I have done a little research on that family. I am exploring (but have not proven) that my 2g grandfather (John Sharp b 1805 NY State) is from the Dutch and/or Palatine communities of Columbia or Greene County. Currently it appears he was the second named "John Sharp" of Johannes Scherp and Bata VanAlen (their first son, John Sharp, died in infancy and is buried in Ernestown, Bath, Ontario, Canada - this is the line that is poplulary followed back to Andries Hans Scherp, the Swedish soldier (1640-1720) who was on a ship bound for New Sweden that landed in New Amsterdam - where he and a number of the passengers preferred to remain over the wilderness of New Sweden. I won't list everything I've got on this family - they are well represented in pubic family genealogies. However, I have found it difficult to separate the Palatine origins from the Dutch. I have 3 Andrews Scherp/Sharp's in that family line.
I've also traced back the Sharp Patine line - wel. documented by D. A .Sharpe of Texas, and goes back to Otto Scherp in Laubenheim. That family settled with other Palatine Germans in England, and then on to Livingston (Germantown), where Jacob Scherp settled. They freely intermarried with Dutch and English over the years. no wonder you are having difficulty.
Since I cannot confirm this line, I've also followed my grandparents' (from Michigan) anecdotal story that the "family line"descends from an Andrew Sharp,
That led me to your post. Our family tradition (no proof here!), is his father came from Scotland, his son was James, who moved to Pennsylvania as part of the Mercer County or Pittsburg Sharps. There is an Andrew in both of those lines. But I can't find my 2g grandfather among either of them. There is also the Andrew from the Clackmannanshire, Scotland - they settled in New Jersey,
Sorry I can't be of more help. WikiTree is new to me, and I apologize if this post (my first) is inappropriate.