Campbellville. By 1952, the farm had become a burden to Olga and her husband. They were both elderly; their sons had moved away; labour was hard to come by; the Colonel suffered increasing ill-health, and some of Olga's remaining jewelry was stolen. The farm was sold, and Olga, her husband and her former maid, Mimka, moved to a smaller five-room house at 2130 Camilla Road, Cooksville, Ontario, a suburb of Toronto now amalgamated into Mississauga. Mimka suffered a stroke that left her disabled, and Olga nursed her until Mimka's death on 24 January 1954. Neighbours and visitors to the region, including foreign and royal dignitaries, took interest in Olga, and visited her home. Among these were members of her extended family, including first cousin once removed Princess Marina, Duchess of Kent, in 1954, and second cousin Louis Mountbatten, and his wife Edwina, in August 1959. In June 1959, Queen Elizabeth II and Prince Philip (a first cousin twice removed and a first cousin once removed, respectively) visited Toronto and invited the Grand Duchess for lunch on board the royal yacht Britannia. Her home was also a magnet for Romanov impostors, whom Olga and her family considered a menace. By 1958, Olga's husband was virtually paralyzed, and she sold some of her remaining jewelry to raise funds. Following her husband's death in 1958, she became increasingly infirm until hospitalized in April 1960 at Toronto General Hospital. She was not informed or was not aware that her elder sister, Xenia, died in London that month. Unable to care for herself, Olga went to stay with Russian émigré friends, Konstantin and Sinaida Martemianoff, in an apartment above a beauty salon at 716 Gerrard Street East, Toronto. She slipped into a coma on 21 November 1960, and died on 24 November at the age of 78. She was interred next to her husband in York Cemetery, Toronto, on 30 November 1960, after a funeral service at Christ the Saviour Cathedral, Toronto. Officers of the Akhtyrsky Hussars and the Blue Cuirassiers stood guard in the small Russian church, which overflowed with mourners. Although she lived simply, bought cheap clothes, and did her own shopping and gardening, her estate was valued at more than 200,000 Canadian dollars (about $1.77 million as of 2020) and was mostly held as stock and bonds. Her material possessions were appraised at $350 in total, which biographer Patricia Phenix considered an