Claire Johnston died in 1987.
Velda Johnston died in 1997.
Neil Johnston died on 1978-09-28.
Claire did not die "as seen in season 6 episode 6"
Henry Halcro Johnston died on 1939-10-18.
Alexander F. I. Forbes died in 1959.
Claire Johnston was born in 1940.
C.W. Johnston died in 1949.
Johnston Lykins died in 1876.
Johnston Drummond died in 1845.
Edgar Johnston died in 1988.
Christopher Johnston died in 1914.
Lawrence Johnston died in 1958.
Denis Johnston died in 1984.
Duncan Johnston died in 1931.
Wayne A. Johnston died in 1967.
Henrietta Johnston died in 1729.
Velda Johnston died in 1997.