Lady Jane Seymour for the tomb of Margaret of Valois, queen of Navarre and also an author, which was published in 1550. Lady Jane Seymour Lady Jane Seymour (c.1541 – 19 March 1561) was an influential writer during the sixteenth century in England, along with her sisters, Lady Margaret Seymour and Anne Seymour, Countess of Warwick. Their brother was Edward Seymour, 1st Earl of Hertford. They were the children of Edward Seymour, 1st Duke of Somerset, who from 1547 was the Lord Protector of England after the death of King Henry VIII and during the minority of Jane's first cousin, King Edward VI.
Duke of Somerset The only subsidiary title of the Duke of Somerset is Baron Seymour, which is used as a courtesy title by the eldest son and heir of the Duke. This courtesy title is the lowest in rank of all heirs to Dukedoms in the peerages of the British Isles, yet a Lord Seymour's precedence is higher than his title suggests, by virtue of the seniority of the Dukedom of Somerset (the only more senior non-royal duke is the Duke of Norfolk). Several other titles have been held by the Dukes of Somerset, but have become extinct. These include: Earl of Kendal