Where it comes from
Aodhán, diminutive of Aodh (an old Irish fire-god name)
Also known as
Aodhan (the original Irish Gaelic form), Aidan (alternate English spelling)
Fun Fact
An Anglicized spelling of the Irish name Aodhán, itself a diminutive of Aodh, an old Irish fire-god name. Its rapid rise in American popularity in the 2000s led to a wave of sound-alike names like Kaden and Braden.