(Mary Stuart) 1542-87; queen of Scotland (1542-67): beheaded
See Mary, Queen of Scots in American Heritage Dictionary 4
also Mary Stuart 1542-1587.
Queen of Scotland (1542-1567). The Catholic monarch during the bitter Scottish Reformation, she was forced to abdicate in favor of her son, the future James I of England. After fleeing to England (1568), she was imprisoned by Elizabeth I. Catholic supporters plotted to place her on the English throne, resulting in her trial and execution for sedition.