Lennyn is of Welsh origin, meaning "graced with harmony". It is a unisex name that has gained popularity in recent years, particularly in English-speaking countries. Lennyn is often seen as a unique yet accessible alternative to more traditional names like Leonard or Lyndon. The name has four syllables and rhymes with pinnacle, making it distinctive and easy to remember.
The name Lennyn experienced a significant increase in popularity over the years, with a substantial jump from 46 births in 2016 to 72 births in 2021, and peaking at 99 births in 2022 before slightly decreasing to 93 births in 2023.