Cover for MaryLou Costello's Obituary

MaryLou Costello

Mar 23, 1940 — Nov 6, 2026

MaryLou Costello

A woman of deep faith, strong Irish roots, and an unwavering love for her family, MaryLou passed away peacefully following a courageous battle with cancer.

Beloved wife of the late John Costello. Loving mother of the late Mary and Nancy Costello, Kathleen Costello, and Sheila McGaffigan and her husband, John.

She was a devoted Nannie to Molly Grew and her husband, Tim; Hannah Johnson and Megan, Jack, and Michael McGaffigan. She was also the proud great-Nannie of Grace and Jackson Grew.

Daughter of the late James and Agnes Moore. Sister of Kathleen Lundy and her late husband, Bill; the late Peggy Nesbitt and her late husband, Bob; and the late Jimmy Moore. Sister-in-law of the late Mary and Tom Maloney and Joe and Kay Costello. She is also survived by many nieces and nephews.

Funeral Arrangements

Family and friends are invited to attend visiting hours on Monday, November 16, from 10:00–11:30 a.m. at C.C. Shepherd, 134 Pleasant Street, South Weymouth.

A Funeral Mass will follow at 12:00 p.m. at St. Francis Xavier Church, 234 Pleasant Street, South Weymouth.

Interment will take place at 2:00 p.m. at the Massachusetts National Cemetery in Bourne.

In lieu of flowers, donations in her memory may be made to the Mary and Nancy Costello Fund, Inc., 75 East St. West Bridgewater, MA. 02379

To send flowers with our preferred florist or plant a memorial tree, please visit our flower store.

Service Schedule

Upcoming Services

Visitation

Monday, November 16, 2026

10:00 - 11:30 am (Eastern time)

C. C. Shepherd Funeral Home

134 Pleasant St., Weymouth, MA 02190

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Funeral Service

Monday, November 16, 2026

Starts at 12:00 pm (Eastern time)

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Interment

Monday, November 16, 2026

Starts at 2:00 pm (Eastern time)

Massachusetts National Cemetery

Connery Ave, Bourne, MA 02542

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Guestbook

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