Sundstein was the son of Johanna Malena (born Jensen) and Hans Jacob Matras Sundstein from Tórshavn. He was married to Lydia Marsten (born 20 November 1927[1]) from Klaksvík.
Sundstein was a certified accountant and was a member of numerous boards of directors. In 1979 he was elected to the Løgting for the first time. He was the speaker of the Løgting from 1980 to 1984 and 1988 to 1989. He was Prime Minister of the Faroe Islands (Løgmaður) from 1989 to 1991 and was a minister from 1991 to 1993.
In 2008 Sundstein published his memoirs, becoming the first Faroese politician to do so.[2]
Johan Sundstein, better known as N0tail, is his grandson.[3]
Sundstein died on 8 July 2024, at the age of 91.[4][5]
Works
Frá barnaárum ungu til lívsins heystartíð. Stiðin 2008