Hi there, Dotty! My name is Mary, and I am also researching these people. I do not have the parents of Mary Roseberry or Caleb Dickerson--I am curious as to where you found that information. My husband is descended from Caleb and Mary's daughter Sarah Dickerson, born in 1809, who married Hiram Staples.
Thanks for your time, and I hope to hear from you soon!