Hannon Family History
Hannon Surname Meaning
Irish: Anglicized form of Gaelic Ó hAnnáin ‘descendant of Annán’ a personal name from a shortened diminutive of annadh of uncertain meaning.
Walloon and northern French: from a pet form of the personal name Jehan ‘John’ (see Jean).
Source: Dictionary of American Family Names 2nd edition, 2022
