Carl Emil Pettersson (23 October 1875 – 12 May 1937) was a Swedish sailor who became king of Tabar Island in Papua New Guinea after he was shipwrecked in 1904.

He was washed ashore near a village and ended up in a hibiscus hedge, where he was immediately surrounded by islanders.

He then met Anglo-Swedish Jessie Louisa Simpson; together they returned to Tabar Island, where they married in 1923.

He painstakingly rebuilt his plantation, but bad investments and the failing market conditions made it difficult to recover.

Pettersson did however find a gold deposit[citation needed] on Simberi Island which he kept secret for years.

Pettersson became a popular figure in Swedish mass media in the 1930s, and his life was frequently featured in the women's magazines of the period such as Husmodern and Vecko-Journalen.

In 2012, film writer Jorn Rossing Jensen reported that Swedish producer Mirijam Johansson, of Sweden's Wanted Pictures, announced at Cannes that she had acquired the rights to Efraim Longstocking and the Cannibal Princess, a film based on a screenplay by Daniel Fridell and Ulf Stark and approved by Saltkråkan, the latter of which holds Lindgren's rights.