Son of Kaylin or a modern invented blend
Mckaylin is a modern American invention, likely created by combining the Scottish/Irish prefix 'Mc' (meaning son of) with the popular name Kaylin. While it follows the trend of using surnames as feminine first names, it functions primarily as a stylistic blend of sounds.
Less common today
Mckaylin isn't in the latest US Top 1000. It last peaked at #12,434 in 2004.
US births per 5-year period, 1990–present (SSA data).
