Maybe I should say the Crail boys' parents. This has been my most infuriating brick wall. Sylvester, John and Aaron were the sons of James B. and Mary Ann [Jones] Crail. The Crails were in Shelby Co., IN in 1851 and 1854, buying and then selling two town lots in Marietta. Mary shows up in Indy in 1876 as a widow. She lives out her life residing most years with son John.
The two eldest were born in Hamilton [town or county?] Ohio; Aaron in Marion, Ohio. They may have had a brother, George, born in Miami Co., IN.
Marriage? Residence in 1840, 1850, 1860, 1870? James' year and place of death? I have no idea beyond their sons' births. The boys can be tracked from their marriage during the 1850s until their deaths.
Total mystery and frustration! That makes them favorites.