Castle, Sweden, with Crown Prince Gustaf of Sweden and his wife, Louise. Olga began to sell her own paintings, of Russian and Danish scenes, with exhibition auctions in Copenhagen, London, Paris, and Berlin. Some of the proceeds were donated to the charities she supported. Neutral Denmark was invaded by Nazi Germany on 9 April 1940 and was occupied for the remainder of World War II. Food shortages, communication restrictions, and transport closures followed. As Olga's sons, Tikhon and Guri, served as officers in the Danish Army, they were interned as prisoners of war, but their imprisonment in a Copenhagen hotel lasted less than two months. Tikhon was imprisoned for a further month in 1943 after being arrested on charges of espionage. Other Russian émigrés, keen to fight against the Soviets, enlisted in the German forces. Despite her sons' internment and her mother's Danish origins, Olga was implicated in her compatriots' collusion with German forces, as she continued to meet and extend help to Russian émigrés fighting against communism. On 4 May 1945, German forces in Denmark surrendered to the British. When economic and social conditions for Russian exiles failed to improve, General Pyotr Krasnov wrote to the Grand Duchess, detailing the wretched conditions affecting Russian immigrants in Denmark. She in turn asked Prince Axel of Denmark to help them, but her request was refused. With the end of World War II, Soviet troops occupied the Danish island of Bornholm, and the Soviet Union wrote to the Danish government accusing Olga and a Danish Catholic bishop of conspiracy against the Soviet government. The surviving Romanovs in Denmark grew fearful of an assassination or kidnap attempt, and Olga decided to move her family across the Atlantic to the relative safety of rural Canada. Emigration to Canada In May 1948, the Kulikovskys travelled to London by Danish troopship. They were housed in a grace and favour apartment at Hampton Court Palace while arrangements were made for their journey to Canada as agricultural immigrants. On 2 June 1948, Olga, Kulikovsky, Tikhon and his Danish-born wife Agnete, Guri and his Danish-born wife Ruth, Guri and Ruth's two children, Xenia and Leonid, and Olga's devoted companion and former maid Emilia Tenso ("Mimka") departed Liverpool on board the Empress of Canada. After a rough crossing, the ship docked at Halifax, Nova Scotia. The family lived in Toronto, until they purchased a farm in Halton County, Ontario, near