Heinrich Gresbeck

Heinrich Gresbeck, also known as Henry Gresbeck, was a carpenter who was living in the city of Münster in 1534 when the Münster Rebellion began. He wrote the only eyewitness account of events ''within'' the city for the fifteen months duration of the rebellion, and played a key role in the recapture of the city by guiding the siege forces of Franz von Waldeck, Bishop of Münster, inside the fortress gates.

For these actions Gresbeck has been described in various texts as a "convert", "traitor", "collaborator", "deserter", "chronicler", and "disgruntled city refugee". Provided by Wikipedia