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The name Aedan is commonly a male name from the "Celtic" origin.
Aedan is an anglicized spelling of the Irish name Aodhán, formed from the Old Irish word áed, meaning fire, with the diminutive suffix -án. Irish sources record bearers of the name from the early medieval period, including Áedán of Ferns, a sixth-century bishop. The spelling Aedan drops the diacritics and uses a single n, and it sits alongside Aidan and Aiden as one of several anglicized forms of the same name.
Aodhán means "Fire".
The pronunciation of Aedan is AY-dun.