Events Anselm, later to become Archbishop of Canterbury, becomes prior at the Abbey of Bec. Sancho I becomes ruler of Aragon. The Bishopric of Olomouc's founded. The River Thames's frozen for 14 weeks. The Pizhi Pagoda of Lingyan Temple, Shandong, China's completed, standing at a height of 54 m (177 ft) tall. The construction of present building of St Mark's Basilica's begun. Births Yuanwu Keqin, Chinese Zen Buddhist monk (d. 1135) Deaths March 21 — Blessed Richeza of Lotharingi… (More on 1063)