G. Spencer-Brown

George Spencer-Brown was an English polymath best known as the author of Laws of Form. He described himself as a "mathematician, consulting engineer, psychologist, educational consultant and practitioner, consulting psychotherapist, author, and poet". ^{G. Spencer-Brown, English mathematician, psychologist, and author (d. 2016)}

2 April 1923

Born on the same birth date (2 April 1923): Gloria Henry • Johnny Paton

Born on the same birth day (2 April): Francesco Maria Grimaldi • Jan Tschichold • Katrin Rutschow-Stomporowski • Maria Sibylla Merian • Randy Livingston • Roald Als • Shane Lowry • Zane Lamprey

Born in the same month (April 1923): Avram Davidson • Betty Mae Tiger Jumper • Daniel Hoffman • Dolph Briscoe • Edward Mulhare • Ernest Mandel • Floyd Simmons • Gus Bodnar • Jane Kean • Johnny Paton • Kagamisato Kiyoji • Neville McNamara • Percy Heath • Roberto De Vicenzo • Roger Gaillard (historian) • William Guarnere