Fine man or joyful person
Derived from the Germanic elements 'fayn' meaning glad or joyful, and 'man'. It is most commonly recognized as a surname, famously borne by physicist Richard Feynman, and has recently transitioned into use as a distinctive given name.
Less common today
Feynman isn't in the latest US Top 1000. It last peaked at #4,889 in 2015.
Nobel Prize-winning theoretical physicist known for quantum mechanics
US births per 5-year period, 1990βpresent (SSA data).