Original: When King Henry died , the castle became the property of his son , Edward VI of England , who gave it to his uncle , Thomas Seymour who was made Thomas Seymour , 1st Baron Seymour of Sudeley and married the King 's stepmother , Catherine Parr .
Simplified: When Henry died the castle became the property of his son , Edward VI of England , who gave it to his uncle , Thomas Seymour .