The title Earl of Bridgewater was created secondly in 1617 for John Egerton, Baron Ellesmere and Viscount Brackley, after the town of Bridgwater in Somerset, where he owned estates. The Egerton family descended from Sir Richard Egerton of Ridley, Cheshire, whose illegitimate son Sir Thomas Egerton was a prominent lawyer who served as Master of the Rolls from 1594 to 1603, as Lord Keeper of the Great Seal from 1593 to 1603 and as Lord High Chancellor of England from 1603 to 1617. Thomas Egerton was knighted in 1594, admitted to the Privy Council in 1596 and in 1603 he was raised to the Peerage of England as Baron Ellesmere, in the County of Shropshire, and in 1616 to Viscount Brackley. In 1598 he had inherited the Tatton estate in Cheshire from his brother-in-law Richard Brereton. He was succeeded by his son, John who represented Callington and Shropshire in the House of Commons and served as Lord-Lieutenant of several counties in Wales and western England and who in 1617 was made Earl of Bridgewater in the Peerage of England.