Our gggrandfather has the same name ...I know he's not your relative...but he is Rev. John W. Rucks, born in Limrick, AL 1875. I had a hard time finding his family on the census. I looked through a ton of census and the only one missing was 1880 and it had all the brother and sisters on it. Without it I couldn't est. the siblings. I finally found it under the spelling Roucks. Also they had his first name and middle name reversed.
Try some weird spellings and you might run across it. Good Luck!