Not related! Are you certain there are descendants of John Floyd
Berry and Pearl
Fountain Cook? The census indicate the couple only had two sons: John Floyd
Berry (1 Aug 1899 - 24 Aug 1969) and Clifton
Montgomery Berry (24 Jan 1902 - 12 Feb 1965). John, a rancher, died in
Callahan County. His wife Thelma was the certificate's informant. Clifton, a pharmacist, died in
Haskell County. His wife Mildred was the informant. There are no births listed on the registry for either couple. Perhaps you can obtain their obits which might reveal additional info on the families?