Name:47, v. 2, p. 732-733. From History of Porter County, Indiana, 1912, biographical sketch of father Levi F. Bay, "He is the father of four children: L. Clyde, a graduate of Wheeler high school, a student in Valparaiso University, and a teacher in Portage township; Mona M., a student in the Wheeler high school; and Levi F. Jr. and Sada M., both students in the district school."

1906 Birth:2666 Birth year of 1906 estimated based on age (4 years) in 1910 census enumeration; birth place of Indiana taken from same source.

1910 U.S. Census:2666 Margaret enumerated in the household of her parents Levi and Margaret Bay in Portage Township, Porter County, Indiana as a daughter, female, white, 4, single, born in Indiana, father born in Indiana, mother born in Iowa, can speak English. Siblings Clyde, age 18; Maud, age 15; and Frank, age 7, also resided in the household.

1920 U.S. Census:1822 Margaret enumerated in the household of her parents Levi and Maggie Bay in Gary, Lake County, Indiana as a daughter, female, white, 14, single, attended school within the year, born in Indiana, father born in Indiana, mother born in Iowa, can speak English. Siblings Maude, age 25, and Frank, age 17, also resided in the household. A lodger, W. H. McCord, age 25, also resided in the household.