Johnathon is of American origin, derived from the Hebrew name "Jonathan". It means "gift of God" and was popularized due to its biblical reference, as Jonathan was King Saul's son in the Old Testament. In modern times, Johnathon has been used less frequently than its variant spellings like Jonathan or Jonathon. People with this name often go by nicknames such as Jonny or Johnny. It is generally considered a strong and somewhat traditional name.
"Johnathon was a popular baby name from the early to mid-1980s, with a peak of 7 births per year in both 1983 and 1986, but it has since declined in popularity, with only 5 births each in 1989, 1997, and 2004. Overall, there were 52 babies named Johnathon between 1982 and 2004."