Theresa M. (“Terry”) DeCillis

Greece-Tuesday March 3, 2026 at the age of 95. Predeceased by her husband Patrick. Her parents, Thomas and Rose (O’Neil) Treanor, siblings, Mary, Rose John, Mike, Patty, Betty, Peggy and Bridget.

She is survived by her loving and devoted children, Kathy (Jim) Cvitanovich, Paul (Cynthia) DeCillis, Tom (Sharon) DeCillis and Patty DeCillis. 11 grandchildren, 17 great-grandchildren and 2 great-great grandchildren. Her brother, James Treanor along with many nieces and nephews.

Terry died peacefully in her sleep surrounded by her loving family. She was born in Moore, Montana and raised in Billings. She moved to Rochester to marry the love of her life, Pat. They shared 66 wonderful years together. She lived a full life and enjoyed spending time with family and friends. Especially her grandchildren who affectionately called her “GGma”. She was an expert seamstress and a kind, compassionate registered nurse.

The family would like to thank Rochester Regional Hospice Care for their kindness and exceptional care given to Terry and her family. Especially Joanna, Lenora and Emma.

Terry’s Funeral Mass will be celebrated at 10AM on Wednesday, March 11th at St. Lawrence Church, 1000 North Greece Road. Interment at Holy Sepulchre Cemetery. In lieu of flowers, please consider masses said for the repose of her soul, or donations to the American Heart Association, PO Box 840692, Dallas, TX 75284-0692; St. Jude Children’s Hospital, 501 St. Jude Place, Memphis, TN 38105; or Lollypop Farm, 99 Victor Road, Fairport, NY 14450.