Marlus is of Latin origin, meaning 'dedicated to Mars'. It is derived from the Roman family name Marlius, which was patronymic in form, indicating descent from a father named Marsus. The name Marsus itself means 'warlike' or 'relating to Mars', the Roman god of war. Marlus is rare today but was once quite common in ancient Rome.
"Marlus experienced a gap in popularity during those years, with no births recorded between 1930 and 1941."