Some descendants of Thomas Johnson Rampley assumed his middle name was his mother's maiden name. While sometimes middle names that are "last names" are the maiden name of the mother, that is not always the case, the last name could have come from a neighbor, another family member, or a famous person. I'm not certain where it came from in Thomas' case. Middle names that are last names may also be a patronymic name, one based upon the father's first name as in the case of Anke Hinrichs Fecht whose father was Hinrich Fecht. Middle names that are "last names" can be clues to research--but don't take a "clue" and make it a "fact" without something with which to back it up.