John Bridges, the author of The History and Antiquities of Northamptonshire, was born in 1666 at Barton Seagrave, Northamptonshire. He was appointed Solicitor of the Customs in 1695, a Commissioner of the Customs in 1711, and in 1715 a Cashier of the Excise. He was a Bencher of Lincoln's Inn, and a Fellow of the Society of Antiquaries. He died on the 16th of March 1724.
Bridges, who is mentioned with great respect by Hearne and other antiquaries, was, says Dibdin, 'a gentleman, a scholar, and a notorious book-collector.' His library, which consisted of 'above 4000 Books and Manuscripts in all languages and faculties, particularly in Classics and History, and especially the History and Antiquities of Great Britain and Ireland,'[63] was sold at his chambers, No. 6 Lincoln's Inn, by Mr. Cock, on the 7th of February 1726, and twenty-six following days. The number of lots was four thousand three hundred and thirteen, and the total proceeds of the sale were four thousand one hundred and sixty pounds, twelve shillings. The books sold well, and Hearne, in his Diary, under February 15th, 1726, writes: 'My late friend John Bridges esqr.'s books being now selling by auction in London (they began to be sold on Monday the 7th inst.). I hear they go very high, being fair books, in good condition, and most of them finely bound. This afternoon I was told of a gentleman of All Souls' College, I suppose Dr. Clarke, that gave a commission of 8s. for an Homer in 2 vols., a small 8° if not 12°. But it went for six guineas. People are in love with good binding more than good reading.' Humphrey Wanley, who was a buyer at the sale for Lord Oxford's library, was much dissatisfied with the large sums which the books fetched, and suspected there was a conspiracy to run up the prices. He writes in his Diary (February 9, 1725-26): 'Went to Mr. Bridges's chambers, but could not see the three fine MSS. again, the Doctor his brother having locked them up. He openly bid for his own books, merely to enhance their price, and the auction proves to be, what I thought it would become, very knavish'; and on the 11th of February he adds: 'Yesterday at five I met Mr. Noel and tarried long with him; we settled then the whole affair touching his bidding for my Lord [Oxford] at the roguish auction of Mr. Bridges's books. The Reverend Doctor one of the brothers hath already displayed himself so remarkably as to be both hated and despised, and a combination among the booksellers will soon be against him and his brother-in-law, a lawyer. These are men of the keenest avarice, and their very looks (according to what I am told) dart out harping-irons. I have ordered Mr. Noel to drop every article in my Lord's commissions when they shall be hoisted up to too high a price. Yet I desired that my Lord may have the Russian Bible, which I know full well to be a very rare and a very good book.'
A copy of the sale catalogue, with the prices in manuscript, is preserved in the library of the British Museum.
Bridges expended several thousand pounds in making collections for his History of Northamptonshire, which, after many delays, was published under the editorship of the Rev. Peter Whalley in 1791.