Hello, I am also researching my great great grandparents., john A Calhoun and Louisa. They had four children prior to her death. My great grandfather was Charles Wallace Calhoun. I found he had three sisters. Mattie, Clarissa and Alice. He married three more times and John A Calhoun Jr. was born during the third marriage to Rebecca van Alstyne. I found a Louisa Lula Bailey on some documents, but havn't verified yet if this is my great great grandmother.