Cortlen is of American origin, derived from Old French 'Courtel'. It means 'little court' or 'short in stature'. The name gained popularity during the mid-20th century and has maintained a steady presence since then.
Cortlen saw a spike in popularity in 2006 with 11 births that year, but it has generally been quite rare throughout the rest of the years tracked, with 5 or 6 births per year.