1850 U.S. Census, Essex County, Virginia
Page 87
Dwelling 381, Household 381
Dunn, Richard, 50, male, merchant, value of real estate $2,300, born in
Virginia
Dunn, Peggy, 51, female, born in Virginia
Dunn, Iverson, 20, male, laborer, born in Virginia
Dunn, Richard, 18, male, clerk in store, born in Virginia
Dunn, Muscoe, 16, male, salesman, born in Virginia

Iverson L. Dunn was mentioned in the 1851 will of his father Richard D. Dunn. He was to receive a one-fifth equal share in the estate was was named an executor along with Tazewell Dunn. When the will was proved, Tazewell declined to be an executor, and Iverson was granted a certificate of probate. [Essex County, Virginia, Will Book 27, pages 114–115.]

1880 U.S. Census, King and Queen County, Virginia
Supervisor’s District 1, Enumeration District 39, page 25 [496]
Dwelling 197, Family 202
Dunn, Iverson L., white, male, 50, married, farmer, born in Virginia, both parents born in Virginia
Dunn, Lucy C., white, female, 46, married, keep house, unemployed for 8 months previous year, sick with dropsy, born in Virginia, both parents born in Virginia
Dunn, Walter L., white, male, 18, son, single, farm laborer, unemployed for 8 months previous year, sick with heart disease, born in Virginia, both parents born in Virginia
Dunn, Nettie, white, female, 17, daughter, single, at home, born in Virginia, both parents born in Virginia
Dunn, Emmett, white, male, 13, son, single, at home, born in Virginia, both parents born in Virginia
Lowden[?], Minus[?], black, male, 14, servant, single, born in Virginia, both parents born in Virginia