Rourke is a masculine name of Irish Gaelic origin, derived from the surname Ó Ruairc (O'Rourke), meaning 'descendant of Ruarc.' The personal name Ruarc is thought to mean 'champion' or possibly 'famous ruler.' As a first name, Rourke carries a strong, distinctive sound with its single syllable and memorable 'rk' ending. While traditionally used as a surname, its transition to a given name reflects the trend of adopting family names as first names. Rourke gained some recognition through actor Mickey Rourke but remains uncommon as a first name. It appeals to parents seeking a name with Celtic heritage that sounds masculine and distinctive without being difficult to pronounce. The name projects strength and character while maintaining its Irish cultural connections.

Brantley is one of several English surnames that was new to the tops in 2009. A possible-probable inspiration is the country rock singer Brantley Gilbert.