Theresa J. Stammer, 84, of Lancaster, passed away peacefully, Saturday, March 4, 2017, at Lancaster General Hospital. Theresa was a lifelong resident of Lancaster County and was the daughter of the late Domenick & Jennie (Madonna) Martell. She now joins her loving husband, Anthony G. Stammer, who died in 2015. Theresa was a faithful parishioner of St. Mary's Catholic Church. She loved travelling with her husband and visited many places including: Japan, Guam, Switzerland, the Bahamas, Hawaii, and traveled extensively throughout the United States. She also loved to play Bingo and Pinochle. Theresa is survived by her siblings: Victor Martell, of Mount Joy; Anne Marie Martell, of Lancaster, and Lucy Cartledge, of Gap. She is also survived by many nieces and nephews, and a great-niece and great-nephew. A Mass of Christian Burial will be celebrated at 10AM, Thursday, March 9, 2017, at St. Mary's Catholic Church, 119 S. Prince St., Lancaster, PA 17603, with Rev. Leo M. Goodman, III, as Celebrant. Family and friends will be received for a viewing from 9-10AM at the church prior to Mass. Theresa will be laid to rest at St. Anthony Catholic Cemetery, alongside of her husband. In lieu of flowers, contributions in Theresa's name may be made to: "The Legacy Project," the building improvement fund of St. Mary's Catholic Church, at the address above.