Scharp is a
German surname, the Low
German equivalent of the normal
German names Scharf or Scharpf. All of them have the same derivation as the English surname Sharp or Sharpe, "sharp, cutting, quick-witted." Scharpe is probably either a variation of the
German name, or a respelling of the English surname Sharpe by someone who was influenced by
German spelling in their note-taking.
This information is from a combination of
Hans Bahlow's
Dictionary of German Names and Reaney &
Wilson's
A Dictionary of English Surnames.