Lothario comes from Germanic Lothar-type roots meaning famous army, later popularized in literary use.
Lothario comes from Germanic Lothar-type roots meaning famous army, but it became much more familiar through literary use. Over time, the name gathered a second life in literature as a type for a romantic seducer, which has strongly colored its modern feel.
That literary association is so powerful that many people encounter the word more as a character type than as a personal name. Lothario feels dramatic, historical, and unmistakably charged. It has the grandeur of a medieval name, but also the shadow of its literary reputation, which makes it one of the more unusual names in modern memory.
As a given name, it would be rare and highly distinctive, perhaps chosen for its sound and classical weight more than for its connotations. The name’s history makes it fascinating: noble in origin, notorious in later use.