Celtic meaning "Brandon's son," "son of the raven," and "sword." Common modern Irish last name. Popularized in America by the character Tom Branson, husband of Lady Sybil on popular PBS-aired show Downton Abbey.
a modern anglicized variation of the Irish masculine name Cian which comes from the Gaelic meaning “ancient, enduring”. Cian was borne by the son-in-law of the early century High King of Ireland Brian Boru.