He Fell for His Cousin
Mountbatten had fallen hopelessly in love with the Grand Duchess Maria Nikolaevna, who happened to be his cousin. He was 10 and she was 11 at the time, and he claimed he wanted to marry her. And it seems he continued to hold feelings for her up until his death. According to rumors, he kept a photo of Nikolaevna in his room. But tragedy had ended any hope of a future with his cousin.