LOUGHLIN, John, R. C. bishop, born in County Down, Ireland, in 1816. He emigrated to the United States in early youth, settling in Albany, New York, was educated at Mount St. Mary's college, Emmettsburg, Maryland, taught there several years, and in 1842 was ordained priest in the Roman Catholic church. He was assistant priest in St. Patrick's cathedral, New York city, in 1841-'4, at the latter date became rector, and, on the formation of the diocese of Brooklyn, was consecrated its first bishop in November, 1853. He introduced the Sisters of St. Joseph and Sisters of Mercy in 1855, established churches throughout Long Island, and in 1868 began the erection of the Brooklyn cathedral. He has been a member of two plenary councils, and has held a diocesan synod for the purpose of establishing the decrees of the councils.