Maryellyn is of American origin, derived from the combination of "Mary" and "Elizabeth". It was particularly popular during the mid-20th century but has since become less common. The name Maryellyn has a unique, yet timeless quality, with its roots in classic Christian naming traditions while maintaining a distinctive character.
Maryellyn was quite popular as a baby girl name in 1963 with exactly five newborns bearing this unique name that year.