Unknown; possibly a modern variant of Dylan or Daylan
Deylin is a contemporary American name with no singular established etymology. It is most likely a creative phonetic variant of the Welsh name Dylan, meaning 'son of the sea', or the English name Daylan, which is often associated with 'day' or 'valley'. Due to its rarity, it is used as a unique, gender-neutral choice.
Less common today
Deylin isn't in the latest US Top 1000. It last peaked at #8,760 in 2020.
US births per 5-year period, 1990–present (SSA data).
