Ejler Allert (1881–1959), Danish rower who competed in the 1912 Summer Olympics
Some of the most well-known prisoners at Dragsholm Castle include the last Catholic Bishop in Roskilde, the former owner of the castle, Joachim Rønnow; the 4th Earl of Bothwell, third husband of Mary, Queen of Scots; and the seemingly raving mad squire, Ejler Brockenhuus.