1840 Birth:2864 Birth date of January 1840 and birth place of Ohio taken from 1900 census enumeration.

1860 Marriage:2851 Servetus Sillin married Harriet Monroe on 20 December 1860 in Auglaize County, Ohio.

1880 U.S. Census:2863 Harriet Sillin enumerated in the household of her husband Servetus Sillin in Logan Township, Auglaize County, Ohio as a white, female, 38, wife, married, keeping house, born in Ohio, father born in Ohio, mother born in Ohio. Also residing in the household were children Irena W., age 16; Edward B., age 14; Iviry L., age 11; William L., age 8; Iza Estella, age 6; Ina A., age 4; and Ida Amanda, age 1. Lutkiewicz Stanuslous, age 71, also resided in the household as a boarder.

1900 U.S. Census:2864 Harriet Sillin enumerated in the household of her husband Servetus Sillin in North Little Rock, Ward 8, Hill Township, Pulaski County, Arkansas as a wife, white, female, born January 1840, age 57, married 39 years, bore 9 children, 8 still living, born in Ohio, father born in Ohio, mother born in Ohio, can read, can write, can speak English. Others residing in the household were Servetus' sister Amanda as a sister, white, female, born November 1835, single, born in Ohio, father born in Ohio, mother born in Ohio, can read, can write, can speak English; Servetus' daughter Ida as a daughter, white, female, 20, single, born in Ohio, father born in Ohio, mother born in Ohio, can read, can write, can speak English; Servetus' mother -in-law Mary Ritchie as a white, female, 81, widow, born 4 children, 3 still living, born in Ohio, father born in Maryland, mother born in Maryland, can write, can speak English; and Henry Reid as a boarder, white, male, 23, single, born in Arkansas, father born in Tennessee, mother born in Tennessee, laborer, can read, can write, can speak English.