Pope Francis has appointed Auxiliary Bishop Mark E. Brennan of Baltimore to head the Diocese of Wheeling-Charleston, West Virginia.

A native of Boston, Bishop Brennan, 72, has been a Baltimore auxiliary since his episcopal ordination Jan. 19, 2017.

In West Virginia, he fills the vacancy left by the resignation of Bishop Michael J. Bransfield last September; he turned 75 Sept. 8, 2018, the age at which canon law requires bishops to turn in their resignation to the pope. When Pope Francis accepted his resignation Sept. 13, 2018, he left under a cloud of allegations of sexual and financial misconduct. The same day Pope Francis named Baltimore Archbishop William E. Lori apostolic administrator of the statewide diocese.

Bishop Brennan's appointment was announced July 23 in Washington by Archbishop Christophe Pierre, the Vatican nuncio to the United States.

Bishop Brennan earned a bachelor of arts degree from Brown University in Providence, Rhode Island, in 1969. He pursued seminary studies at Christ the King Seminary in Albany, New York, 1969-1970. In 1972, he received a licentiate in sacred theology from the Pontifical Gregorian University in Rome, 1972; he also earned a graduate degree from the Gregorian in 1974.

He was ordained a priest for the Archdiocese of Washington May 15, 1976.

In his 41 years as a priest in this archdiocese, he had been pastor at St. Martin of Tours Parish in Gaithersburg and at St. Thomas Apostle Parish in Washington and had served as the archdiocese’s director of priest vocations and as a parochial vicar at several parishes. In recent years, he was known for his leadership of St. Martin’s, a large multicultural parish, where he celebrated Masses in English, Spanish and French.

In 2016, reflecting on his vocation when he marked the 40th anniversary of priestly ordination, then-Msgr. Brennan told the Catholic Standard that he felt an "overwhelming sense of God's faithfulness. … The Lord is always there for me, giving me the help I need."

When he was named an auxiliary bishop for Baltimore in December of that year, he said he was humbled by the appointment "at this stage in my life and being simply a parish priest."

The Diocese of Wheeling Charleston has about 78,000 Catholics, or 4 percent of a total state population of over 1.8 million people.