recording his travails and ultimate victory, during the Second Tikal-Calakmul War. By topic Astronomy January 3 – Venus occults Jupiter. Literature The first entry is made in the Welsh chronicle Brut y Tywysogion. Religion August 17 – Pope Leo II succeeds Agatho as the 80th pope, after a period of sede vacante ("vacant seat") of a year and 7 months. Births July 20 – Taichō, Japanese Buddhist monk (d. 767) November 2 – Umar II, Muslim caliph (d. 720) Li Chongrun, prince of the Tang Dynasty (d. 701) Deaths Barbatus, bishop of Benevento Bilal ibn al-Harith, companion of Muhammad (approximate date) Zaynab bint Ali, sister of Husayn ibn Ali (b. 626) Bojang, king of Goguryeo (Korea) Buyeo Yung, prince of Baekje (in exile in Luoyang) Cadwaladr, king of Gwynedd (Wales) Cenn Fáelad mac Colgan, king of Connacht (Ireland) Li Jingxuan, chancellor of the Tang Dynasty (b. 615) Maslama ibn Mukhallad al-Ansari, companion of Muhammad Sun Simiao, Chinese medicine doctor Lady K’awiil Ajaw, queen regnant of the Maya city State of Cobá (b. 617) References da:680'erne#682