<Tr> <Th> Region of origin </Th> <Td> Scotland, Ireland, England </Td> </Tr> <Tr> <Th> Meaning </Th> <Td> "little rock", "harmony" and "handsome" </Td> </Tr> <P> Allen is a Celtic surname, originating in Scotland, and common in Ireland, Wales and England . It is a variation of the surname MacAllen and may be derived from two separate sources: Ailin, in Scottish and Irish Gaelic, means both "little rock" and "harmony", or it may also be derived from the Celtic Aluinn, which means "handsome". Variant spellings include Alan, Allan, etc . The noble family of this surname, from which a branch went to Portugal, is descended of one Alanus de Buckenhall . </P> <P> In Ireland, Allen is the Anglicization of the Gaelic name Ó h - Ailín . Allen is the 41st most common surname in England . </P>

Where does the last name allen derive from