The Diocese of Monterey was generated by the seed of faith planted by Franciscan Friar, Blessed Junipero Serra, when he founded the Mission of San Carlos
The Diocese of Harrisburg established March 3, 1868, comprises the counties of Adams, Columbia, Cumberland, Dauphin, Franklin, Juanita, Lancaster, Lebanon, Mifflin, Montour, Northumberland, Perry, Snyder, Union and York in the State of Pennsylvania