Have you tried the "Luzerne Legal Register"? It is available among others through Google books. These are books which have been digitized and made online free of charge.
They give histories of many families who settled in our valley before the massacre, fled and then returned after the war.
If you give me a surname I can check and give you the exact link to follow to get into these books.
Thy also cover early legal land cases.

Sharleen