Sir John Seymour was an English nobleman and the father of Jane Seymour, the third wife of King Henry VIII. He was born around 1500 and became a prominent figure in the Tudor court. Seymour held various positions, including serving as a Member of Parliament and as a knight of the shire for Somerset. Seymour was known for his loyalty to the crown and his involvement in local governance. He was granted several estates and titles throughout his life, reflecting his status and influence. His family played a significant role in the political landscape of England during the Tudor period.