Lerin is of Scandinavian origin, derived from the Old Norse elements 'lær' meaning 'teaching' and 'mann' meaning 'man'. It was popularized during the Viking Age but has since become less common. Lerin means 'teacher' or 'instruction man', suggesting wisdom and guidance. The name has a strong, assertive sound, often associated with confidence and leadership. Despite its Scandinavian roots, Lerin can be used in various cultures due to its universal appeal.
The name Lerin peaked in popularity during the early 1980s with a high of 35 births in 1980 and remained relatively consistent over the next two years before declining significantly from 1984 onwards, reaching its lowest point at 5 births in 1996.