from the Synaxarion:
The Monk Zakharios, Patriarch of Jerusalem, lived from the end of the 6th to the early 7th century. In the year 614 the Persian emperor Chosroes fell upon Jerusalem, looted it, and led into captivity many a Christian, including also Saint Zakharios. Together with his captives, Chosroes seized also the Life-Creating Cross of Christ. During the time of the invasion as many as 90,000 Christians perished. Afterwards Chosroes was compelled to sue for peace with the Byzantine emperor Heraclius (610-641). The Cross of the Lord was returned to Jerusalem. The Christian captives that yet remained alive also were returned, among them Patriarch Zakharios, who died peacefully in the year 633.