why was thomas seymour executed
The Execution of Thomas Seymour, 1st Baron Sudeley and Lord High Admiral. Posted By Claire on March 20, 2011. On this day in history, the 20th March 1549, Thomas Seymour, Baron Sudeley, was executed for treason after his nephew, King Edward VI, signed the death warrant that Protector Somerset, Seymourâs brother, could not bring himself to sign.