AodhÁN

From the old Irish name Áedán, a diminutive of Áed (see AODH). This was the name of an Irish monk and saint of the 7th century. It was also borne by several characters in Irish mythology.

AODH   male   Irish, Scottish, Irish Mythology
From the old Irish name Áed, which meant "fire". This was a very popular name in early Ireland, being borne by numerous figures in Irish mythology and several high kings. It has been traditionally Anglicized as Hugh.
FULL FORMS
IRISH MYTHOLOGY: Áed, Aodh
IRISH: Aodh
SCOTTISH: Aodh
EQUIVALENTS
ANCIENT IRISH: Áed, Áedán, Áedh
ENGLISH: Aden, Aidan, Aiden, Aydan, Ayden
IRISH MYTHOLOGY: Áedán, Aodhán
IRISH: Aidan, Aodhán, Edan
SCOTTISH: Aidan, Aodhán, Edan
DIMINUTIVES AND SHORT FORMS
IRISH: Aodhagán
SCOTTISH: Aodhagán, Iagan
OTHER FORMS
ENGLISH: Keegan, Kegan
IRISH: Keegan