Tove Jansson
He is the son of artists Viktor Jansson and Swedish-born Signe Hammarsten-Jansson, and the brother of writer Tove Jansson and cartoonist Lars Jansson. His photography has appeared in books by Tove Jansson, including "Skurken i Muminhuset" (1980) and "Anteckningar från en ö" (1993), and Tove's 1971 novel, "Lyssnerskan" is dedicated to him. He is also responsible for a great number of photos of his sister.