What Happened in 1230
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- Mar 9 Bulgarian Tsar Ivan Asen II defeats Theodore of Epirus near the village of Klokotnitsa
- May 2 William de Braose, 10th Baron Abergavenny is hanged by Prince Llywelyn the Great
- Jul 27 Treaty of San Germano between Emperor Frederik II & Pope Gregory IX
- Aug 31 Bishop Willebrand of Utrecht grants Swells state justice
- May 2 William de Braose, Lord of Abergavenny (b. 1197)
- Jul 28 Duke Leopold VI of Austria (b. 1176)
- Sep 24 Alfonso IX, King of León and Galicia (1188-1230), dies at 59
- Dec 15 Ottokar I, king of Bohemia (1197-1230), dies
- Dec 23 Berengaria of Navarre, queen of Richard I of England