The Battle of Bron yr Erw was fought at Clynnog Fawr, Wales, in 1075.
Source: Thomas Jones, The Chronicle of the Princes, 1955, p.29.
Gruffydd ap Cynan fought a battle at Bron yr Erw, near Clynnog, in 1075, which turned out disastrously for him and drove him back as an exile to Ireland, the land of his birth.
The battle is mentioned in J.E.Lloyd, A History of Wales, vol II, 1912, pp.
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