Páll Þorsteinsson (1909–1990) was born in Hnappavellir, son of farmer Þorsteinn Þorsteinsson and his wife Guðrún Þorláksdóttir. As a young man he was sent to receive education to Laugarvatn in the year 1930, which was not common at that time. After that he graduated as a teacher from the Teachers college of Iceland in the year 1934. He then worked with teaching children in Öræfi, mostly throughout 1930 to 1945. He remained a farmer at Hnappavellir from 1935 to 1980. He was a member of the Öræfi district council during 1934-1982 and its officer in the years 1945-1984. Páll was Member of Parliament for Austur-Skaftafellssýsla- and later for Austurland constituency for 32 years consecutively, from 1942-1974 (for the Progressive Party).
Througout Páll used his energy to serve his community and constituency. His main interests are clear from his writings that almost entirely concern the region for which he strived to serve. He wrote on social matters and accumulated immense knowledge on transportation and travel in the Austur-Skaftafellssýsla, dating back to the settlement period of Iceland that began in the ninth century (AD). In addition he left behind numerous articles on economy and employment in Iceland and wrote on historical matters in Öræfi.