Donald – Wikipedia

Donald is a Scottish masculine given name. It is derived from the Gaelic name Dòmhnall. [1] This comes from the Proto-Celtic * Dumno-ualos (“world-ruler” or “world-wielder”). [2][3][4] The final – d in Donald is partly derived from a misinterpretation of the Gaelic pronunciation by English speakers. A short form of Donald is Don, and pet forms of Donald include Donnie and Donny. The feminine …

https://en.m.wikipedia.org/wiki/Donald