Nils Abraham af Ursin

Nils Abraham af Ursin (17 August 1785 – 27 November 1851) was a Finnish medical doctor, anatomist, and university administrator. He served as professor of anatomy and physiology at the Imperial Alexander University in Helsinki from 1825 to 1846 and as rector of the university from 1839 to 1845. He was ennobled in 1845. Ursin contributed to the development of physiology and forensic medicine in Finland and was known both as a strict academic leader and as a popular practicing physician.

Ursin was born in Iitti, Kymmenegård County. His father, Jakob Johan Ursinus, was the parish priest of Iitti, and his mother was Engel Christina Nohrström, daughter of Abraham Nohrström, who had moved from Dalarna in Sweden to Finland. The family originated from the Karhula farm in Jääski (now Lesogorsky, Russia). The members of the family first Swedicized their name to Björn ("bear") and later Latinized it to Ursinus, which was later shortened to Ursin. Known for his strictness, he sought to keep students orderly, which eventually led to a complete rift between him and the student body by the end of his rectorship.

As a practicing physician, Ursin promoted healthy living, exercise, and swimming. He regularly bathed in the sea near what later became known as Ursin’s Rock in Helsinki, often accompanied by students.