1138 deaths

Abū Bakr Muḥammad ibn Yaḥya ibn aṣ-Ṣā’igh at-Tūjībī ibn Bājja (), known simply as Ibn Bajja () or his Latinized name Avempace (;  – 1138), was an Arab polymath, whose writings include works regarding astronomy, physics, and music, as well as philosophy, medicine, botany, and poetry.

duke of Poland between 1107 and 1138

antipope 1130 to 1138

Empress consort of the Byzantine Empire

Abbasid caliph in Baghdad (r. 1135–1136)

Yemeni queen and ruler (c. 1048–1138)

Russian prince and saint

second Isma'ili ruler of Alamut

Moorish writer

Count Reinhausen, Winzenburg, Windberg and Radelberg, Landgrave of Thuringia, and Margrave of Meissen

12th-century Anglo-Norman nobleman

Song dynasty person (CBDB = 8004)

Dutch noble

Older brother of Bernard of Clairvaux

Vietnamese emperor

the castellan and lord of Ramla in the Kingdom of Jerusalem from 1106 to his death

King of the Western Chalukya Empire

King of Munster

Italo-Norman noble

Austrian nobleman

Wallon monk, cleric, musicologist and composer

Ruler of Asturias

son of David IV of Georgia