Alfonso IX was King of León from the death of his father Ferdinand II in 1188 until his own death.
- Occupation
- sovereign
- Position held
- monarch of Galicia, King of Castile (Iure uxoris)
- Citizenship
- Kingdom of Leon, Kingdom of Galicia
- Born
- August 15, 1171
- Died
- September 24, 1230, September 23, 1230