Maxwell

From a Scottish surname meaning "Mack's stream", from the name Mack, a short form of the Scandinavian name Magnus, combined with Old English wille "well, stream". A famous bearer of the surname was James Maxwell (1831-1879), a Scottish physicist who studied gases and electromagnetism.

As a given name it has increased in popularity starting from the 1980s, likely because it is viewed as a full form of Max [1].