Courtly or dweller by the court
A modern American invention likely blending the surname Courtney with the popular 'lin' suffix. It suggests a sense of courtly refinement or can be interpreted as a topographical name referring to one who lives near a court or enclosed yard.
Fewer than 5 boys were named Courtlin in 2025.
US births per 5-year period, 1990–present (SSA data).