Signe Hammarsten-Jansson Signe Hammarsten-Jansson Signe "Ham" Hammarsten-Jansson (née Hammarsten, 1 June 1882 Hannäs, Sweden - 6 June 1970 Porvoo) was a Swedish graphic artist who designed, among other things, around 220 Finnish postage stamps during the course of three decades. She was the mother of Tove Jansson, creator of the highly successful "Moomin" characters. Signe Hammarsten came from a respectable Swedish clerical family and was the child of a pastor's daughter and a court chaplain. Hammarsten's parents were opposed to her becoming an artist, and as a girl she had considered a career as a surgeon. Hammarsten went through 8 years of
Tove Jansson Flood". The next two books, "Comet in Moominland" and "Finn Family Moomintroll", published in 1946 and 1948 respectively, were highly successful in sales, adding to sales of the first book. For her work as a children's writer she received the Hans Christian Andersen Medal in 1966. Starting with the semi-autobiographical "Bildhuggarens dotter" ("Sculptor's Daughter") in 1968, Jansson wrote six novels, including the admired "Sommarboken" ("The Summer Book"), and five books of short stories for adults. Tove Jansson was born in Helsinki, Grand Duchy of Finland, Russian Empire. Her family, part of the Swedish-speaking minority of Finland, was an artistic one: