Ruggles was born in Essex around 1737, and died at Spains Hall, Essex on 17 November 1813. He studied at the Middle Temple, and was called to the bar around 1760. He inherited Spains Hall through a cousin in 1776, and thereafter lived the life of a country gentleman. He was a justice of the peace and deputy lieutenant of Suffolk and Essex, and served for some years as an overseer of the poor, though exactly where is not indicated. He continued to take an interest in the law and especially the training of lawyers, and his book The Barrister (1792) discusses the proper methods of training for the bar. He married Jane Anne Freeland of Cobham, Surrey, and the couple had six children. The prison reformer Sir Evelyn Ruggles-Brise (1857–1935) was their descendant.
From The Biographical Dictionary of British Economists in Oxford Reference.