Roberts, Ike, h, b Feb 1862, 38 md 14 yrs, b TX, TN, TN " Irene, w b Nov 1868, 31, M 14 yrs, 4 ch, 4 lvg, b TX, GA, AL " Milam, s, b Oct 1868, 13, b TX " Julius, s, b Dec 1887, 12, b TX " Relend, s, b Mch 1890, 10, b TX " Clyde, s, b Mch 1893, 7, b TX [Relend is spelled different on every census]
Ike/Isaac is on every census through 1930, did he die there? Have you obtained a copy of his death certificate? It should show the names of his parents. How about his obituary? You never know what info will pop up in obits.