When However is being used as a transitional phrase, preceding it with a comma is a mistake. It is called a run-on sentence. On occasion, it might be appropriate to precede however with a semicolon. I don't like cake; however, I love scones.
Johnson is a name of ancient Norman origin. It arrived in England with the Norman Conquest of 1066. Johnson is a name that comes from the given name John and the name literally means son of John.. The given name John is derived from the Hebrew name Johanan, which means Jehovah has favored.
Origins of the Jones suname were derived from the first name of John (or Jon) (1) through a naming convention called patronymics. In fact, many surnames can also be traced back to the given name of John. Examples of this include the surnames of Johnson, Johansen, and many others.