Anglicized form of Gaelic Domhnall. The final -d of the Anglicized form derives partly from misinterpretation by English speakers of the Gaelic pronunciation, and partly from association with Germanic-origin names such as Ronald. This name is strongly associated with clan Macdonald, the clan of the medieval Lords of the Isles, but is now also widely used by families with no Scottish connections.
English: 1. occupational name for a locksmith, from an agent derivative of Middle English, Old English loc ‘lock’, ‘fastening’ (see Lock). 2. topographic name for someone who lived by a lock or enclosure, from a derivative of Middle English loke (see Lock 2). 3. variant of Luker.