Of the sea or bitter
A modern American creation likely formed by combining the popular prefix 'De-' with the name Marion. While its specific roots are contemporary, it draws from the Latin 'marinus' meaning 'of the sea' or the Hebrew 'maryam' meaning 'bitter'.
Less common today
Demarion isn't in the latest US Top 1000. It last peaked at #670 in 2005.
College football player
US births per 5-year period, 1990βpresent (SSA data).