States), rises (approximate date). The city of Cusco (modern Peru) is founded (approximate date). By topic Religion September 8 – Antipope Clement III dies at Civita Castellana after a 20-year reign in opposition to the legitimate popes Gregory VII, Victor III and Urban II. Supporters of Emperor Henry IV in Rome choose Theodoric as his successor. Frederick I becomes archbishop of Cologne, and begins the construction of the castle of Volmarstein. The Stift St. Georgen Abbey is founded near Sankt Georgen am Längsee (modern Austria). The Diocese of Faroe is founded (approximate date). Technology Checkers is invented (approximate date). Births May 19 – Judith of Bavaria, duchess of Swabia (d. 1130) May 23 – Qin Zong, Chinese emperor (d. 1161) Achard of Saint Victor, Norman bishop (d. 1171) Adrian IV, pope of the Catholic Church (d. 1159) Albert I (the Bear), margrave of Brandenburg (d. 1170) Alexander III, pope of the Catholic Church (d. 1181) Anselm of Havelberg, German bishop (approximate date) Arnold I, archbishop of Cologne (approximate date) Bruno II of Berg, archbishop of Cologne (d. 1137) Eliza and Mary Chulkhurst, English conjoined twins (d. 1134) Elvira of Castile, queen of Sicily (approximate date) Gilbert de Clare, 1st Earl of Pembroke (d. 1148) Héloïse d'Argenteuil, French abbess and scholar (d. 1162) Herman of Carinthia, German astronomer (d. 1160) Hillin of Falmagne, archbishop of Trier (d. 1169) Jabir ibn Aflah, Arab astronomer and mathematician (d. 1150) John of Meda, Italian monk and abbot (d. 1159) Muhammad al-Idrisi, Almoravid geographer (d. 1165) Owain Gwynedd, king of Gwynedd (approximate date) Jacob ben Meir Tam, French Jewish rabbi (d. 1171) Robert de Beaumont, 2nd Earl Leicester (d. 1168) Robert de Ferrers, 2nd Earl of Derby (d. 1162) Robert of Melun, bishop of Hereford (d. 1167) Robert of Newminster, English abbot (d. 1159) Teobaldo Roggeri, Italian shoemaker (d. 1150) Deaths February 23 – Zhe Zong, Chinese emperor (b. 1077) February 25 – Gerland, bishop of Agrigento March 28 – Adelaide of Weimar-Orlamünde, German noblewoman July 18 – Godfrey of Bouillon, French nobleman (b. 1060) July 23 – Warner of Grez, French nobleman August 2 – William II (or William Rufus), king of England September 8 – Clement III, antipope of Rome September 16 – Bernold of Constance, German chronicler October 13 – Guy I (or Wido), French nobleman November 18 – Thomas of Bayeux, archbishop of York December 22 – Bretislav II, duke of