1918 WWI draft registration: Egbert Rollo Ferguson, 911 Lexington, Cincinnati, Hamilton, Ohio, age 41, born June 19, 1877, Manager, Mutual Life Ins., tall, brown eyes, dark hair, nearest relative, Nellie K. Ferguson, wife (same address).
1920 Census, Cincinnati, Hamilton, Ohio (Ward 13, District 225): Egbert Ferguson and his wife Nellie lived with two children Mary, age 10, and Egbert Jr., age 7 at 911 Lexington Ave. Egbert, age 42 was born in Canada was a manager of an insurance company. Nellie, age 38, was born in Arizona, Mary was born in North Carolina and Egbert Jr. in Ohio. Egbert became a naturalized citizen in 1892.
1930 Census, Lakewood, Cuyahoga, Ohio (District 657): Egbert R., age 52, and Nellie G., age 50, Ferguson lived with their children Mary, age 20, and Bert, age 17, at 12970 Lake Ave. Egbert was a Manager in the Life Insurance industry. Egbert was age 29 and Nellie age 27 when they were married.