 Pari gbolohun ti o tẹle: John ni ọdọmọkunrin ti awọn ọmọkunrin mẹta ti a bi si John Jacob Astor V, 1st Baron Astor of Hever 18861971 ati Lady Violet Mary Elliot-Murray-Kynynmound 18891965. O ni awọn arakunrin agbalagba meji, Gavin Astor, ti o jogun barony baba rẹ, ati Hugh Astor. Iya rẹ ni awọn ọmọ meji, Mary Petty-Fitzmaurice, ati George Petty-Fitzmaurice, lati igbeyawo akọkọ rẹ si Oluwa Charles Petty-Fitzmaurice ti o pa ni iṣẹ ni : Ìlú Ypres. Àbúrò rẹ àgbà, George tó jẹ àbúrò bàbá rẹ di Marquess kẹjọ ti Lansdowne 