Today in Tudor History...

23 January 1516 –Death of  Ferdinand II of Aragon 

1570 – James Stewart, 1st Earl of Moray, regent for the infant King James VI of Scotland, is assassinated by firearm, the first recorded instance of such.

1571 – The Royal Exchange opens in London.

1579 – The Union of Utrecht forms a Protestant republic in the Netherland

source:wikipedia