Modern invented feminization possibly derived from Harlan, an Old English place name meaning hare land.
Harline is a modern invented feminization possibly derived from Harlan, an Old English place name meaning hare land. That makes it part of the larger tradition of turning surnames and place names into given names, then adjusting them to feel more overtly feminine.
Harline adds a soft ending to a rooted, historically English base. The name feels smooth and understated, with enough familiarity to be accessible but enough rarity to stand out. It has the quiet confidence of a name that does not need much ornament to make its point. Harline therefore suggests old landscape roots translated into a more modern and graceful personal name.