Dougal m
Scottish: Anglicized form of the Gaelic name Dubhghall or Dùghall, composed of the elements dubh black, dark + gall stranger. This is said to have been a byname applied to Danes, in contrast to the fairer Norwegians and Icelanders (see FINGAL (SEE Fingal)).
Variants: Dugald, Dugal.
Pet form: Dougie.
First names dictionary. 2012.