The letter was co-sponsored by Lady Maud Darwin, wife of Sir George Darwin, and Florence Ada Keynes. He co-signed with his wife Susanna, a letter to the Cambridge Independent Press published 16 October 1908, encouraging women to put themselves forward as candidates for the up-and-coming Cambridge town council elections. Venn was a prominent supporter of votes for women. He is also listed as a vice president of the Cambridge Provident Medical Institution. Venn was president of the Cambridge Antiquarian Society in 1908–1909. Newspaper archives show that Venn was a very active member of local civic society in Cambridge, and a committee member of the Cambridge Charitable Organisations Society, later elected vice-chairman in December 1884. Charity work and a civic presence in the town of Cambridge In that same year, Venn was elected a Fellow of the Royal Society, and in 1884, he was awarded a Sc.D. In 1883, he resigned from the clergy, having concluded that Anglicanism was incompatible with his philosophical beliefs. His son entered the mathematics field as well.
In 1868, he married Susanna Carnegie Edmonstone with whom he had one son, John Archibald Venn.
Of course the device was not new then, but it was so obviously representative of the way in which any one, who approached the subject from the mathematical side, would attempt to visualise propositions, that it was forced upon me almost at once. I now first hit upon the diagrammatical device of representing propositions by inclusive and exclusive circles. I began at once somewhat more steady work on the subjects and books which I should have to lecture on. The bowl cricket ball machine that Venn built actually bowled out the top ranked player of the team four times consecutively. The machine was so fascinating that when Australian cricketers were visiting Cambridge, the machines were used to entertain their arrival. A certain machine was meant to bowl cricket balls. These duties led to his developing the diagram which would eventually bear his name. In 1862, he returned to Cambridge as a lecturer in moral science, studying and teaching logic and probability theory, and, beginning around 1869, giving intercollegiate lectures. He followed his family vocation and became an Anglican priest, ordained in 1859, serving first at the church in Cheshunt, Hertfordshire, and later in Mortlake, Surrey. In 1903 he was elected President of the College, a post he held until his death. In 1857, he obtained his degree in mathematics and became a fellow. He moved on to Islington Proprietary School and in October 1853, he went to Gonville and Caius College, Cambridge. He began his education in London joining Sir Roger Cholmeley's School, now known as Highgate School, with his brother Henry in September 1846. His grandfather was pastor to William Wilberforce of the abolitionist movement, in Clapham. His father Henry had played a significant part in the Evangelical movement and he was also the secretary of the ‘Society for Missions to Africa and the East’, establishing eight bishoprics overseas. Venn was brought up in a very strict atmosphere at home. Venn was descended from a long line of church evangelicals, including his grandfather John Venn. His mother died when he was three years old. Henry Venn, who was the rector of the parish of Drypool. John Venn was born on 4 August 1834 in Kingston upon Hull, Yorkshire, to Martha Sykes and Rev. 2 Charity work and a civic presence in the town of Cambridge.
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