Saint Patrick's Church. Established 1833 by Bishop Leo de Neckère, C.M. This church, completed in 1840 during the pastorate of Father James I. Mullon, is the oldest parish church outside the French Quarter. In 1850 St. Patrick's served as Pro-Cathedral while the St. Louis Cathedral was undergoing reconstruction. Here Bishop Antoine Blanc received the Pallium as first Archbishop of New Orleans on February 16, 1851. St. Patrick's is regarded as the mother church of uptown New Orleans. Archdiocesan Bicentennial Commission.