The Marquis
A modern American creation combining the prefix 'De-' with the French noble title 'Marquis'. It signifies a rank of nobility between a count and a duke, originally referring to a lord of the borderlands.
Less common today
Demarquis isn't in the latest US Top 1000. It last peaked at #2,672 in 1990.
Professional football linebacker
US births per 5-year period, 1990βpresent (SSA data).