Modern coinage with a French-influenced suffix, possibly related to Earsel or elaboration of Ella.
Erselle is a modern coinage with a French-influenced suffix, possibly related to Earsel or to an elaboration of Ella. That makes it feel like part of the modern naming habit of taking a known root and dressing it in a more ornamental ending. Such names often sound elegant because they balance familiarity with fresh shape.
The French-like ending gives Erselle a smooth, polished quality, and that helps it feel feminine and somewhat refined. It may not have a long historical lineage, but it participates in a very modern aesthetic: names that are distinctive in spelling yet easy to say once encountered. Erselle feels delicate without being fragile, and unusual without being difficult.
Its appeal lies in atmosphere more than strict etymology. It sounds like a name designed to be graceful, with a lightly elaborated style that feels contemporary and self-aware.