the basis of a multi-religious Islamic state, and begins construction of the Al-Masjid an-Nabawi Mosque. Later during the caliphate of Umar in 638, the lunar year during which the emigration to Medina occurred (Friday 16 July 622 – 4 July 623) is designated "Year One" of the new Hijri era (Anno Hegirae – AH). Xuanzang is fully ordained as a Buddhist monk at the age of 20. Births Al-Mukhtar, Islamic revolutionary (d. 687) Bavo, Frankish nobleman and saint (d. 659) Mezezius, Byzantine usurper (d. 669) Uqba ibn Nafi, Arab general (d. 683) Xue Yuanchao, official of the Tang dynasty (d. 683) Deaths April 8 – Shōtoku, prince and regent of Japan (b. 574) Andronicus, Coptic Orthodox Patriarch of Alexandria Colmán mac Cobthaig, king of Connacht (Ireland) John of Biclaro, Visigoth chronicler (approximate date) Li Zitong, rebel leader during the Sui dynasty Lin Shihong, rebel leader during the Sui dynasty Liu Wuzhou, rebel leader during the Sui dynasty Walid ibn al-Mughirah, chief of the Banu Makhzum clan of the Quraysh tribe. References Sources