Rev. Mr. David P. O’Brien to Be Ordained to the Priesthood by Archbishop Chaput

The Ordination Mass will be streamed live at and broadcast via Facebook Live at

The Rev. Mr. David P. O’Brien, 27, son of Mr. David and Mrs. Bonnadette O’Brien, will be ordained to the Priesthood by Archbishop Charles J. Chaput, O.F.M. Cap.  

Saturday, May 18, 2019
10:00 a.m.
Cathedral Basilica of Saints Peter and Paul
18th Street and Benjamin Franklin Parkway
Philadelphia, PA 19103

A native of West Brandywine, PA, Rev. Mr. O’Brien has been serving as a transitional deacon at Saint Andrew Parish in Newtown, PA, for the past year. He attended Saint Joseph Parish School (2006) and Bishop Shanahan High School (2010) in Downingtown, PA. He earned his Bachelor of Arts (2014), his Master of Divinity (2018) and his Master of Arts (2019) Degrees from Saint Charles Borromeo Seminary, Wynnewood.

Father O’Brien will celebrate his First Solemn Mass of Thanksgiving on
Sunday, May 19, 2019
3:00 p.m.
Saint Peter Parish Church
2835 Manor Road
West Brandywine, PA 19320 (Chester County)

There are seven men from the Archdiocese of Philadelphia in the Ordination Class of 2019.


Editor’s Note: The newly ordained priests will be assigned, at the conclusion of the Ordination Mass, to an Archdiocesan parish where they will serve as parochial vicars. A parochial vicar is a priest appointed by the Archbishop to assist the pastor of a parish.

If you would like to receive a photograph of Father O’Brien, please contact the Office for Communications at 215-587-3747 or email  


Jhoselyn Martinez
Communications Specialist
215-587-3747 (office)