Rooney

Rooney is primarily an Irish surname, derived from the Gaelic 'Ó Ruanaidh', meaning 'descendant of Ruanaidh'. The personal name Ruanaidh itself is thought to come from 'ruanaidh', meaning 'champion' or 'hero', or possibly from 'ruadh', meaning 'red' or 'red-haired'. As a surname, it has a long history in Ireland, particularly in Ulster.

The transition of surnames to first names is a common phenomenon, and Rooney has seen some use as a given name, particularly in English-speaking countries. Its rise in popularity as a first name, especially for girls, can be attributed in part to the American actress Rooney Mara, whose distinctive name brought it into the public consciousness. While still uncommon as a given name, its unique sound and Irish heritage appeal to parents seeking something distinctive.