surname, from 13c. Scottish Dofnald, Dufenald, probably from Gaelic Domhnall, Old Irish Domnall (pronounced "Dovnall"), from Proto-Celtic *Dubno-valos "world-mighty, ruler of the world," from *walos "ruler" (from PIE root *wal- "to be strong") + Old Irish domun "world," from PIE root *dheub- "deep, hollow," via sense development from "bottom" to "foundation" to "earth" to "world" (see deep (adj.)). A top 10 name for boys born in the U.S. between 1923 and 1943. Disney's Donald Duck cartoon character debuted in 1934.

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