Of the sea; drop of the sea
Marelly is a modern elaboration of the name Mary or Maria, often influenced by the Latin 'mare' meaning sea. It likely developed as a creative variant of names like Marella or Mariel, combining traditional roots with a contemporary suffix.
Less common today
Marelly isn't in the latest US Top 1000. It last peaked at #4,446 in 2008.
US births per 5-year period, 1990βpresent (SSA data).