Aug 15 King Alfonso IX of Leon (d. 1230) was born on this day in history.
Feb 20 Conan IV, Duke of Brittany (b. 1138) died in the year 1171.
May 01 Dermot MacMurrough, last Irish King of Leinster, dies in the year 1171.
Jun 09 Jacob Ben Meir, [Rabbenu Tam], French Tosofist, dies on this day in history.
Aug 11 On this day in history louis I, Earl of Wage/Rieneck, dies
Nov 02 Baudouin IV, count of Henegouwen (1120-71), dies on this day in history.
Nov 08 In the year 1171 death of baldwin IV, Count of Hainaut (b. 1108)