If I have my Cato family figured out, Sarah E. was the grand-daughter of Allen and Martha Mary [unknown] Cato, through her parents Alexander and Rebecca [Crosby] Cato.Allen had a son named Alexander, born about 1825.Allen was listed on the 1830 Monroe Co. Alabama Census 1m 5-10 [Alexander], 1m 30-40 [Allen], 1f 20-30 [Martha Louisa] near brother Claiborne, brother-in-law John D. Roach, and father William.
I have no proof that Allen's son Alexander was the Alexander Cato in Mobile, but he was the only Alexander Cato in Alabama, and was not very far away from Monroe Co.
I am descended from Allen's daughter Martha Louisa, who married Thomas Allen Winn.
Alexander Cato was listed in Mobile Co. Alabama in 1850 [p469, h 441, 7 Nov], and Mobile in 1860 [p155, h 209, 1 Jul].An Alexander Cato was a Private in the 4th Alabama Reserves, Capt. Toomer's Co., for local defense and special service.Alexander Cato, as Alex Cato was listed on the Mobile, Mobile Co. 1870 Census [p 318, h 412]. He and his son , William, were working in a Rail Road Shop, as was an Alexander Williamson who was living with them. Rebecca was illiterate, but Mary, Milton, and Frances had attended school that year.Alexander was not listed on an Alabama Census in 1880, but his wife and family were [Vol 17, ED 116, sheet 4, line 1].Son William was in a seperate household [Vol 17, ED 116, sheet 3, line 35].
I have more Cato information if you are interested.