Swedish writer, cartographer, and prelate (1490–1557)
Olaus Magnus (born Olof Månsson; October 1490 – 1 August 1557) was a Swedish writer, cartographer, and Catholic clergyman. Biography. Olaus Magnus (a Latin translation of his Swedish birth name Olof Månsson) was born in Linköping in October 1490. Like his elder brother, Sweden's last Catholic archbishop Johannes Magnus, he obtained several ecclesiastical preferments, among them a canonry at Uppsala and Linköping, and the archdeaconry of Strängnäs.
https://en.wikipedia.org/wiki/Olaus_Magnus