Mary Ellen O'Brien (nee Duffy),of Bala Cynwyd, PA., passed away on Sunday November 26, 2017.  She was 97.

Daughter of the late Robert and Mary Dwyer Duffy, she was born on November 6, 1920 in Philadelphia, PA.

Mary was the beloved wife of the late William F. O'Brien.  Dear sister of the late Robert J. and Joseph Duffy.  She is survived by her nieces Diana Duffy and Sally Duffy and her grand nieces Kelly & Megan Duffy.

Relatives and friends are invited to her Funeral Mass Tuesday December 5, 10 AM at St. Matthias Church, 128 Bryn Mawr Ave., Bala Cynwyd, PA.  Interment will follow in Calvary Cemetery.

In lieu of flowers, memorial donations may be made to Juvenile Diabetes Research Foundation, 26 Broadway, 14 ^th Floor, New York, NY 10004.