By 1200 AD some Armenians came to accept the authority of the Roman Catholic pope. In 1742 they formed the Armenian Catholic Church, with a patriarch residing at Beirut, Lebanon. Armenian Protestantism began with the arrival of American Congregationalist missionaries from Boston in 1830. | By 1200 AD some Armenians came to accept the authority of the Roman Catholic pope. In 1742 they formed the Armenian Catholic Church, with a patriarch residing at Beirut, Lebanon. Armenian Protestantism began with the arrival of American Congregationalist missionaries from Boston in 1830. |