- St.Comgalls Roman Catholic Church is situated on the Millisle Road in Donaghadee. It belongs to the Parish of Bangor, in the Diocese of Down and Conor. Our new chapel was opened and dedicated on November 13th, 1977. Until the original St.Comgalls was built, in the early 1840's, Mass was often said in the house of a parishioner, however the community continued to grow and in the mid 1930's the ...www.donaghadee2000.freeserve.co.uk/stcomgallschurch.htm