Gritli's Children

Johanna Spyri (12 June 1827 – 7 July 1901) was an author of children's
stories, and is best known for Heidi. Born Johanna Louise Heusser in the rural
area of Hirzel, Switzerland, as a child she spent several summers in the area
around Chur in Graubunden, the setting she later would use in her novels.

— Excerpted from Wikipedia, the free encyclopedia.