Margaret Thatcher's grandson is rising star of American footballBy TOM KELLY - More by this author » Last updated at 20:32pm on 23rd December 2007 High school hero: Michael Thatcher She was known as the Iron Lady and now her teenage grandson is a rising star of gridiron. Michael Thatcher is continuing to foster Baroness Thatcher's special relationship with the U.S. - by helping his high school American football team into the Texas state finals. The 18-year-old took a brilliant diving catch from a looping 48-yard pass in front of 10,000 fans last week. The dramatic moment was broadcast live...