Hannon is of Irish origin, derived from the ancient Irish name 'O'hAnuinn', which translates to 'descendant of Anu'. Anu was a mother goddess and one of the three primary goddesses in Celtic mythology, along with Danu and Brid. The name Hannon is less common today but has historical significance, particularly among Irish families tracing their lineage back through generations.
Hannon is not a common name based on these statistics, with only 52 instances over the course of a century (1915-2023). The name's popularity seems to have peaked briefly in the late 1910s and early 2010s, each decade seeing five births. However, there was also a notable spike recently, with eight births recorded in 2016 alone.