Career
Married to Anne Jakobsdatter Flemming and had three sons. Mogens Ulfeldt (1569–1616), Jakob Ulfeldt (1567–1630) and Corfitz Ulfeldt (1559–1614). He is mostly known for his very troubled diplomatic journey into Russia in 1578 during which he had to conclude an unfavourable treaty with Tsar Ivan IV that brought him in disgrace at home.
His bitter attempts of getting satisfaction only damaged his case.
However his account of his Russian travels (edited in 1978) is still considered a main source of Danish-Russian relations as well as of 16th Century Russia.
