Career
After the Olympics Karl immigrated to (1900) and then became a naturalized citizen (1904) of the United States of America. During this process he changed his name to Charles Ruberl. He continued competitive swimming for the New York Athletic Club and set several American swimming records.
After his swimming career he went into banking, and then helped found Bainbridge, Ryan & Ruberl – a stock brokerage firm trading on the New York Stock Exchange.
He retired before the 1929 stock market crash and lived in New York City until his death in 1966. Karl married Lida Saint George and is survived, as of 10/2007, by four great grandchildren, four grandchildren and a daughter-in-law - all whom reside in the United States.