Editing 1550 (section)

=== October&ndash;December ===
* [[October 2]] &ndash; [[Battle of Sauðafell]] in [[Iceland]]: [[Daði Guðmundsson]] of Snóksdalur defeats the forces of Catholic Bishop [[Jón Arason]], resulting in [[Icelandic Reformation|Iceland becoming fully Protestant]].<ref>{{cite journal |last1=Oleson |first1=Tryggvi J. |title=Bishop Jón Arason 1484-1550 |journal=Speculum |date=1953 |volume=28 |issue=2 |pages=245–278 |doi=10.2307/2849686 |jstor=2849686 |s2cid=163514382 |url=https://www.jstor.org/stable/2849686 |access-date=5 October 2023 |issn=0038-7134}}</ref> Arason is captured; he is executed, along with his two sons, on November 7. 
* [[October 16]] &ndash; [[Altan Khan]] crosses the [[Great Wall of China]] and besieges [[Beijing]], burning the suburbs.<ref>{{cite book |last1=Haw |first1=Stephen G. |title=Beijing – A Concise History |date=22 November 2006 |publisher=Routledge |isbn=978-1-134-15033-5 |page=61 |url=https://books.google.com/books?id=J8J8AgAAQBAJ&q=1550 |access-date=2 October 2023 |language=en}}</ref>
* [[November 25]] &ndash; [[Luis de Velasco, 2nd Viceroy of New Spain|Luis de Velasco]] becomes the second [[List of viceroys of New Spain|Viceroy of New Spain]], which encompasses all Spanish territory in North America and Central America. Velasco succeeds [[Antonio de Mendoza]], the first Viceroy, who has been ordered to become the [[Viceroy of Peru]].
* [[December 29]] &ndash; [[Bhuvanaikabahu VII of Kotte|Bhuvanaikabahu VII]], King of [[Kingdom of Kotte|Kotte]] on most of the island of [[Sri Lanka]], is assassinated by a gunman hired by the government of [[Portuguese India]].<ref>{{cite book|last=De Qyeyroz|first=Fernao|title=Temporal and Spiritual Conquest of Ceylon|publisher=A. C. Richards |date= 1930 |page=293}}</ref>