Bitter or star of the sea, combined with grace.
A compound name merging Molly, a medieval diminutive of Mary, with Ann. It carries the dual heritage of the Hebrew 'bitter' or 'star of the sea' and the Hebrew 'grace' or 'favor'.
Less common today
Mollyann isn't in the latest US Top 1000. It last peaked at #9,729 in 2013.
US births per 5-year period, 1990βpresent (SSA data).