Likely a modern blend of Mary and Lynn
Milyn is a contemporary American creation, most likely formed by combining the classic prefix 'Mi-' (from Mary or Mildred) with the popular suffix '-lyn' (meaning lake or waterfall). It follows the trend of melodic, invented names that feel familiar yet remain rare. Because of its modern construction, it does not have a singular ancient etymology.
Less common today
Milyn isn't in the latest US Top 1000. It last peaked at #5,287 in 2014.
US births per 5-year period, 1990–present (SSA data).
