In bed, a few hours after being shot by the actor John Wilkes Booth at Ford's Theatre, Washington DC.
If you're asking whether it was a conspiracy, there are whole websites devoted to the subject.
Fred Lincoln died on 1940-01-14.
Hugh Lincoln Cooper died in 1937.
No- Lincoln died in the morning of the Saturday before Easter.
Typhoid Fever.
1809-1865
Yes
Lincoln Borglum died in 1986.
Frances Lincoln died in 2001.
Lincoln Ragsdale died in 1995.
Lincoln Walsh died in 1971.
Lincoln Hurst died in 2008.
Lincoln Dixon died in 1932.
Mordecai Lincoln died in 1830.
Lincoln MacVeagh died in 1972.
Lincoln Fitzell died in 1958.
Lincoln Gordon died in 2009.
Charley Lincoln died in 1963.