sentences:  He received a Licentiate in theology from the Pontifical Gregorian University in Rome and later earned a doctorate in canon law from Catholic University.Hannan was ordained a priest of the Archdiocese of Baltimore-Washington by His Excellency, The Most Reverend Ralph Hayes, rector of the Pontifical North American College (and later bishop of the Diocese of Davenport, Iowa)
  on the Solemnity of the Immaculate Conception, December 8, 1939.The newly ordained Hannan remained in Rome until the following summer (1940), when all American seminarians were ordered to leave by the U.S. Secretary of State to maintain their personal safety.