Census records vary as to where Ira was born.

1850 census of Morgan Co., Ky, enumerated 6 Sep, lists on p. 102 as family #661:
Ira Isom, 39, farmer, b. Va; Scina, 38, b. N.C.; Sarah, 15; Argalus, 14; Nelson, 12; Emily, 10; John, 8; Ira, 7; Martin, 4; David, 1. All children born in Kentucky.

1860 census of Morgan Co., Ky, district 1, West Liberty P.O., enumerated 16 July, lists on p. 67 as family #409/45:
Ira Isom, 49, farmer, b. Ky; Scina, 47, b. N.C.; Nelson, 21; John, 17; Ira, 15; Martin, 13; David, 11; Doctor, 5. All sons born in Kentucky.

1870 census of Elliott Co., Ky, precinct 1, Sandy Hook P.O., enumerated 23 June, lists on p. 32 as family #191:
Ison, Ira, 62, farmer, b. Va; Sina, 57, b. Va; Martin, 23, b. Va, farm hand; David, 21, b. Va, farm hand; Doctor, 14, b. Ky.

1880 census of Elliott Co., Ky, Newcomb precinct, enumerated 15 June, lists on p. 15 as family #117/119:
Ison, Ira, 70, farmer, b. Ky Va Va; Lousina, 68, wife, b. N.C. N.C. N.C..

They are sharing a dwelling with their son Doctor F., who has his own family number at #117/120.