What is Alfonso IX of León?
{{Infobox Royalty | name = Alfonso IX | image = Alfonso IX de León (Ayuntamiento de León).jpg | caption = An artist's [[:en:wikt:depiction|depiction]] of Alfonso | succession = [[King of León#List of Leonese monarchs|King of León]] and [[King of Galicia#List of Galician monarchs|Galicia]] | reign = 22 January 1188 — 24 September 1230 | coronation = 5 February 1188 | predecessor = [[Ferdinand II of León|Ferdinand II]] | successor = [[Ferdinand III of Castile|Ferdinand III]] | spouse = {{plainlist| {{marriage|[[Theresa of Portugal, Queen of León|Theresa of Portugal]]|1191|1196|end=divorce}} * {{marriage|[[Berengaria of Castile]]|1197|1204|end=divorce}} }} | issue = {{plainlist| * [[Infanta Sancha of León|Sancha, Infanta of León]] * [[Ferdinand of León (died 1214)|Fernando, Infante of León]] * [[Infanta Dulce of León|Dulce, Infanta of León]] * [[Ferdinand III of Castile|Ferdinand III, King of Castile and León]] * [[Alfonso of Molina|Alfonso, Lord of Molina and Mesa]] * [[Berengaria of León|Berengaria, Latin Empress]] }} | issue-type = [[Issue (genealogy)|Issue]] | house = [[Castilian House of Ivrea|Ivrea]] | father = [[Ferdinand II of León|Ferdinand II of León and Galicia]] | mother = [[Urraca of Portugal]] | birth_date = {{Birth date|1171|8|15|df=yes}} | birth_place = [[Zamora, Spain|Zamora]] | death_date = {{Death date and age|1230|9|24|1171|8|15|df=yes}} | death_place = Villanueva de [[Sarria]] | burial_date = | burial_place = [[Cathedral of Santiago de Compostela]] | religion = [[Catholic Church|Roman Catholicism]] }} '''Alfonso IX''' (15 August 1171 — 24 September 1230) nicknamed '''the Warrior King''' ({{lang-es|el Rey Guerrero}}) was [[King of León#List of Leonese monarchs|King of León]] and [[King of Galicia#List of Galician monarchs|Galicia]] from in 1188 until his death in 1230. During his reign, León became more powerful and modern. He founded the [[University of Salamanca]] in 1212.