Lennard vs. Leonard — What's the Difference?

Lennard may refer to:

Leonard or Leo is a common English, German, Irish, and Dutch masculine given name and a surname. The given name and surname originate from the Old High German Leonhard containing the prefix levon ("lion") from the Greek Λέων ("lion") through the Latin Leo, and the suffix hardu ("brave" or "hardy").

United States writer of thrillers (born in 1925)