Charles, I think I may have found some information on Captomles/Capitola Van Buren alias Catherine Elizabeth Smitherman who married James Thomas Fitts. Have you looked at the 1870 US Bibb Co., AL. census? Look in the household of Henry Oliver Fitz/Fitts and wife Ella Patterson Fitz/Fitts. There is a FRANCIS VAN BUREN age 23 [b. ca 1847]. Then look at the 1910 US Chilton CO., AL. Census in the household of Jasper Smitherman you will find Rebecca Van age 62 [b. ca 1848]. In 1920 US Chilton Co., AL. census still in the household of Jasper Smitherman there is Rebecca Vann age 77. There is no death certificate for Rebecca Vann, on her death certificate she is listed as Rebecca Van Buren and the informant on the death certificate was Jasper Smitherman.
Email me back directly at my new email address. I have some additional Fitts information along with some questions.