In 1909, Prince John's great-aunt, the Dowager Empress of Russia wrote to her son, Emperor Nicholas II, that "George's children are very nice ... The little ones, George and Johnny are both charming and very amusing..."
Princess Alexander of Teck described Prince John as "very quaint and one evening when Uncle George returned from stalking he bent over Aunt May and kissed her, and they heard Johnny soliloquize, 'She kissed Papa, ugly old man!'"
George V once said to U.S. President Theodore Roosevelt that "all [his] children [were] obedient, except John"—apparently because Prince John alone, among the King's children, escaped punishment from their father.