Llywelyn ap Seisyll, King of Gwynedd and of Deheubarth^[1]

- 1023

• Name	Llywelyn ap Seisyll
  Suffix	King of Gwynedd and of Deheubarth
  Gender	Male
  Acceded	1018
  	King of Gwynedd
  	Llywelyn won control of Gwynedd in 1018 when he defeated Aeddan ap Blegywryd in battle, killing him and his four sons.
  Acceded	1022
  	King of Deheubarth
  	He later gained control of Deheubarth, defeating Rhain , an Irish pretender who claimed to be the son of Maredudd ab Owain , at Abergwili in 1022.
  Death	1023
  Notes	Acceded: 1018 http://www.hull.ac.uk/php/cssbct/cgi-bin/gedlkup.php/n=royal?royal01930
  Person ID	I6043	Glenn Cook Family
  Last Modified	19 Jun 2013

  
  

  Father	Siesyll   d. Yes, date unknown
  Family ID	F2038	Group Sheet  |  Family Chart

  
  

  Family	Angharad Ferch Maredudd, Queen of Powys   d. Yes, date unknown
  Children	1. Gruffydd ap Llywelyn, King of Deheubarth, King of the Britons,   b. Abt 1007   d. 1063 (Age ~ 56 years)
  Family ID	F2044	Group Sheet  |  Family Chart
  Last Modified	19 Jun 2013

  
  

• Sources

  [S36] Brian Tompsett, Dept of Computer Science, University of Hull, England(B.C.Tompsett@dcs.hull.ac.uk), Directory of Royal Genealogical Data, (This work is Copyright b 1994-2002 Brian C Tompsett).