Glenna Elaine Mantz, age 74, of Joppatowne, Maryland, passed away peacefully on Saturday, May 16, 2026. Born in Baltimore, Maryland, Glenna was the beloved daughter of the late Henry Edgar Phillips and Stella May (Miller) Phillips.

Glenna was the devoted wife of Thomas Joseph Mantz Sr. with whom she lovingly shared 56 years of marriage. Family was everything to Glenna, and she dedicated her life to caring for and supporting those she loved most. She was a wonderful cook whose holiday dinners brought family together and created cherished memories for generations. Glenna enjoyed collecting Barbies, sewing, homeschooling her grandchildren, performing tax preparations for her many adored clients, and being an avid reader, she enjoyed her trips to the library.

In addition to her husband, Glenna is survived by her loving children, Thomas Mantz Jr. and companion Lisa Loftus and Theresa Smith and husband Timothy; her cherished grandchildren, Thomas Mantz III and fiancé Faith, Timothy Smith Jr., Victoria Mantz Bibb and husband J.T., and Trista Smith; and her adored great-grandchildren, Mariella and Mia Bibb. She is also survived by her siblings John Phillips, Deborah Smith, and Alice Mabire.

Glenna is preceded in death by sisters, Henrietta "Bootsie" Mayo, Daisy Shore, and Bonnie Van Sickle, and brother Stanley Phillips.

In lieu of flowers, contributions may be made to the Harford County Public Library.

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