"Blend of John and Henry"
The name Johnhenry is commonly a male name from the "English" origin.
Johnhenry is a compound given name formed from John and Henry, two names long established in English. The joined spelling points to two given or family names combined into one, rather than a name borrowed from another language. The elements have separate histories: John goes back to Hebrew Yochanan, and Henry to the Germanic name Heimrich. It first appears in United States birth records in 1974.
The pronunciation of Johnhenry is JON-hen-ree.