Jacqueline “Jackie” A. O’Brien

Jacqueline A. O’Brien (nee McCallion), 79, of Williamstown; formerly, of South Philly, passed away peacefully on Friday, May 22, 2026, at Juniper Village, surrounded by her loving family.

Jackie was a devoted wife, mother, grandmother, sister, and friend who cherished the time she spent with her family. She was known for her caring heart, strength, and dedication to those she loved most. Jackie enjoyed creating lasting memories with her children and grandchildren and found her greatest joy in family gatherings and special moments together especially her cousins weekends.

Predeceased by her beloved husband, Peter O’Brien Jr. She was also predeceased by her siblings, Helen Smith, Thomas McCallion, Catherine Krecko, and Arthur McCallion.

Jackie is survived by her loving children, Dawn Abbott (John), Jacqueline O’Brien, and Peter O’Brien III (Kelly); her cherished grandchildren, Alexander Abbott, Nicole Abbott, Peter O’Brien IV and Hannah O’Brien; and her dear sister, Betty O’Kane. She is also survived by many loving extended family members and friends who will miss her dearly.

Family and friends are invited to attend her viewing on Saturday, May 30th from 9:30 – 10:30 AM at Our Lady of Peace Parish – St. Mary’s R.C. Church, 32 Carroll Ave., Williamstown. Mass of Christian Burial will be celebrated 10:30 AM. Interment St. Mary’s Cemetery, Williamstown.

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