 In 1547 Seymour became the fourth husband of Catherine Parr, who had been the sixth and last wife and queen of Henry VIII.During his marriage to Catherine Parr, Seymour involved the future Queen Elizabeth I (then 14 years old), who resided in his household, in flirtatious and possibly sexual behaviour.Thomas Seymour was the son of Sir John Seymour and Margaret Wentworth.