Holly (name) – Wikipedia

Hollis is an English surname derived from a Middle English holis ” [dwelling by] holly trees”; it was also used as a masculine given name. Holly (variants Hollie, Holley) was first used as a feminine given name in the 20th century, as a “botanical” name given to girls, in reference to, or at least secondarily associated with, the holly tree.

https://en.wikipedia.org/wiki/Holly_(name)