Editing 1581 (section)

=== January&ndash;March ===
* [[January 11]] &ndash; [[Chandrasen Rathore]], ruler of the [[Marwar|Kingdom of Marwar]] (now part of the state of Rajasthan in India) dies at the age of 39, leaving a power vacuum that allows the [[Mughal Empire]] to take control of the kingdom.<ref>Visheshwar Sarup Bhagava, ''Marwar And The Mughal Emperors (1526–1748)'' (Munshiram Manoharlal, 1966) pp. 52–53</ref>
* [[January 14]] &ndash; The [[Treaty of Drohiczyn]] is concluded, ending the [[Livonian War]] and adding the conquered city of [[Riga]] to the Polish-Lithuanian Commonwealth.<ref>Ralph Tuchtenhagen, ''Geschichte der baltischen Länder'' (History of the Baltic Nations) (C. H. Beck, 2005) p. 37</ref>
* [[January 23]] &ndash; The [[Treaty of Plessis-les-Tours]] between the Duchy of Anjou and most of the states of the Dutch Republic is ratified at [[Bourdeaux]], granting [[François, Duke of Anjou]] executive authority over the Republic with the title "Protector of the Liberty of the Netherlands".<ref>John Lothrop Motley, ''The Rise of the Dutch Republic, 1580-1582'' (Harper and Brothers, 1855)</ref>
* [[February 8]] &ndash; (7th waxing of Tabaung 942 ME) Prince Shin Thissa, later to become King of Burma in 1599 as [[Nyaungyan Min]], receives his first executive job when he is appointed to be Governor of Nyaungyan by his father, King [[Bayinnaung]].<ref>''Hmannan Yazawin '' Vol. 3 (Myanmar Ministry of Information, 2003) p.57</ref>
* [[February 23]] &ndash; The Spanish Army is forced to abandon the [[Siege of Steenwijk (1580–1581)|siege of Steenwijk]] in the Netherlands after more than four months.
* [[March 18]] &ndash; The [[Parliament of England]]'s ''Act against Reconciliation to Rome'' imposes heavy fines, for practising [[Roman Catholicism]].<ref name=CBH>{{cite book|last=Palmer|first=Alan|last2=Palmer |first2=Veronica|year=1992|title=The Chronology of British History|publisher=Century Ltd|location=London|pages=160–162|isbn=0-7126-5616-2}}</ref>
* [[March 25]] &ndash; [[Iberian Union]]: [[Philip II of Spain]] is crowned Philip I of Portugal.