After leaving the House of Commons, Thatcher was dubbed '''Baroness Thatcher of Kesteven''' and entered the House of Lords. Denis Thatcher was given a Baronetcy, which ensured that their son, Mark, would inherit the title of "Sir Mark". | After leaving the House of Commons, Thatcher was dubbed '''Baroness Thatcher of Kesteven''' and entered the House of Lords. Denis Thatcher was given a Baronetcy, which ensured that their son, Mark, would inherit the title of "Sir Mark". |