George first married Susanna Faust. Born ca 1772 in Moghentongo Township Northumberland County, Pennsylvania. Susanna died in Moghentongo Township Northumberland County, Pennsylvania ca 1806.
It is said that George Grubaugh’s first wife was Susanna Faust, daughter of Jacob & Catherine Faust. Sources for that information seem to be lacking.
(There was a Jacob Faust, son of Philip Faust and Matelina Albright, who was born on 25 Dec 1757, and died 27 Jul 1834, buried at Zions Red Church Cemetery, Orwigsburg, Schuylkill County, Pennsylvania. That Jacob Faust married Elisabeth Kieffer, b. 3 Jun 1761, d. 20 May 1841. That’s not this Jacob Faust.
Also, there was a Johann Jacob Fast (also spelled Faust), who married Catherine Rudicell. He died in 1827 in Berne, Fairfield County, Ohio, but there was no mention of a deceased daugher Susannah or her chidlren in his will. Jacob Fast and his wife Catherine were buried in Fast Cemetery, Bremen, Ohio.)