Portland- David Archie Theriault, 61, of Portland, Maine, entered eternal rest on September 26, 2022. He was born to Henry A. Theriault and Wilda M. (Pelletier) Theriault in Portland, Maine on January 13, 1961.  David graduated from Portland High School in 1979. He worked as a truck driver most his adult life until he began working for Luca's Tree as an arborist for many years. David enjoyed woodworking, riding his Harley, and was an avid family genealogist for over 38 years with his sister Lisa. He was a jack of all trades; you name it, he did it. He volunteered at the Gorham Food Pantry. David was a Faithful Admiral 4th degree of The Knights of Columbus (Council Number 10221). David and his former wife Penelope (Valliere) Colello raised three children; Mariah Theriault (Ronald Fortier) of Auburn and their children; Gracie, Brian, and Emma. Raeleen Theriault (Hans Mulligan) of Portland and their children Cayden, Keegan, McKenna, and Orin. Sydnee Theriault and her significant other Travis Tripp. David is survived by his mother Wilda (Pelletier) Theriault, of Portland; siblings, Florence (Theriault) Stevens and her husband Michael of Standish, Thomas Theriault and his wife Ann of Gorham, Cynthia (Theriault) Tibbetts and her husband Walter of Waterboro, Marie Theriault of Portland, Lisa Theriault of Portland; and many nieces, nephews, cousins, and friends. As well as his trusty companion dog, Lazy.  David was predeceased by his father Henry A.Theriault (1924-2010) of Portland, Sisters; Carol Pike (1944-2013) of Pennsylvania, and Leeann F. Theriault (1968-1968) of Portland.  A heartfelt thank you from the family to Dr. Devon Evans (NECS) and to the Knights of Columbus for their love and support.  Visitation will be Thursday October 6, 2022 from 4-6 PM at A.T. Hutchins Funeral Home, 660 Brighton Avenue. A Mass of Christian Burial will be celebrated 11:00 AM Friday October 7, 2022 at St. Anne's Catholic Church 299 Main Street in Gorham. Interment will follow in New Calvary Cemetery in South Portland.