Ki Ageng Mangir, also called Ki Ageng Wanabaya, is a person who can be separated with the Mataram. He is the one of few persons that braves to against Mataram and Panembahan Senopati. But how it can be?
The history of Ki Ageng Mangir starts from Brawijaya V, the last king in Majapahit. He has a son, named Radyan Alembumisani. In the further, Radyan Alembumisani goes to Gunung Kidul (it may run away from the Demak’s aggression). In Gunung Kidul, Radyan Alembumisani has a son, called Radyan Wanabaya. From this part, the history of Ki Ageng Mangir started. Radian Wanabaya, also called Ki Ageng Wanabaya II, has the other son from his second wife, named Bagus Baru Klinthing (the legend told that Bagus Baru Klinthing is a dragon). One day, Bagus Baru Klinthing wants to show to Ki Ageng Wanabaya II, that he is his son. Ki Ageng Wanabaya receives Bagus Baru Klinthing as his son, but with a requirement. The requirement is, Bagus Baru Klinthing have to hold Merapi with his body. In the further, Bagus Baru Klinthing cannot fill the requirement, but he uses his tongue to fill up the part. Finally, Ki Ageng Wanabaya cut his tongue, and the tongue became a weapon called Tombak Baru Klinthing.
Ki Ageng Wanabaya II’s son lives in Mangir, a place near Progo River and Bedog River. Thus, it is why Ki Ageng Wanabaya III well known as Ki Ageng Mangir. Why Panembahan Senopati is never attack Mangir? Ki Ageng Mangir or Ki Ageng Wanabaya III has a weapon called Tombak Baru Klinthing that made from his brother in law’s tongue. The weapon is very powerful, even can give a sign when Ki Ageng Mangir is in danger.
Panembahan Senopati uses his daughter to kill Ki Ageng Mangir. He sent his daughter named Pembayun to be Ki Ageng Mangir’s wife. And the plan is success. Finally Pembayun become the Ki Ageng’s wife and she covered Tombak Baru Klinthing with her clothes. One day, Ki Ageng Mangir goes to Mataram (he have to do it, because Panembahan Senopati is his father now), but in Kraton, Panembahan Senopati kill him in one punch. Without Tombak Baru Klinthing, Panembahan Senopati can defeat him.
Finally, the bride of Ki Ageng Mangir brought to Kotagede, and his grave is half outside, and half inside, the sign that Ki Ageng Mangir or Ki Ageng Wanabaya III is an enemy and a family in the same time.