On 4 January 1849 he married Eliza (1832–1893), daughter of Henry Archer, a
Clerkenwell butcher and they divided their time between two residences, Burleigh House, at 342 Camden Road, and Oaklands, on the
Isle of Thanet. Financial success allowed him to indulge his passion for
arms and armour, and over thirty years he acquired nearly a thousand items of
militaria. Following the death of his wife on 30 May 1893, he devoted his time to his collection, publishing a lavishly illustrated catalogue in 1894 entitled
Ancient Arms and Armour, collected and described by Edwin J Brett, which formed the basis of the
Christie's catalogue when he sold most of the collection at auction on 18 March 1895 for £11,773. After a long illness Brett died at Burleigh House on 15 December 1895, leaving an estate worth £76,538 to his nine children. The majority of his publishing empire was left to his eldest sons, Edwin Charles and Edgar Percy, who continued to manage its titles until the business collapsed in 1909. Brett was buried in the family vault in
Highgate cemetery on 19 December 1895. ==References==