Louis Sullivan died in the Warner Hotel, 3301 S. Cottage Grove, Chicago, on Aril 14, 1924. See: Louis Sullivan: Prophet of Modern Architecture by Hugh Morrison.
See also: Jazz Age Chicago: Hotel Index at: chicago.urban.history
I would like to add, that I presume the Warner Hotel no longer exists, but I think it is interesting to note that this hotel was located across Cottage Grove Avenue from where the Civil War Confederate prisoner of war Camp Douglas once stood.
Also, several of the infamous Chicago Black Sox stayed at the Warner Hotel, and it is where on September 29, 1919 they negotiated a payment of $80,000 from gamblers to lose the 1919 World Series with the Cincinnati Reds.
Claude Sullivan died in 1967.
Matt Sullivan died in 1937.
Claude McLin died in 1995.
Claude Auclair died in 1990.
Claude Fournier died in 1825.
Claude Bertin died in 1705.
Claude Sullivan was born in 1925.
Lou Sullivan died in 1991.
Leonor Sullivan died in 1988.
Dewey Sullivan died in 2006.
Liam Sullivan died in 1998.
Yankee Sullivan died in 1856.
Donal Sullivan died in 1907.
Herbert Sullivan died in 1928.
Alan Sullivan died in 1947.
John Sullivan died in 1795.
Malachy Sullivan died in 1967.
Matthew Sullivan died in 1948.