I have letters that mention Uncle William Davey. I have been unable to connect him to the family. The closet I have done is he was possibly another son of John/Mary Oppie because Dr. John and his wife mentioned him in their letters. William died 1856. He had worked at the Consols Mine. I also have letters from a Cousin Elizabeth Davey...possibly his daughter, he may have been married to a Mary. Still trying to piece things together. There are Aunt Mary, another Aunt Mary, Cousin Mary, Cousin Elizabeth, sister Elizabeth...it gets confusing. Also there was (I believe) a brother to Robert's father John, named Robert who had a son William (of course). I just keep looking and trying to put things together.