Sister Phyllis McGuire, a devoted Sister of Mercy whose life was marked by faith, compassion, and steadfast service to others, passed away on May 3, 2026, at Overlook Medical Center in Summit, New Jersey. She was 90 years old.

Born on March 31, 1936, to Philip and Nora McGuire, Phyllis was raised with strong roots in her Catholic faith. She attended St. James Elementary School in Woodbridge, NJ, and graduated from St. Mary High School in South Amboy. From a young age, she felt a call to religious life and a deep desire to serve as a Sister of Mercy, a dream she carried in her heart for many years.

Her early adult life was one of service and perseverance. She honorably served in the Navy Reserves from 1956 to 1960. In later years, she worked in various roles, including positions with a Chevrolet dealership, Sears, and as Purchasing Manager at the Newark Star-Ledger. Beyond her many commitments, she found joy in travel, enjoyed the game of tennis, and took great pride in her Irish heritage, which remained a cherished part of her life.

Phyllis experienced both love and profound loss in her personal life. She was married, and though that marriage was later annulled, she cherished her role as a mother. She is survived by her son, David Robert Bialecki. She was predeceased by her beloved daughter, Jennifer, whose death at the tender age of six was a heartbreak that shaped much of Phyllis’s spiritual journey, deepening her reliance on God’s mercy and grace.

In 1989, at the age of 53, Phyllis courageously answered the call she had long carried, entering the Sisters of Mercy from St. Matthew the Apostle Parish in Edison, New Jersey. Her commitment deepened, and at age 60, she joyfully professed her final vows in 1996, embracing fully her vocation as a Sister of Mercy.

Throughout her 36 years as a Sister of Mercy, Sister Phyllis ministered with dedication and compassion. She served in various roles, including as secretary at Mount Saint Mary Academy and as business manager at McAuley Hall Health Care Center. Her most impactful ministry was at Tioga County Rural Ministry in Owego, New York, where she served first as vice president and then as director. There, she became a visible sign of mercy and hope to those in need, advocating tirelessly for the poor and marginalized. In recognition of her extraordinary contributions, she was named the 2008-2009 Woman of the Year by the Owego Lions Club.

In her later years, Sister Phyllis embraced a ministry of prayer and presence. Whether serving in Red Bank, Newark Valley, or back in Watchung, she remained faithful to her calling, offering prayer, encouragement, and volunteer service at McAuley Hall and Riverview Medical Center.

Sister Phyllis will be remembered for her deep faith and her unwavering commitment to the ideals of mercy, compassion, and justice. She lived a life transformed by both suffering and grace, and she shared that transformation generously with all she encountered.

Services will be held at McAuley Hall Health Care Center, 1633 US Highway 22, Watchung, NJ on Friday, May 8, 2026.

Wake: 9:00am

Welcome Home Service: 10:00am

Funeral Mass: 11:00am

Interment will take place at St. Gertrude Cemetery in Colonia, NJ immediately following the funeral Mass.

In lieu of flowers, donations may be made to the Sisters of Mercy, 1645 US Highway 22, Watchung, NJ, 07069.