Editing 1138 (section)

==== Europe ====
* [[March 7]] &ndash; [[Conrad III of Germany|Conrad III]] is elected as [[King of the Romans#List|King of Germany]], in the presence of the papal legate [[Theodwin of Santa Rufina|Theodwin]] at [[Koblenz]]. He is crowned at [[Aachen]] six days later (on [[March 13]]), and acknowledged in [[Bamberg]] by several German princes of southern [[Kingdom of Germany|Germany]].<ref name="Quitz2014">{{cite book|author=Daniel Quitz|title=Die Königswahl Konrad III. 1138 und seine Politik gegenüber den Welfen|url=https://books.google.com/books?id=Ra6aAwAAQBAJ&pg=PA1|date=19 May 2014|publisher=GRIN Cerlag|isbn=978-3-656-65725-5|pages=1–}}</ref> [[Henry X, Duke of Bavaria|Henry X]] (the Proud), son-in-law and heir of the late King [[Lothair III, Holy Roman Emperor|Lothair III]], refuses his allegiance to Conrad. He is deprived of all his Saxon territories, which are given to [[Leopold, Duke of Bavaria|Leopold IV]] (the Generous). 
* Summer &ndash; A civil war breaks out in the [[Holy Roman Empire]], a struggle begins between the [[Guelphs and Ghibellines]], while the family name [[House of Welf|Welf]] of Henry X will be corrupted into ''Guelph''. 
* [[October 20]] &ndash; [[Bolesław III Wrymouth|Bolesław III]] (Wrymouth) dies after a 31-year reign. He divides [[Kingdom of Poland (1025–1385)|Poland]] among his sons: [[Władysław II the Exile|Władyslaw II]] (the Exile) receives [[Duchy of Silesia|Silesia]] and the [[Seniorate Province|Senioral]] territories – which includes the [[Kraków]] and [[Łęczyca]] regions, as well as parts of [[Kuyavia|Kujawy]] and [[Greater Poland|Wielkopolska]] ("Greater Poland"). [[Bolesław IV the Curly|Bolesław IV]] (the Curly) receives [[Duchy of Masovia|Masovia]] and [[Mieszko III the Old|Mieszko III]] receives the newly established [[Duchy of Greater Poland]]. The 7-year-old [[Henry of Sandomierz|Henry]] becomes duke of [[Sandomierz]]. Bolesław's last son, [[Casimir II the Just|Casimir II]] receives nothing, as he is born after his father's death.<ref>Richard Brzezinski (1998). ''History of Poland – Old Poland and the Piast Dynasty'', pp. 20–21. {{ISBN|83-7212-019-6}}.</ref>