Idwal is Welsh for "lord of the wall". As a masculine given name, it may refer to the following people:

Middle Ages

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Ordered chronologically
  • Idwal Iwrch (reigned c. 655–682), King of Gwynedd
  • Idwal or Ithel ap Morgan, 8th century King of Gwent and Glywysing
  • Idwal Foel (died c. 942), King of Gwynedd
  • Idwal ab Idwal, better known as Ieuaf (ruled 950–969), joint king of Gwynedd (with his father Idwal Foel) and possibly Powys
  • Idwal ap Meurig (died 997), King of Gwynedd

Modern world

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Ordered alphabetically