As of December 2014, the last king of England was King George VI, father of Queen Elizabeth II. He ascended the throne in 1937 at the abdication of his brother King Edward VIII, and reigned until his death in 1952.
Born Albert Frederick Arthur George Saxe-Coburg-Gotha, King George VI was the second son of King George V. Upon the death of George V in January of 1936, the elder son, Prince Edward, became king. In December of the same year, he abdicated the throne in order to marry an American divorcée. The coronation of King George VI took place in May of 1937. Though he had been called Albert in the past, he took the name George after his father. He was the reigning monarch of the United Kingdom through World War II, working closely with Prime Ministers Neville Chamberlain and Winston Churchill.