Ethelbert

This name is rare in itself and notable people with it are even rarer. However, this was the name of Ethelbert Woodbridge Nevin, an American pianist and composer. He wrote a few campaign songs, most notably one for James K. Polk's candidacy. He died in 1901.

A sort-of famous bearer of this name is the central character in the British children's cartoon Ethelbert the Tiger, who is an Indian tiger.