Alexei Nikolaevich Romanov
Rasputin was the only person that ever had the ability to heal
Alexei.
Alexei Romanov suffered from Hemophilia and nothing the royal family did could heal him. When Rasputin arrived in St. Petersburg, the royal family was anxious to see if the man with mystical powers could save their son. When it was realized that Rasputin could heal Alexei, he became a trusted advisor to the Czarina. There is much debate over how Rasputin was able to heal the young boy when he was sick.