viscount (n.) Look up viscount at Dictionary.com
late 14c., "deputy of a count or earl," from Anglo-French and Old French visconte (Modern French vicomte), from Medieval Latin vicecomes (genitive vicecomitis), from Late Latin vice- "deputy" (see vice-) + Latin comes "member of an imperial court, nobleman" (see count (n.1)). As a rank in British peerage, first recorded 1440. Related: Viscountess.