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.
Johnston Lykins died in 1876.
Johnston Drummond died in 1845.
Percy Johnston died in 1993.
Allen Johnston died in 2002.
Denis Johnston died in 1984.
Russell Johnston died in 2008.
C.W. Johnston died in 1949.
Edgar Johnston died in 1988.
Lawrence Johnston died in 1958.
Henrietta Johnston died in 1729.
Alva Johnston died in 1950.