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
Sophia Jansson images, as well as the series of medals that were also issued. In 2006 Jansson was invited as a notable speaker for one of the Monthly Luncheons hosted by IWC Helsinki. In February 2007 Jansson was invited to speak at the Scandinavia House in New York City. In September 2008 Jansson participated as a member of the Committee of Honor in the renowned IBBY World Congress. Jansson participated in the Helsinki Design Week 2008. Sophia Jansson Vivica Sophia Jansson (born 1962) is the daughter of cartoonist Lars Jansson and the niece of the famous Finnish writer and painter Tove Jansson.