Source 1: 1840 Waterville, Lucas, Ohio census for father Joel Burnham;
Source 2: 1850 Waterville, Lucas, Ohio Census for father Joel Burnham; This census names son Charles;
Source 3; 1860 Waterville Lucas Ohio Census for Father Joel Burnham: This census lists son Charles age 29;
Source 4: Film: 912939: Marriage Records: Lucas Co. Ohio;