My other response dealt with Robert's family.I thought I'd go back and see what I can find on Rosey B. MCCOY.
There's a death record for Rosa Lee JUSTICE in 1943 in Pikeville, Pike Co, KY.Father: Eperson MCCOY. Mother:Emily SMITH.Spouse:Robert Lee JUSTICE.
The only Epperson MCCOY I can find that's a possible match is in Wayne, Buchanan Co, MO in 1870.He's 26. wife Emma is 19 and son William is 5m.Both Epperson and Emma were born in KY.They are living next door to another MCCOY family:Sarah, 41, Walter, 21, Albert, 19, Arminda, 18, Larkin, 17, Compton, 16, Lafayette, 14, Lucy, 12, Anderson, 8, Phoebe, 3, Ralph, 2, and Lorenzo, 19, all born in KY.
The 1880 census for Pond Creek, Pike Co, KY has this family: BUNTY, James age 19 b. KY, both parent b. VA wife Emly age 27 b. KY, both parents b. KY stepdau MCCOY, Dollie age 7 b. KY stepdau MCCOY, Rosa age 5 b. KY stepson MCCOY, Johnie age 3 b. KY
There's a user submitted lineage for Epperson MCCOY at www.familysearch.org