Sir John Cust, 3rd Baronet
- See also John Cust, 1st Earl Brownlow.
Cust was the eldest son of Sir Richard Cust, 2nd Baronet, and Anne Brownlow, daughter of Sir William Brownlow, 4th Baronet. He was educated at Eton and Corpus Christi College, Cambridge and studied law at the Middle Temple, where he was called to the bar in 1742.
He was elected to the House of Commons for Grantham in 1743, seat he would continue to represent until his death 27 years later. In 1761 he was appointed Speaker of the House of Commons, which he remained until shortly before his death in 1770. He was admitted to the Privy Council in 1762.
Cust married Etheldred Payne, daughter of Thomas Payne, in 1743 and with her had 2 sons and 2 daughters. In 1754 his mother inherited Belton House near Grantham, Lincolnshire from her brother, John Brownlow, 1st Viscount Tyrconnel.
- Dictionary of National Biography. London: Smith, Elder & Co. 1885–1900. .
- "Cust, John (CST735J)". A Cambridge Alumni Database. University of Cambridge.
|Parliament of Great Britain|
| Member of Parliament for Grantham
With: Lord George Manners
Lord George Manners
| Speaker of the House of Commons
|Baronetage of England|