Selma Lagerlof was an openly white supremacist. She never married, apparently waiting for the right man. There is also some evidence that she was a lesbian, although that was kept secret from her many fans.
Selma Ottilia Lovisa Lagerlöf (Swedish: [ˈsɛlˈma ˈlɑːɡə(r)ˈløːv] (About this sound listen); 20 November 1858 – 16 March 1940) was a Swedish author and teacher. She was the first female writer to win the Nobel Prize in Literature.
She met Sophie Elkan in 1894. A Swedish writer of Jewish origin, Elkan became her friend and companion and their letters suggest Lagerlöf fell deeply in love with her. Over many years, Elkan and Lagerlöf critiqued each other’s work. Lagerlöf wrote of Elkan’s strong influence on her work, often disagreeing sharply with the direction Lagerlöf wanted to take in her books. Selma’s letters to Sophie were published in 1993, titled Du lär mig att bli fri 
In 1902, Lagerlöf was asked by the National Teacher’s Association to write a geography book for children. She wrote Nils Holgerssons underbara resa genom Sverige (The Wonderful Adventures of Nils), a novel about a boy from the southernmost part of Sweden, who had been shrunk to the size of a thumb and who travelled on the back of a goose across the country. Lagerlöf mixed historical and geographical facts about the provinces of Sweden with the tale of the boy’s adventures until he managed to return home and was restored to his normal size. The novel is one of Lagerlöf’s most well-known books, and it has been translated into more than 30 languages.
At the start of World War II, she sent her Nobel Prize medal and gold medal from the Swedish Academy to the government of Finland to help raise money to fight the Soviet Union. The Finnish government was so touched that it raised the necessary money by other means and returned her medal to her.