The fifth
Derived from the Latin name Quintinus, which is a diminutive of Quintus. It was traditionally given to the fifth-born child or a child born in the fifth month.
Less common today
Quintin isn't in the latest US Top 1000. It last peaked at #503 in 1990.
NFL safety
NBA shooting guard
British Lord Chancellor
Scottish crime novelist
US births per 5-year period, 1990βpresent (SSA data).