Clement Mansfield Ingleby was born in Edgbaston, Warwickshire on 29 October 1823 and died in Ilford, Essex on 26 September 1886. The son of a Birmingham solicitor, he was educated at home because of ill-health. In 1843 he entered Trinity College, Cambridge, graduating BA in 1847, MA in 1850 and LL.D. in 1859. He worked in his father's legal practice (1849–59), becoming a partner, but he lacked dedication to the law, spending much leisure time studying mathematics, metaphysics and Shakespeare. He married Sarah Oakes in 1850. He was an active member of a Birmingham literary society, and also held the Chair of Logic for a time at the Birmingham Midland Institute. In 1856 he published a short textbook, Outlines of Theoretical Logic, based on the work of Sir William Hamilton on syllogisms. Ingleby acknowledged his indebtedness to other writers in this work.
From The Continuum Encyclopedia of British Philosophy in Oxford Reference.