Rex Graham [né Knowling] (1915-58), botanist; son of Harold Knowling and Elsie Graham; Henson's godson.

Journal references: 9

• 16 Aug 1914
• 4 Aug 1915
• 15 Oct 1915
• 4 Jun 1917
• 26 Jun 1919
• 13 Feb 1920
• 31 Jan 1921
• 22 Apr 1925
• 30 Apr 1926

See also Knowling, Marjorie Katrine Esme; Knowling, Harold Wilfred; Graham, Alice Katrine [Elsie]