Halpin
Halpin is an Irish surname. It is an Anglicized form of the Gaelic patronymic O'hAilpin, meaning 'descendant of Alpin'. Other Anglicized versions of the surname include Halfpenny and Halpenny, and these variants were often used interchangeably prior to widespread literacy in Ireland. For example, the registers of St Peter's Catholic Church, Drogheda, Louth record the variations Halpin, Halfpenny, and Halpenny used throughout the 18th and 19th centuries for demonstrably related individuals.