Key Facts
- Siege start
- April 1537
- Surrender date
- 17 May 1537
- Rumoured relief force
- 1,500 men under Truid Ulfstand
- Defensive tactic
- Canon fire day and night; multiple surrender refusals
- Surrender condition
- Full pardon for defenders; Skanke retains possessions and deaconate
Strategic Narrative Overview
Protestant forces laid siege to Steinvikholm Castle in April 1537, combining a land assault with a naval blockade of the surrounding fjord. The Catholic defenders responded with continuous canon fire and repeatedly rejected demands to surrender. The siege continued for several weeks until rumours reached the garrison that Danish noble Truid Ulfstand was advancing on Trondheim with 1,500 men, leading the defenders to reconsider their position.
01 / The Origins
Following the Protestant Reformation sweeping Scandinavia, the Catholic Archbishop of Norway Olav Engelbrektsson fled the country in early 1537, collapsing organised Catholic ecclesiastical authority. Remaining Catholic loyalists, including Deacon Knud Pederson Skanke and noble Tord Roed, held Steinvikholm Castle in Stjørdalen as a last redoubt against the advancing Protestant forces aligned with the Danish-Norwegian crown's Reformation agenda.
03 / The Outcome
The garrison surrendered on 17 May 1537 under negotiated terms: all defenders were to receive full pardons for their role in the Catholic resistance, and Knud Pederson Skanke was permitted to retain his personal possessions and his position as deacon. The fall of Steinvikholm effectively ended the last organised Catholic resistance in Norway and consolidated the Protestant Reformation across the kingdom.
Belligerents & Mobilization Analysis
Side A
1 belligerent
Side B
1 belligerent
Knud Pederson Skanke, Tord Roed.
Kinetic Engagement Axis
Scroll horizontally to view full axis. Events plotted relatively.