Question: The King of England, who William Scott presided over trials resulting from this purge of the administration, reigned for how long?

Related documents: [0]  [DOC] Sir William Scott (d. 1350s) was an English lawyer, and Chief Justice of the King's Bench from 8 January 1341 to 26 November 1346. Originally from Yorkshire – probably Birthwaite in Kexbrough – Scott as Chief Justice presided over trials resulting from Edward III's purge of the administration the previous years. Among those tried was William de la Pole. After retiring from this position, Scott largely withdrew from public life, probably because of ill health. He returned to Yorkshire to attend to his estates. The Oxford Dictionary of National Biography says that he "was still alive on 10 March 1352...but was certainly dead by 11 May 1356, and probably by 1354". [END] 
[1]  [DOC] Edward III (13 November 1312 – 21 June 1377) was King of England from 25 January 1327 until his death; he is noted for his military success and for restoring royal authority after the disastrous and unorthodox reign of his father, Edward II. Edward III transformed the Kingdom of England into one of the most formidable military powers in Europe. His long reign of 50 years was the second longest in medieval England and saw vital developments in legislation and government—in particular the evolution of the English parliament—as well as the ravages of the Black Death. [END]  
Answer: 50 years
50 years