Ellowyn is a modern spelling of Elowen, a Cornish name that means "elm tree" and was revived in Cornwall in the 20th century. The -wyn ending borrows from Welsh names like Bronwyn, and the opening Ell- links it to Ella and Eloise, which explains its appeal to American parents looking for something fresh but familiar. Ellowyn has risen from number 4170 in 2015 to number 1470 in 2025, its best US rank so far, though it has not yet reached the top 1000.