Since the children of James & Cyrina Mobley become children with surname Robbins on the 1870 census, thought I would list it here.
1860 IA, Taylor Co, Nodaway twp Mobley, James C.26 bn IN , Cyrina 27 bn NC , Angelina 4 bn IN , William C. 3 bn MO , Sylvester D. 1 bn IA , George W. 3/12 bn IA
1870 KS, Montgomery Co, Louisburg twp Robbins, Wm56 bn NY , Sarah J.38 bn NC , M. A.14 bn IN (female) , Wm. C. 12 bn MO , S. D. 10 bn IA (male) , Geo. W. 9 bn IA , M. E. 8 bn IA (female) , unnamed female 1/12 bn KS, May 1870 Although Cyrina's name is now Sarah, you can still tell this is the same family group.Female, M. E. 8 bn IA would have also been the daughter of James C. Mobley & Cyrina.The unnamed female of 1 month becomes Oscar (son) on the 1880 KS census.