Combination name, likely from Dale and the suffix -on.
Daleon is a modern American invention, most likely created by blending the English surname Dale, meaning 'valley,' with the popular 'on' or 'leon' suffix. It follows the contemporary trend of creating unique rhythmic names by adding melodic endings to established roots. Because it is a modern coinage, it does not have a singular historical etymology.
Less common today
Daleon isn't in the latest US Top 1000. It last peaked at #6,166 in 2003.
US births per 5-year period, 1990βpresent (SSA data).