Phillip Joseph Garrigan was born September 8, 1840 at Cavan, Ireland. He was educated in America at St. Charles' College in Ellicott City, Md. and St. Joseph's Provincial Seminary in Troy, N. Y. After graduating from seminary he was ordained a priest on June 11, 1870. His first assignment was as parish priest at St. John's Church in Worcester, Massachusetts, where he served from 1870 - 1873. He was then vice president of St. Joseph's Seminary.
Father Garrigan's longest assignment as a parish priest was at St. Bernard's Church in Fitchburg, Massachusetts. He served there from 1875 to 1888. After that he became vice-rector of the Catholic University of America, in Washington, D.C., where he served through the start of the 20th Century.
On January 15, 1902, Pope Leo XIII created the Diocese of Sioux City by separating twenty-four frontier counties in northwest Iowa from the Archdiocese of Dubuque. Phillip Garrigan was appointed Bishop of Sioux City on March 21, 1902, and he was ordained a bishop on May 25, 1902. He served the Diocese of Sioux City until he died on October 14, 1919.
(This information is from the Diocese of Sioux City and RC Net.)