unknown if he was directly responsible for its establishment. In the 10th century Seisyllwg became the centre of power for Hywel Dda, who came to rule most of Wales. In 920 Hywel merged Seisyllwg with the Kingdom of Dyfed to form the new kingdom of Deheubarth.
Origins[edit]
It is unclear when Seisyllwg emerged as a distinct unit. It is assumed to have been named for Seisyll ap Clydog, King of Ceredigion in the 7th or early 8th century, and as such he is traditionally regarded as its founder.[2] Seisyll appears in the Harleian genealogies for the Kings of Ceredigion,[3] but no early sources attribute the foundation of Seisyllwg to him, and the name Ceredigion continues to be used into the 9th century.[4] The name Seisyllwg appears in some later sources, such as the Book of Llandaff, the Welsh Triads, and the Welsh laws, the latter of which describes it as one of the three principal subdivisions of South Wales, along with Morgannwg and Reinwg (probably Dyfed).[2][5] However, the first clear description of the territory is in the First Branch of the Mabinogi, where Seisyllwg is said to include the four cantrefs of Ceredigion plus the three of Ystrad Tywi, a description which accords with that in the laws.[2]
Later history and merger with Dyfed[edit]
In 872, Gwgon, the last in the traditional line of kings of Ceredigion, drowned, leaving no heir. Gwgon's sister, Angharad, was married to Rhodri the Great of Gwynedd, who became steward over Gwgon's realm. While this gave Rhodri no standing to press a claim to kingship himself, he was able to install his and Angharad's younger son, Cadell, as the new King of Seisyllwg.[6] Cadell ruled as a vassal to his father, and later, to his elder brother Anarawd, who established the Dinefwr family.
After Cadell's death in 911, Seisyllwg was divided among his two sons, Hywel (later known as Hywel Dda, or Howel the Good), and Clydog.[7][8] Hywel probably already had control over the neighbouring kingdom of Dyfed by that time; there are no known kings of Dyfed following the death of Llywarch ap Hyfaidd in 904, and Hywel is known to have been married to Llywarch's daughter, Elen.[7] He certainly had control over it by the time Clydog died in 920, leaving the whole of Seisyllwg to Hywel. Hywel quickly merged Seisyllwg and Dyfed into the new kingdom of Deheubarth, which covered most of southwest Wales.[1][7] From this power base, he later went on to unite almost all of Wales.
Notes[edit]
References[edit]
- Davies, John (2007). A History of Wales (Hanes Cymru). Penguin Books. ISBN 978-0-14-028475-1.
- Jones, Basil (1851). "Vestiges of the Gael in Gwynedd". Archaeologia Cambrensis, pp. 1–86. W. Pickering.
- Koch, John T. (2006). Celtic Culture: A Historical Encyclopedia. ABC-CLIO.
- Lloyd, John Edward (1912). A History of Wales from the Earliest Times to the Edwardian Conquest. Longmans, Green, and Co. Retrieved July 7, 2010.
Lloyd history of Wales.