The Medieval War Forgotten from History

A strange and unknown story exists within the history of Wales: an Irish king in Wales, Serygei, and his defeat by the Welsh king Cadwallon on Ynys Mon (Anglesey).
This video will trace the story across 1,500 of myths, legends, and rumours.

Chapters:
0:00 - Britain's Irish King
1:14 - Cadwallon
4:08 - Caergybi
6:15 - The 1700s
10:30 - The 1800s
14:14 - The 1900s
18:53 - The Irishman’s Monuments
21:37 - Ynys Môn
24:02 - Serygei | Sirigi
26:36 - Maelgwn

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Sources (turn on subtitles):

Secondary:
Bartrum, P.C. (1993). A Welsh Classical Dictionary: People in History and Legend up to about A.D. 1000. The National Library of Wales.
[1] p.90,
[2] 94,
[3] 181,
[4] 500,
[5] 671.

Bromwich, R. (2014). Trioedd Ynys Prydein. 4th ed. University of Wales Press.
[6] p.lviii,
[7] 176,
[8] 177,
[9] 177-178,
[10] 499.

Charles-Edwards, T.M. (2013). Wales and the Britons, 350-1064. Oxford: OUP
[11] p.154,
[12] 155,
[13] 156-157.

Davies, J. (2007). A History of Wales. London: Penguin.
[14] p.50-51,
[15] 88.

Maund, K. (2006). The Welsh Kings. 3rd ed. The History Press Ltd.
[16] p.28,
[17] 29-30,
[18] 30-33.

National Library of Wales.
[19] A History of Wales: from the earliest times to the Edwardian conquest.

RCAHMW (2007). Coflein. https://coflein.gov.uk/en/
[20] Eglwys-y-Gwyddelod, Cairn Circle.

Schofield, P.J. (2009). Coflein.
[21] Afon Trinant, Longhouse.

Vousden, N. (2012). Coflein.
[22] Eglwys y Gwyddelod, Former Church Site, Llanegryn.

Wiles, J. (2002). Coflein.
[23] Crugyn Gwyddel Cairn
[24] Tomen-y-Gwyddel

Wiles, J. (2004). Coflein.
[25] Muriau’r Gwyddelod, Settlement Complex.

Wiles, J. (2007). Coflein.
[26] Cytiau’r Gwyddelod, Holyhead Mountain Settlement Complex, South-West Area.
[27] Cytiau’r Gwyddelod - Settlement Features on Ynys Leurad.
[28] Din Sylwy or Bwrdd Arthur.
[29] Porth Dafarch, Cytiau’r Gwyddelod: Settlement and Burial Complex.
[30] Ty Mawr Hut Group;Cytiau’r Gwyddelod: Holyhead Mountain Settlement Complex, North-East Area.

Williams, E.W. (2017). A reconsideration of the ‘Celtic sources’ of early British History. National Library of Wales Journal, 36(4).
[31] p.605-606.

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Primary:
Baring-Gould, S. (1903). A Book of North Wales. London: Methuen & Co.
[32] p.24-26,
[33] 34,
[34] 52-53.

Baring-Gould, S. and Fisher, J. (1913). The Lives of the British Saints - Vol. IV. London: The Honourable Society of the Cymmrodorion.
[35] p.196-197.

Barnwell, E.L. (1874). Eglwys y Gwyddel. Archaeologia Cambrensis, 5(19).
[36] p.241.

Jones, J. (1824). The History of Wales. London: J. Williams.
[37] p.305

Lloyd, J.E. (1912). A History of Wales from the Earliest Times to the Edwardian Conquest. London: Longmans, Green, and Co.
[38] p.120.

Llwyd, A. (1833). A History of the Island of Mona, or Anglesey. Ruthin: R. Jones.
[39] p.52,
[40] 204-205.

Moran, P.F. (1879). Irish Saints in Great Britain. Dublin: M.H. Gill & Son.
[41] p.21-22.

Owen, N. (1775). A History of the Island of Anglesey. London: J. Dodsley.
[42] p.31-33,
[43] 34.

Rees, R. (1836). An Essay on the Welsh Saints or the Primitive Christians. London: Longman, Rees, Orme, Brown, Green.
[44] p.165-166,
[45] 266.

Ritson, J. (1824). Annals of the Caledonians, Picts, and Scots; and of Strathclyde, Cumberland, Galloway, and Murray. Edinburgh: W. and D. Liang.
[46] p.261-262.

Williams, J. (1844). The Ecclesiastical Antiquities of the Cymry . London: Richards, Printer, St. Martins.
[47] p.121-122.

Williams, R. (1852). Enwogion Cymru. Llandovery: William Rees.
[48] p.69,
[49] 88.

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Music courtesy of the YouTube Audio Library:
Babylon - Disco Ultralounge by Kevin MacLeod is licensed under a Creative Commons Attribution 4.0 licence. https://creativecommons.org/licenses/...
Source: http://incompetech.com/music/royalty-...
Artist: http://incompetech.com/

Ancient - Density & Time

Beginnings (Intro) - The Tower of Light

Absolutely Nothing - Jeremy Blake

Traversing - Godmode

Atlantis, Namaste are by Audionautix licensed under a Creative Commons Attribution 4.0 licence. https://creativecommons.org/licenses/...
Artist: http://audionautix.com/

On the Island - Godmode

Cloud Wheels, Castle Builder - Puddle of Infinity

Lands Unknown - Futuremono

Fortress Europe - Dan Bodan

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Images of, and from:
'Din Dryfol. A view westwards.', Eric Jones, CC BY-SA 2.0, via Wikimedia Commons
'Eglwys y Bedd, Holyhead', Phil Williams, CC BY-SA 2.0, via Wikimedia Commons
'The southern scarp of Bwrdd Arthur', Eric Jones, CC BY-SA 2.0, via Wikimedia Commons
'Hut circle, Holyhead Mountain', Colin Park, CC BY-SA 2.0, via Wikimedia Commons
https://creativecommons.org/licenses/...
'Cytiau Celtaidd', Monsyn, CC BY-SA 4.0, via Wikimedia Commons
https://creativecommons.org/licenses/...

all other images are public domain, via the National Library of Wales, the Digital Commonwealth, the Cleveland Museum of Art, the Yale Center for British Art, and the British Library.