Michael, I am descended from Johann Jacob Robb also and have info on most of his children; your Harriet being an exception.I knew she was born 2-13-1826 (from the Johann Jacob Bible)and was married to Levi Smith and lived in Indiana.In 1952 Hattie, wife of Grant Robb (Williams County, Ohio), met some of the Smiths at the funeral of Louis Beuret in Auburn. Let me know if you are interested in any of this info. I believe Johann Jacob's grandfather, Peter Raab, was the son of Michael Raub, son of Phillip Raub (Loyal Judith arr 1732) I think the Raab came from a mis-reading of "au" in German script as "aa" . . .an easy mistake to make.