Frank C. Clifford is not mentioned in the provided text about the surname Levinson.
The provided text details the etymology of the surname Levinson, meaning "son of Levi" in Ashkenazi Jewish tradition. It then lists numerous notable individuals who share this surname, spanning various professions and nationalities. The list includes figures from arts and entertainment, academia, business, law, science, and other fields. The text also briefly touches upon variations of the surname, such as Levinsohn and Lewinsohn, and lists notable individuals associated with those names. The purpose of the extract is to provide a comprehensive overview of prominent people named Levinson and related surnames.