The day after Anne's execution in 1536 Henry became engaged to Seymour, who was one of the Queen's ladies-in-waiting.[77] They were married 10 days later. Henry granted his assent to the Laws in Wales Act 1535, which legally annexed Wales, uniting England and Wales into one unified nation. This was followed by the Second Succession Act (Act of Succession 1536), which declared Henry's children by Queen Jane to be next in the line of succession and declared both the Lady Mary and the Lady Elizabeth illegitimate, thus excluding them from the throne. The king was granted the power to further determine the line of succession in his will, should he have no further issue.[78] On 12 October 1537, Jane gave birth to a son, Prince Edward, the future Edward VI.[79] The birth was difficult and the queen died on 24 October 1537 from an infection and was buried in Windsor.[80] Measures were immediately put in place to find another wife for Henry, which, at the insistence of Cromwell and the court, were focused on the Continent.[81] After Jane's death, the entire court mourned with Henry for an extended period. Henry considered Jane to be his "true" wife, being the only one who had given him the male heir that he so desperately sought. He was buried next to her.