When did the reign end of the Queen for whom the TV series "Reign" is based on? 
Reign (season 1):  The series follows the early exploits of Mary, Queen of Scots, and was created by Stephanie SenGupta and Laurie McCarthy. Mary, Queen of Scots: Mary, Queen of Scots (8 December 1542 – 8 February 1587), also known as Mary Stuart or Mary I, reigned over Scotland from 14 December 1542 to 24 July 1567.
24 July 1567