Of relatively recent origin and uncertain etymology. It is first recorded in the 19th century. It may be a shortened form of Belinda, an adoption of Spanish linda ‘pretty’, or a Latinate derivative of any of various other Germanic female names ending in -lind meaning ‘weak, tender, soft’. It was popular in the 20th century, especially in the 1950s.
Irish: reduced Anglicized form of Gaelic Ó hEidirsceóil ‘descendant of the messenger’, from eidirsceól ‘go-between’, ‘intermediary’, ‘news bearer’ (a compound of eidir ‘between’ + scéal ‘story’, ‘news’). Bearers of this Irish surname claim descent from a single 10th-century ancestor.