The name Oneil is a variant of the more common name O'Neil, which is of Irish origin. The correct meaning of the name Oneil is 'descendant of Neil. 'The name has evolved over time, influenced by cultural and linguistic changes. The name Oneil has seen fluctuations in popularity, peaking in 2007, but has significantly declined in popularity, being ranked 9474 in 2023. Oneil 'simplicity and unique spelling make it stand out, reflecting its enduring appeal.
