Donald Keyhoe died on 1988-11-29.
Donald Keyhoe was born on 1897-06-20.
no they did not die
Donald McGibney died in 1956.
Donald Ford died in 1991.
Donald Brenner died in 2011.
Donald Carroll died in 2010.
Donald Maxwell died in 1936.
Donald Tovey died in 1940.
Donald A. Swan died in 1981.
Donald McMullen died in 1967.
Donald Macmaster died in 1922.
Donald Deacon died in 2003.