Mogens Ulfeldt

Mogens Ulfeldt (22 April 1569 – 15 June 1616) was a Royal Dano-Norwegian Navy officer and landowner.

A favourite of the young Christian IV, in 1599 he was appointed vice captain of the king's ship on an expedition to the Arctic Sea.

In 1609–10, he was commander of the flotilla that defended the Danish dominium maris baltici and successfully terminated the Swedish blockade of Riga.

In February 1611, he was probably part of the Privy Council majority that condoled Christian IV's decision to declare war against Sweden.

An "action by his wife" prompted Ulfeldt to imprison her at Selsø Castle, with the king's permission.