I don't know if this will help, but maybe someone has the 1870 census and look them up for you. You also said you didn't know if the children where related, they are both listed as stepchildren to Benjamin Mercer, so maybe they had just gotten married. <A HREF="http://www.rootsweb.com/~kywarren/index.html">Warren County Kentucky Genealogy</A> they do have the 1860 census index maybe that would help find Abina, and Benjamin then. Teddy 1880 LDS Census Place: Green Castle, Warren, Kentucky Source: FHL Film 1254444 National Archives Film T9-0444 Page 196C Relation Sex Marr Race Age Birthplace Benjamin MERCER Self M M W 32 KY Farmer Fa: KY Mo: KY Abina MERCER Wife F M W 27 KY Keeping House Fa: KY Mo: KY Antha HAZEL SDau F S W 5 KY Fa: KY Mo: KY George HAZEL SSon M S W 22 KY Cooper Fa: KY Mo: KY Name: Turner, Rubin Year: 1870 County: WARREN CO. State: KY Page: 193 Location: GREEN CASTLE PCT. Name: Turner, Sarah Year: 1870 County: WARREN CO. State: KY Page: 201 Location: GREEN CASTLE PCT. Census Place: Green Castle, Warren, Kentucky Source: FHL Film 1254444 National Archives Film T9-0444 Page 183B Relation Sex Marr Race Age Birthplace Mark TURNER Self M M W 43 KY Farmer Fa: KY Mo: KY Susan TURNER Wife F M W 41 KY Keeping House Fa: KY Mo: KY Reuben TURNER Son M S W 21 KY Laborer Fa: KY Mo: KY Martha A. TURNER Dau F S W 17 KY Fa: KY Mo: KY Mark A. TURNER Son M W 14 KY Laborer Fa: KY Mo: KY Nancy J. TURNER Dau F S W 11 KY At Home Fa: KY Mo: KY Susan J. TURNER Dau F S W 9 KY Fa: KY Mo: KY William TURNER Son M S W 7 KY Fa: KY Mo: KY James T. TURNER Son M S W 2 KY Fa: KY Mo: KY Reuben TURNER Father M W W 88 KY Fa: KY Mo: KY Fielding TURNER Brother M M W 58 KY Laborer Fa: KY Mo: KY Juda TURNER SisterL F M W 56 KY Washing Fa: KY Mo: KY William HENDERSON GSon M S W 5 KY Fa: KY Mo: KY Mary HENDERSON GDau F S W 3 KY Fa: KY Mo: KY Census Place: Green Castle, Warren, Kentucky Source: FHL Film 1254444 National Archives Film T9-0444 Page 184C Relation Sex Marr Race Age Birthplace Mariah ISBELL Self F S W 55 KY Keeping House Fa: KY Mo: KY Manerva TURNER Sister F W W 64 KY At Home Fa: KY Mo: KY Census Place: Green Castle, Warren, Kentucky Source: FHL Film 1254444 National Archives Film T9-0444 Page 183B Relation Sex Marr Race Age Birthplace Sarah TURNER Self F W W 56 KY Keeping House Fa: KY Mo: KY Emily F. TURNER Dau F S W 13 KY Fa: KY Mo: KY Census Place: Bristow, Warren, Kentucky Source: FHL Film 1254445 National Archives Film T9-0445 Page 212A Relation Sex Marr Race Age Birthplace Wm. J. TURNER Self M M W 37 KY Farm Laborer Fa: KY Mo: KY Melinda TURNER Wife F M W 37 KY Farm Laborer Fa: VA Mo: VA Mahala E. TURNER Dau F S W 16 KY Fa: KY Mo: KY Permelia J. TURNER Dau F S W 12 KY Fa: KY Mo: KY Thos. J. TURNER Son M S W 9 KY Fa: KY Mo: KY Jas. A. TURNER Son M S W 6 KY Fa: KY Mo: KY Rousseau M. TURNER Son M S W 4 KY Fa: KY Mo: KY Martha S. TURNER Dau F S W 2 KY Fa: KY Mo: KY Census Place: Woodburn, Warren, Kentucky Source: FHL Film 1254445 National Archives Film T9-0445 Page 286A Relation Sex Marr Race Age Birthplace John H. TURNER Self M M W 28 TN Farmer Fa: TN Mo: KY Caroline TURNER Wife F M W 33 KY Keeping House Fa: KY Mo: KY Charles TURNER Son M S W 8 TN Fa: TN Mo: KY Clarence B. TURNER Son M S W 4 KY Fa: TN Mo: KY Lola TURNER Dau F S W 1 KY Fa: TN Mo: KY Census Place: Bowling Green, Warren, Kentucky Source: FHL Film 1254444 National Archives Film T9-0444 Page 11B Relation Sex Marr Race Age Birthplace Wm. TURNER Self M M W 31 KY Druggist Fa: KY Mo: KY Mildred S. TURNER Wife F M W 29 KY Keeps House Fa: KY Mo: KY Nannie TURNER Dau F S W 4 KY At Home Fa: KY Mo: KY Willis TURNER Son M S W 3 KY At Home Fa: KY Mo: KY Emma FOSTER Other F S W 22 KY Cook Fa: KY Mo: KY Census Place: District 229, Warren, Kentucky Source: FHL Film 1254444 National Archives Film T9-0444 Page 85C Relation Sex Marr Race Age Birthplace Frank TURNER Self M M W 27 KY Laborer Fa: KY Mo: KY Lizzie TURNER Wife F M W 28 TN Keep House Fa: TN Mo: TN Census Place: Green Castle, Warren, Kentucky Source: FHL Film 1254444 National Archives Film T9-0444 Page 184C Relation Sex Marr Race Age Birthplace Henry J. TURNER Self M M W 25 KY Farmer Fa: KY Mo: KY Harriet TURNER Wife F M W 26 KY Keeping House Fa: KY Mo: KY Mary B. TURNER Dau F S W 4 KY Fa: KY Mo: KY Mattie J. TURNER Dau F S W 3 KY Fa: KY Mo: KY Adda F. TURNER Dau F S W 1 KY Fa: KY Mo: KY List Mom for the Grayson Co. KY, Fulkerson, Vertrees, and the Ford List