Ulf Gottfrid Stark (12 July 1944 – 13 June 2017) was a Swedish author and screenwriter (he adapted several of his own books for film and wrote the screenplay for the 1999 film Tsatsiki, morsan och polisen). Stark has collaborated with the illustrators Anna Höglund and Mati Lepp. From 1989 to 1998 he was an elected member of the Swedish Academy for Children's Books. In 1998 he received the Nordic Children's Book Prize. Career. Stark was born and grew up in Stureby, Stockholm Municipality, which place features in several of his books.
https://en.wikipedia.org/wiki/Ulf_Stark