1850 U.S. Census, Essex County, Virginia
Dwelling 3, Family 3
Newbill, William G., 32, male, farmer, $2,000 real estate, born in Virginia
Newbill, Catharine, 31, female, born in Virginia
Newbill, Hetty, 9, female, born in Virginia, attended school
Newbill, Louisa, 6, female, born in Virginia, attended school
Newbill, Henry, 1, male, born in Virginia
[Cleveers?], James, 16, male, laborer, born in Virginia

On 19 December 1864, James A Dunn and William Newbill were bound $40,000 for James A Dunn’s administration of the estate of James W Dunn. Signed Jas A Dunn, Wim G Newbill. [Essex County, Virginia, Will Book 28, pages 480–481.]

1880 U.S. Census, Essex County, Virginia, Center Cross Voting Precinct
Enumeration District 22, Page 30
Dwelling 279, Family 279
Newbill, William G., white, male, 62, married, farmer, born in Virginia, both parents born in Virginia
Newbill, Catharine F., white, female, 63, wife, married, keeping house, ague & fever, born in Virginia, both parents born in Virginia
Newbill, Logan, white, male, 28, son, widowed, works at saw mill, born in Virginia, both parents born in Virginia
Newbill, Christopher, white, male, 26, son, married, physician, born in Virginia, both parents born in Virginia
Newbill, Nettie, white, female, 18, daughter in law, married, at home, born in Maryland, both parents born in Maryland
Newbill, Charles, white, male, 22, son, single, farmer, born in Virginia, both parents born in Virginia
Washington, Harriet, Black, female, 18, servant, single, domestic servant, born in Virginia, both parents born in Virginia
Tompkins, Mary, Black, female, 11, servant, single, domestic servant, born in Virginia, both parents born in Virginia