Johannes Bilberg (17 November 1646 – 11 March 1717) was a Swedish theologian, professor and bishop.[1] As a professor he was involved in the controversy over Cartesianism.[2]
He was the son of school principal and vicar Jonas Amberni and his wife Ingrid Denckert.[1] At the age of thirteen Bilberg started studying at Uppsala University.[1] After he graduated with Bachelor of Arts,[3] he took employment as a tutor for a young baron named Ulf Bonde on a trip around the continent of Europe when they visited royal courts and universities.[1] When he returned home in 1677 he was named professor of mathematics at Uppsala University.[1]
At this time a controversy had erupted between the new Cartesian philosophy and the theological orthodoxy in Uppsala.[4] Priests at the Riksdag were also involved in the debate, which made the government feel compelled to set up a special commission to investigate the matter.[1] A compromise was reached and Bilberg and the Cartesians were given full rights.[1]
The conflict and battle continued until Bilberg, with the blessing of the King of Sweden, became dean and vicar in Örebro in 1692.[1] In his new home he gathered a number of young disciples who he educated in theology and philosophy.[1] At the command of King Karl XI, Bilberg travelled to Torneå and Kengis along with Anders Spole to study the midnight sun.[1][5] The expedition, dedicated to Karl as "sun-king",[6] observed that the sun could indeed be observed around the clock at high altitudes.[7] Bilberg afterwards published a work in Latin and Swedish under the title of Refractio solis inoccidui, in septemtrionalibus oris (About the refraction of the midnight sun, in the Northlands).[1]
In 1683, Bilberg married Margareta Staaf, whose father was a trader in Uppsala.[8] The couple had four children together. All four were knighted by Karl XII in Bender at which time they were entitled to retain their father's last name of Bilberg.[1][8]
In 1701, Bilberg was named bishop of Strängnäs after Erik Benzelius resigned to become archbishop.[9] He continued as bishop in that congregation until his death in 1717.[9]