Marie P. Brennan-Guerrera of Montgomery County, PA, passed away, suddenly, on Sunday, June 28, 2020, at the age of 68, with her husband by her side. She was born to Martin F. Brennan and the late Patricia Agnes Brennan (Poetsch) on December 10, 1951 in Philadelphia.

Marie is preceded in death by her daughter, Angel Guerrera (Ethridge). She is survived by her husband and best friend of 48 years, Anthony (Tony) Guerrera.  Loving mother of Tony Guerrera (Jen), Missy Garvin (Dan), and Kathleen Brady (Ernie).  Dearest Mom-Mom to Amanda, Ryan, Jordan, Casey, Gabriella, Gavin, Olivia, and Jack.  Dear sister of Patricia Kavanagh, Martin Brennan, Robert Brennan, Kathy Reidy, and Colleen Brennan.  She is also survived by many loving aunts, uncles, nieces, nephews, cousins, and dear friends.  Marie was a longtime employee of Hair Havoc Salon, Holy Family University, and Princeton Theological Seminary.

Relatives and friends are invited to her Visitation on Saturday, July 18 from 9:00am-10:45am at Christ the King Church, 3205 Chesterfield Road, Philadelphia, PA.,19114. Her Funeral Mass will follow at 11:00am.  In lieu of flowers, donations can be made in her name to the Delaware Valley Chapter of the National Ovarian Cancer Coalition (NOCC).  The family would like to thank Einstein Hospital-Montgomery County for their care, compassion, and effort during Marie's final days.