In the years 1813-1827 the firm was operated as a partnership between the founder and his two sons, John Deighton the younger (1791-1854) and Joseph Jonathan Deighton (1792-1848), trading as John Deighton & Sons. Following the elder John Deighton's retirement in 1827, the firm traded as J. & J. J. Deighton.Details for: Deighton, John II, Book Trader Index Trader Details, bbti.bodleian.ox.ac.uk. Retrieved 4 March 2023. Beginning in 1848, following Joseph's death, the firm traded as J. Deighton.
