 Complete the following phrase:  John was the youngest of three sons born to John Jacob Astor V, 1st Baron Astor of Hever 18861971 and Lady Violet Mary Elliot-Murray-Kynynmound 18891965. He had two elder brothers, Gavin Astor, who inherited his fathers barony, and Hugh Astor. His mother had two children, Mary Petty-Fitzmaurice, and George Petty-Fitzmaurice, from her first marriage to Lord Charles Petty-Fitzmaurice who was killed in action at 