Robert L. Theriault, 80, of North Windham, died peacefully at home on March 6, 2026. He is survived by his son Kevin Theriault (Cara), of Storrs, CT and his Daughter Lisa Classen (Bill), of Ellington, CT. He is also survived by his grandchildren; Joshua Theriault (Melinda) of Maine, Alyssa Dubicki (Joseph) of South Windsor, CT, Ryan Dubicki (Jennette) of Coventry, CT and Gregory Licata of Windham, CT. Additionally, he leaves behind his brother Richard Theriault (Anne) of Ashford, CT. He was predeceased by his parents Leo Theriault and Grace (Landry) Theriault. Robert was a graduate of Windham Regional Technical High School class of 1964. He followed in his father’s footsteps and became a Willimantic Firefighter retiring after 28 years in 1995. He founded and owned Bob’s Lawn and Yard service for many years until he sold it in 2010. He was a Life member and Past President of the Fin, Fur & Feather Club in Chaplin, CT, A member of the Willimantic Elks Lodge #1311 and The Windham Fish and Game Club. There will be no calling hours. A Celebration of Life will be held on June 28, 2026 from 12:00pm to 4:00pm at the Fin, Fur & Feather Club. In lieu of flowers, donations can be made to the Fin, Fur & Feather Club Land Fund, 213 Chewink Road Chaplin, CT 06235.