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Princess Mary, Viscountess Lascelles, with her two sons, Gerald and George, 1926 (1935). From The Royal Jubilee Book 1910-1935 [Associated Newspapers Ltd., London, 1935]. (Photo by The Print Collector/Getty Images)

Princess Mary, Viscountess Lascelles, with her two sons, Gerald and George, 1926 (1935). From The Royal Jubilee Book 1910-1935 [Associated Newspapers Ltd., London, 1935]. (Photo by The Print Collector/Getty Images)