A member of the Gauts tribe
Josslin is a modern spelling variant of Jocelyn. It originates from the Germanic name Gautselin, which referred to the Gauts (a North Germanic tribe), and was later introduced to England by the Normans.
Less common today
Josslin isn't in the latest US Top 1000. It last peaked at #9,517 in 2013.
US births per 5-year period, 1990βpresent (SSA data).