Antiquary. Son of the County Durham lawyer and mathematician John Brockett (1764–1827) and Frances Sophia (c. 1770–1833). In 1814 he married Isabella (d. 1865), eldest daughter of the merchant John Bell. Brockett practised law in Newcastle and also cultivated his interests in numismatics, antiquities and philology. He was a member of the Newcastle Literary and Philosophical Society and a founder member of the Society of Antiquaries of Newcastle Upon Tyne. He was also elected a Fellow of the Society of Antiquaries of London. Brockett’s publications included a Glossary of North Country Words, in Use: with Their Etymology, and Affinity to Other Languages; and Occasional Notices of Local Customs and Popular Superstitions (1825). He sent a presentation copy of this work to Southey.