Could this be them ? Eligiah Owens & Elisha Owens, born abt 1866 ? So far this is the only twins I see.
Sons of Hilliard Owens Birth: 1825 in Claiborne County, Tennessee Death: 1895 in Letcher County, Kentucky
United States Census 1880 for Hillard Owens
Name: Hillard Owens Residence: District 4, Claiborne, Tennessee Birthdate: 1823 Birthplace: North Carolina, United States Spouse's Name: Jane Owens Spouse's Birthplace: Tennessee, United States Father's Name: Father's Birthplace: North Carolina, United States Mother's Name: Mother's Birthplace: North Carolina, United States Race or Color (Expanded): White Ethnicity (Standardized): American Gender: Male Martial Status: Married Age (Expanded): 57 years Occupation: Laborer Household Gender Age Hillard Owens M 57 Spouse Jane Owens F 47 Child James Owens M 23 Child William Owens M 20 Child Margrate Owens F 18 Child Eligiah Owens M 14 Child Elisha Owens M 14 Child Jerimiah Owens M 12 Child Robert Owens M 10 Child Jane Owens F 7