People started using the Johnson surname after the Norman conquest of 1066. An area near the border of Britain and Scotland was called Johnstown. Many of the people living there assumed variations of this surname. The Johnson people were constantly fighting to defend their lands. Consequently, the earned a reputation as a warring tribe and moved around a lot. They lived in well fortified buildings.
The surname Johnson is a combination of the name Jonh and the suffix son. The English meaning of John is &