Markgraf von Ostarrichi (1095–1136)
Melk, Melk District
Klosterneuburg, Tulln District
Kollegiatstift, später Augustinerchorherrenstift St. Maria, Klosterneuburg, Österreich
Leopold III. (* 29. September 1073; † 15. November 1136) was a markgraf von Ostarrichi. He was 63 years old. He had at least 6 children (3 sons and 3 daughters).