Indiana and Indianans : a history of aboriginal and territorial Indiana and the century of statehood
Chicago: American Historical Society, 1919, pg. 2173-5
Clemens Vonnegut... on January 24, 1853 married Miss Catherine Blank, who died April 13, 1904.
They were the parents of four sons, three of whom are still living.
The eldest, Clemens, Jr., born November 19, 1853,...
The second son was Bernard Vonnegut,who was born August 8,
1855, and died in August 1908...
Franklin Vonnegut, the third son of Clemens Vonnegut, was born October 20, 1856...
The fourth son, George Vonnegut, born October 22, 1860, has been connected with his father's business since 1876
except for a period of two years when he was a student in the Seminary of the North American Gymnastic Union, at that time located
at Milwaukee, Wisconsin. For several years he taught gymnastics in the Athenaeum. He married Lillie Goeller, and their three children
are: Erwin, Ralph and Carl. George Vonnegut is an active member and was for several years a director in the Commercial Club,
president and director in the Merchant's Association, is active in other civic organizations and is a member of the Board of Directors
of the North American Gymnastic Union.