Passage: In 1887, the health of the 90-year-old William I declined rapidly, indicating that the succession was close. However, the crown prince was also ill. Increasingly sickly, the physicians told him he had laryngeal cancer. To confirm his suspicions, Frederick was examined by British physician Morell Mackenzie, who after a biopsy did not find any sign of illness.With the agreement of his physicians, Frederick went with his wife to Great Britain for the Golden Jubilee of Queen Victoria in June 1887. On that trip, the couple secretly brought to Windsor Castle three boxes full of personal documents that they wanted to keep away from the eyes of Bismarck and the Hohenzollerns. Always eager to harm the crown prince, the imperial chancellor continued his intrigues against Victoria. With the help of chamberlain Hugo von Radolinski and painter Götz de Seckendorff, he tried to prepare a final report against the crown princess.

Question: who helped them?
chamberlain Hugo von Radolinski and painter Götz de Seckendorff