Thomas Wilburt Grubaugh was born in 1800 to Michael Grubaugh (the patriarch of the Grubaugh name) and Peggy ??. Thomas was born in Pennsylvania, but the family moved to Jefferson County, OH when he was about 5 and then onto Richland County, OH where Thomas spent most of his life. Thomas married Margaret Ann Cunningham in about 1840. Although he was 40 years old when he married, he still managed to have 10 children. Several of the children died during or shortly after birth. The children are: Electa Ann Grubaugh Hissong (1841-1934), Samuel A. Grubaugh (1843-1843), Andrew Parr Grubaugh (1846-1928), Reuben Elias Grubaugh (1847-1936), Elizabeth S. Grubaugh (1849-1849), James Cunningham Grubaugh (1850-1925), John Ramsey Grubaugh (1953-1924), Mary J. Grubaugh (1855-1855), Christena Catherine Grubaugh Dobberstein (1859-1938), and Sarah Grubaugh Crow (1861-1924).

Family folklore has it that Thomas Wilburt Grubaugh is the famous "Indian Grubaugh". Provided by Mike Oswald, the story goes as follows:
Not long ago, we found an old picture in a relative's old photo box with a tale written on the back about this person being captured by the Mohican Indians. He was supposedly taken by the indians when he was only about 8 years old, while playing with a friend. The friend was killed, and they made Grubaugh run the gauntlet - where Indians warriors arrange themselves in two parallel lines and the person runs in the path between them while they strike him. Because he did it so bravely, they let him live and they adopted him into the tribe. He lived with the indians for almost 10 years, when, at age 18, he was able to escape and find his way home. The picture has no first name - just the Grubaugh surname and the tale - he is identified as the "Indian Grubaugh". The person in the photo appears to be about 70-80 years old, and the photo I would guess dates from 1870-1890. Mike says that this was supposedly a direct anscestor of his, and the only Grubaugh fitting the dates above would be Thomas Grubaugh, born Sept 1800.
I've attached a copy of the "Indian Grubaugh" photo to this memorial.

Note: I've linked Thomas Wilburt Grubaugh as a son of Michael Grubaugh and his wife Peggy. I realize that the current memorial for Peggy lists her as dying in 1798, before Thomas was born, but I believe she more likely died sometime between 1806 and 1810. I also believe she was born quite a bit later than 1747.