Strange as it may now seem, the venerable St. Arnold was a Greek by birth, a musician who became a member of the court of Charlemagne. The name is said to have been introduced into Britain by the Normans in the form Arnaud. From The Terminator, Arnold Schwarzenegger, to the Nickelodeon series Hey Arnold, Arnold has become a cool household name across the globe. Arnold is also a baby boy name of German origin and is commonly associated with the less popular Old English name Earnweald. Meaning “eagle power,” baby Arnold has nothing to worry about when it comes to evil cyborgs or elementary kids.