Donathon, of Latin origin, signifies 'gift from God'. It's a variant spelling of the classic Donald, derived from the Gaelic elements 'domhnall' meaning 'world mighty', and 'donn' signifying 'brown-haired'. The name gained prominence during the Middle Ages and has been popular in various forms throughout history.
"Donathon seems to have had its moment in the sun with five babies named each in 1986 and again in 1990, but then it faded from popularity as no more than one child was named Donathon per year thereafter until 1999 when another five were born. Overall, there were fifteen children named Donathon between 1986 and 1999."