1870 U.S. Census, Essex County, Virginia [transcribed by William I. Brooks]:
Dwelling 396, Family 396
Brooks, Beverly, 56, male, white, farmer, $500 real estate, $275 personal estate, unable to read or write, eligible to vote
Brooks, Lucy Ann, 56, female, white, keeping house, unable to read or write
Brooks, George, 21, male, white, farm laborer, unable to read or write
Brooks, Lucinda P., 19, female, white, without occupation, unable to read or write
Brooks, Susan M., 16, female, white, without occupation
Brooks, Amanda, 15, female, white, without occupation
Brooks, Alexander, 13, male, white, farm laborer, unable to read or write
Brooks, Henry E., 10 male, white, farm laborer, unable to read or write
Hill David, 15, male, black, farm laborer, unable to read or write

On 14 October 1938 in Central District, Essex County, Virginia, Alexander O. Brooks died. He was a resident of Dunbrooke; male; white; married; wife was Betty Brooks; born 7 May 1856; age 82; occupation farmer; born in Essex County; father was Beverly Brooks, who was born in Essex County; mother was Lucy Ann Brooks, who was born in Essex County; informant was Stanley L. Brooks of Alexandria, Virginia; burial at Antioch Church on 15 October 1938; attended by physician from 13 to 14 October; died at 5:30 p.m.; cause of death paralysis of both sides with hypertension. [Commonwealth of Virginia, Certificate of Death 23185.]