Charles Seymour, 6th Duke of Somerset the pride of birth and rank amounted almost to a disease". Charles was the second son of Charles Seymour, 2nd Baron Seymour of Trowbridge (died 1665), of Marlborough Castle in Wiltshire, by his wife Elizabeth Alington (1635–1692). The 2nd baron was (in a junior line) a great-great-grandson of Edward Seymour, 1st Duke of Somerset (executed 1552), brother of Queen Jane Seymour, uncle of King Edward VI and Lord Protector of England. Charles was educated at Harrow School and Trinity College, Cambridge, where his portrait by Nathaniel Dance-Holland survives in the College's collection. In 1675, Charles's elder brother Francis Seymour, 5th
Thomas Seymour, 1st Baron Seymour of Sudeley of the king, lavish gifts and titles. Thomas became 1st Baron Seymour of Sudeley. Edward became Edward Seymour, 1st Duke of Somerset, and is often, therefore, referred to as "Somerset." In addition, Thomas saw his brother rise, in the contentious and dangerous politics of the English Reformation, to the position of chief councilor with an approved title of "Protector" regent, referred to unofficially as Lord Protector of England, in effect, ruler of the realm as Regent for his nephew, the king. Thomas, unsurprisingly, began to resent his brother and the relationship between them began to dissolve. Although Thomas was named