Most Senior Fan

Just as with Most Senior SF Writer, we can ask who is the most senior fan at various times. This could be eldest in age or eldest in years in fandom. (Note that we're using fan in the fannish sense of being involved in fandom, and not in the mundane sense of liking sf — there is no hope of knowing who liked sf at any given time.)

Birth Date Found Fandom Died or Gafiated Years in Fandom Fan
1880s 1970 Pat Terry
Aug 20, 1890 late 20s early 30s Mar 15, 1937 ~10? H. P. Lovecraft
Nov 12, 1899 <1930 g. 1930 a few? Warren Fitzgerald
1912? <1930 Jan 2, 1963 >35 Julius Unger
1915 <1930 Feb 8, 2004 >74 Julius Schwartz
1908 <1930 d. 1971 <40 Allen Glasser
Jun 20, 1910 <1930 Oct 29, 2003 >73 Lloyd Arthur Eshbach
January 22, 1916 1929 September 25, 1984 ~ 50 Dan McPhail
1912 <October 1930 1979 >49 Walter Gillings
1912 1930-32 1997 ~66 Conrad H. Ruppert
Nov 23, 1914 <1933 Oct 6, 2006 ~70 Bob Tucker
1905 mid-30s d. Feb 29, 1978 <45 Eric Frank Russell
?? mid-30s June 28, 1978 ~45 J. Michael Rosenblum
Apr 5, 1917 1935 Sept 23, 1994 ~59 Robert Bloch
1913 <1935 1994 ~60 Will Sykora
1919 <1936 2000 >64 Oliver Saari
1920 1935 June 28, 2008 ~73 Jack Speer
Jun 14, 1921 v. late 30s Gafiated? ~50 William L. Hamling
Oct 1, 1914 <1936 Nov 2, 1990 ~55 Don Wollheim
Feb 17, 1919 1936? Dec 23, 2015 >79 Jack Robins
May 1916 late 30s g. ~1950; d. Oct 22, 2016 ?? Norman F. Stanley
Sept 16, 1917 <1940 Apr 17, 2015 >75 Art Widner
Nov 26, 1919 <1939 Sept 2, 2013 >74 Fred Pohl
Nov 24, 1916 <1939 Dec 4, 2008 >69 Forrest J Ackerman
Feb 14, 1919 1933 or '34 September 18, 2016 >82 Dave Kyle
1920 1935 or 36 still active >80 Bob Madle
Oct 29, 1923 < 1939 still active >76 Erle Korshak

N.b., to keep this list from growing without limit, please do not list people who entered fandom after 1950 or who were born after 1935. The idea is to celebrate especially long fannish careers.