Mary Loretta O'Riordan, 99, of Philadelphia, died on Thursday, October 18, 2018.  She was the beloved daughter of  the late Frank and Katherine Kilgallon O'Riordan and the dear sister of Anne E. O'Riordan, Catherine C. Dillman (James), John F. O'Riordan (Patricia Loftus),  and James J. O'Riordan (Dorothy Schweickhardt), all of Philadelphia, and of Dr. Joseph P. O'Riordan (Dr. Anna Connor O'Riordan) of Warminster, Pa.  All  her sisters and brothers and their spouses died before her.   She is survived by her 22 nieces and nephews and their 51 children and 26 grandchildren.  Family, friends, and members of St. Jerome's Church are invited to attend her funeral Mass on Saturday, October 27, 2018 at 10:00 a.m. at St. Jerome's Church, 8100 Colfax Street, Philadelphia, Pa .  Friends may call at the church at 9:00 a.m.  Interment in Calvary Cemetery, Conshohocken, Pa.  Contributions in memory of Mary may be made to St. Francis Inn, 2441 Kensington Avenue, Philadelphia, PA 19125 . or at stfrancisinn.org .