Guðmundur Pétursson Thorsteinsson, better known as Muggur (5 September 1891, Bíldudalur – 27 July 1924, Søllerød) was an Icelandic painter, graphic artist, author and film actor. His younger brothers, Samúel, Gunnar and Friðþjófur, were all professional football players.
His father, Pétur (1845-1929) was one of the richest men in Iceland; founder of the fishing company Milljónarfélagið. When he was twelve, the family moved to Copenhagen, but they travelled continuously between there and Iceland.
He studied at the Royal Danish Academy of Fine Arts from 1911 to 1915, but also took study trips to Germany and Italy. In 1915, he made a visit to the United States, where his works had recently been exhibited to good reviews in the Evening Sun.
In addition to his paintings, he wrote and illustrated a children's book, The Story of Dimmalimm, about a young girl and an enchanted swan. It was written in 1921 for a niece, while he was on board a cargo ship sailing from Italy to Iceland, and was published in 1942. Later, Jóhannes úr Kötlum turned it into a verse play and it was also staged as a ballet, with music by Atli Heimir Sveinsson. He created numerous drawings inspired by the Eddas as well and created Iceland's first unique deck of playing cards.
A brief marriage that ended in divorce led him to drink heavily. In 1923, already in deteriorating health, he was kicked in the back by a horse. After a lengthy stay at a spa in France, he returned to the family estate in Denmark and died of a chest ailment (possibly tuberculosis), aged only thirty-two. Most of his works are in the National Gallery of Iceland.
- The Kiss, 1918
- Carrying Coal, 1919
- Seventh Day in Paradise, 1920
- Snæfellsjökull, 1922
- Brief biography with photographs, by Elfar Logi Hannesson @ Arnfirðingur.
- "Movie-Star, Painter, Man Of The World: The Story Of Muggur" @ The Reykjavík Grapevine.
- Björn Theodór Björnsson, Guðmundur Thorsteinsson, Muggur. Ævi hans og list (Life and Art), Helafell, 1960
Media related to Muggur at Wikimedia Commons