God will add
Yosselin is a modern Spanish-influenced phonetic spelling of Jocelyn. While Jocelyn has Germanic roots meaning 'a Gaut' (referring to a North Germanic tribe), its phonetic variants in Latin American communities are often associated with the biblical name Joseph, meaning 'God will add'.
Less common today
Yosselin isn't in the latest US Top 1000. It last peaked at #3,516 in 2007.
US births per 5-year period, 1990βpresent (SSA data).