Phinneaus is of Irish origin, derived from the Gaelic 'Fionnbharr', which means 'fair'. It is a unique and uncommon name, often pronounced as 'Finneas' in modern times. The name Phinneaus has been popular among families with Irish ancestry who wish to honor their heritage while giving their child a distinctive moniker.
Phinneaus is not a common name, with only six births recorded in total and all of them occurring in 2007.