I am also researching the Adcock family from Robertson/Davidson Co, TN.
I am looking for the family of Elizabeth Adcock, b abt 1817 VA, who married Christian Coleman in Davidson Co in 1834. I found them on the 1850 census of Robertson CO, TN, with children: Joseph, Chapman, James K, Mary Jane, Virginia, and Tennessee. Her brother, Joel Adcock, is also listed in the household.
I had a message from another researcher suggesting that Elizabeth is the d/o Joseph Henry Adcock and his wife Susan Cason. I wonder if your William B. Adcock could be a sister/aunt to my Elizabeth.
If you have any information on Elizabeth Adcock, I would be very interested in whatever you might have. In the same token, if I come across a William B Adcock, I will pass the information a long to you.