1231

'Years:' 1228 1229 1230 - 1231 - 1232 1233 1234

'Decades:' 1200s 1210s 1220s - '1230s' - 1240s 1250s 1260s

'Centuries:' 12th century - '13th century' - 14th century

Contents

Events

Births

Deaths

Events

★ Ardengus becomes bishop of Florence.

★ Emperor Frederick II promulgates the Constitutions of Melfi (also known as ''Liber Augustalis''), a collection of laws for Sicily.

★ Llywelyn the Great launches a campaign against the Norman lordships in Wales.

Births

★ March 17 - Emperor Shijō of Japan (died 1242)

★ Guo Shoujing, Chinese astronomer and mathematician

★ John de Warenne, 7th Earl of Surrey (died 1304)

★ Roger Mortimer, 1st Baron Wigmore (died 1282)

Deaths

★ April 6 - William Marshal, 2nd Earl of Pembroke

★ June 13 - Anthony of Padua, Portuguese saint (born 1195)

★ November 6 - Emperor Tsuchimikado of Japan (born 1196)

★ November 17 - Elisabeth of Hungary, daughter of Andrew II of Hungary and saint (born 1207)

★ Abd-el-latif, Arab physician and traveller