Flag of the Church in Wales blue cross with a white background with a gold celtic cross in the centre. The flag gained official status on 9 December 1954. The official grant of arms defines the flag as "Argent, on a Cross Azure a Celtic Cross Or". There have been differences in the celtic cross in the flag with versions where the cross has the spaces within it filled with gold rather than showing the blue of the cross. As a flag for the Welsh made separate from England, the flag of the Church in Wales is viewed as a uniquely Welsh flag. Churches can use
Flag of the Greek Orthodox Church of the Byzantine Empire. The double-headed eagle was historically used as an emblem in the late Byzantine period (14th–15th centuries), but not on flags; rather it was embroidered on imperial clothing and accoutrements by both the Palaiologos emperors of the Byzantine Empire and the Grand Komnenos rulers of the Empire of Trebizond, descendants of the Byzantine imperial family of the same name. The actual flag of the Palaiologan-era Byzantine Empire was based on the tetragrammatic cross in gold on a red background. This design also forms the basis for another flag used by the Orthodox Church of Greece, with the