Lennox is a Scottish given name of Gaelic origin. It means "elm grove" in Scottish Gaelic. The name Lennox has a long history and was once a Scottish clan name. The earliest known use of the name Lennox as a personal name dates back to the 13th century, when it was borne by a son of Walter Fitzalan, High Steward of Scotland.
The name Lenn
"Lennin experienced peak popularity between 2002 and 2006, with at least 12 births each year during this period. However, it has since seen a decline, with only 5 births recorded in 2021."