Dùghall (Scottish Gaelic) comes from Scottish Gaelic Dùbh, from Old Irish dub, from Proto-Celtic dubus, from Proto-Indo-European dʰewbʰ-, from Proto-Indo-European dʰewh₂- — smoke; mist, haze.
Ancestry of “Dùghall”, step by step
Dùghall traces back through 3 separate lines of ancestry.