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.
Denis Johnston died in 1984.
Jill Johnston died in 2010.
Ritchie Johnston died in 2001.
Archibald Johnston died in 1663.
Percy Johnston died in 1993.
Glen Johnston died in 1991.
Allen Johnston died in 2002.
Martin Johnston died in 1990.
Russell Johnston died in 2008.
Thomas A. Johnston died in 1934.
Gabriel Johnston died in 1752.