Throughout the world knights and dames participate in the spiritual activities of the Order. This includes regular attendance at mass especially on key feast days such as Saint George (23 April) and the Glorification of the Cross (14 September.
On occasions the Constantinian Order, headed by the Grand Master and his wife, TRH The Duke and Duchess of Castro, (above & below) participate in major Order events in the Vatican City and presided over by the current Pontiff and his predecessor, Pope John Paul II as well as through Italy.
The Chapel of the Constantinian Order in Great Britain is situated in the Pro-Cathedral Church of Our Lady of Victories in Kensington, London. Investitures and Masses are also held at Westminster Cathedral in Central London presided over by the Prior, His Eminence Cormac, Cardinal Murphy-O’Connor or Sub Prior, Archbishop George Stack. On important occasions, such ceremonies are conducted personally by the Grand Master, His Royal Highness The Duke of Castro.
The senior Dame of the British and Irish Delegation is Her Royal Highness Princess Michael of Kent.
Knights and Dames of the Sacred Military Constantinian Order also regularly join together with members of the Royal Order of Francis I, in actively involving themselves in inter-church and inter-faith dialogue. Both Orders of Knighthood recognise those that contribute to this important activity.
The Holy Father, Pope Benedict XVI has, like his immediate predecessors, made such dialogue and understanding a key priority of his pontificate. All activities, which encourage dialogue and understanding between Christian churches, as well as with the Muslim and Jewish faiths, are key spiritual activities of the British and Irish delegation as well as in other geographical areas where the Constantinian Order is present. Recent inter-religious activities have taken place in Italy, the United Kingdom, Ireland, Syria, Lebanon, Jordan, Yemen, Morocco, Egypt, Portugal, Bulgaria, Greece, Panama, Costa Rica and Gibraltar.
In November 2003, the Order in Great Britain and Ireland witnessed the investiture of His Grace Dr Rowan Williams, Lord Archbishop of Canterbury and Primate of the Anglican Communion, and His Eminence Archbishop Gregorios of Thyateira and Great Britain of the Greek Orthodox Church (left), into the Royal Order of Francis I.
In November 2006, His Beatitude Patriarch Gregorios III of Antioch & all of the East, of Alexandria, and of Jerusalem, was invested into the Constantinian Order to the grade of Ecclesiastical Knight Grand Cross of Grace. The Patriarch also received the Gold Benemerenti Medal of the Constantinian Order in recognition of his interfaith activities across the Middle East.
Patriarch Gregorios III is one of the principal Christian leaders of the region and has devoted his entire lift to the work of interfaith relations in the region.