Of Latin origin.

Occasionally used as a feminine name too.

From the Latin word “rex”, meaning “king”.

Famous male bearers are Rex Harrison, Rex Linn, Rex Lee, Rex Hadnot, Rex Grossman, Rex Goudie, Rex Allen.

Sir Reginald Carey Harrison changed his name to Rex, as a young actor, knowing it means “king” in Latin.

During his successful career he won Tony Awards, Golden Globe and Academy Awards.

In 1989, he was knighted by Queen Elizabeth II.

In the following video Rex Harrison, portraying professor Henry Higgins, he offers speech lessons to Eliza Doolittle, portrayed by Audrey Hepburn, in George Cukor’s film “My Fair Lady”.