Just for kicks, I tried an experimental use of ancestry.com's database using information about Adelaide Bilbo, Charles C.'s wife.
Perhaps you'll be interested to know that, in the entire 1910 census, there is only one Adelaide who was born in Missouri in or about 1892, whose father was born in New York and whose mother was born in Illinois.
This Adelaide appears as follows: 1910 census, Missouri, St. Louis 4255 Flad Avenue, Dwelling 155, Family 187 Nellie H. Osberghaus, age 39, Widow, 5 children born, 5 surviving, Born in Illinois, Father born in England, Mother born in England William (son), age 19, Born in Mo., Father born in N.Y., Mother born in Illinois Adelaide (daughter), age 18, Born in Mo., Father born in N.Y., Mother born in Illinois Nellie (daughter), age 16 Charles (son), age 13 Frederick (son), age 11
A search of Missouri's Death Certificates popped up a death certificate for Dr. William Osberghaus, Dentist, b. 17 Aug 1890, St. Louis Mo., d. 21 Apr 1954 Father:William Charles Osberhaus Mother:Nellie Harriet White