) in
Solna, Sweden Sibylla became a widow on 26 January 1947 when Gustaf Adolf died in an
airplane crash at the Copenhagen
Kastrup Airport in
Denmark. Their only son, Carl Gustaf, became second-in-line to the throne at the age of nine months and, later,
Crown Prince at the age of four. In 1950, Sibylla moved from Haga to the
Royal Palace of Stockholm. During the summers, she stayed at
Solliden. During these years, she developed an interest in environmental issues. After her stepmother-in-law,
Queen Louise, died in 1965, Princess Sibylla became the highest ranking woman in the royal family. She took over her duties in support of her father-in-law,
King Gustaf VI Adolf. During these years, she enjoyed somewhat more popularity, as she was more exposed, and as her humour and sense of self-irony became more known and appreciated. She continued with the so-called "Democratic ladies lunches" for career women initiated by Queen Louise in 1962 as a replacement for the court presentation. Sibylla died, aged 64 of cancer, on 28 November 1972, in Stockholm less than a year before her son ascended to the throne. ==Ancestry==