10. During which king's reign was the Great (White) Tower, the original stone fortress of the Tower of London, built?
From Quiz History of The Tower of London
Answer:
King William I
The Tower of London began as a timber fortress, in an earthern enclosure, on the north bank of the Thames in London. In 1078, William I (the Conqueror) replaced this timber fortress with a massive stone fortress called the Great Tower. The Great Tower has also been called the White Tower since it was whitewashed in 1241, during the reign of Henry III. The Great Tower rises 90 feet in height, and measures 118 feet by 117 feet. Gannulf, the Bishop of Rochester, is thought to have designed the Great Tower for William I, who reigned from 1066-1087. Geoffrey de Mandeville was appointed as the first Tower Constable. Not only was the Tower an impregnable fortress, but it also served as a royal residence in London during the reign of several monarchs. Additions, repairs, and improvements to the Tower of London were added over the centuries until is a complex of twenty towers covering an eighteen acre site. Of the other kings mentioned, King Edward (known as the Confessor) was king from 1042-1066, King Harold II was king from January 6, 1066 until October 14, 1066, when he was killed, and his army defeated, by William, the Duke of Normandy, during the Battle of Hastings. Henry I was the son of William I, and reigned after the death of his brother, William Rufus.