Prince Nicholas of Greece and Denmark, the third son of George I of Greece, first proposed in 1900, but Elena's mother was reluctant to allow her daughter to marry a younger son with no real fortune or prospects of inheriting a throne. She finally agreed to let Elena marry Nicholas, who was Elena's second cousin through his mother Olga Constantinovna of Russia and her father Vladimir Alexandrovich of Russia, in 1902 after it became clear that no other offers were on the horizon.[4]