Gracious
Shanyn is a modern creative spelling of Shannon. It originates from the name of the longest river in Ireland, the River Shannon, which is associated with the Celtic goddess Sionann. In modern usage, it is often interpreted as a variant of Jane or Joan, meaning 'God is gracious'.
Less common today
Shanyn isn't in the latest US Top 1000. It last peaked at #5,792 in 1993.
American actress and musician
US births per 5-year period, 1990βpresent (SSA data).