A very popular name, of uncertain derivation. Until the 20th century it was confined mainly to Scotland and Ireland. It is probably of Scandinavian rather than Celtic origin, however: a short form of any of the various compound names derived from Old Norse brand ‘sword’. Its popularity in Gaelic-speaking countries has no doubt been influenced by its similarity to Brendan.
English: 1. habitational name from any of various minor places called Worthy, from Old English worðig, a derivative of worð ‘enclosure’. 2. nickname for a respected member of the community, from Middle English worthy ‘valuable’ (a derivative of worth ‘value’, ‘merit’, Old English weorð).