I am also descended from Rosanna Upperman and Charles Tees. I came across your post when I was researching her parents.

I found on the Hoffman side a collection on Ancestry.com call "Catholic Trails West. The Founding Catholic Families of Pennsylvania". It has Sebastian and Cundegunda Hoffman with the following children...

John George b. 6 Apr 1759
Mary Barbara b. 2 Apr 1761
John Valentine b. 8 Mar 1763
Catherine b. 2 Aug 1764
George Ernest b. 12 Aug 1773

Also in this same publication is...
Adam Opperman m. Elizabeth Hoffman 16 Aug 1778 (her parents are listed as Sebastian and Cunegunda Hoffman).

I then searched Adam's name with an Opperman surname and found the he was a Hessian soldier with von Lengerke Battalion and deserted in 1778 while on a march in NJ. He took the Oath of Allegiance in 1782.

I was wondering how you found Cunegunda's maiden name. And I too would like a copy of Elizabeth Hoffman Upperman's will. My email is deborahshinn@aol.com