Historical Events Mar 9 David Rizzio, the private secretary to Mary I of Scotland, is murdered in the Palace of Holyroodhouse, Edinburgh, Scotland Famous Deaths Mar 9 David Rizzio, Italian secretary of Mary Queen of Scots, murdered by Protestant nobles Mar 26 Antonio de Cabezon, Spanish composer, dies Mar 28 Siegmund Freiherr von Herberstein, Austrian diplomat, dies at 79 1565 History by Year 1567