Dennis L. B. Duffy peacefullypassed away on Sunday, April 24, 2022 at home with his family. Dennis wasborn in Sacramento, CA on August 28, 1942 and grew up in Carmichael, CA. He attended La Sierra High School and joined the United States Marine Corps after graduation serving from 1960-1966 (3 years active and 3 years in the reserves.) Although being with his family was his first love, he also enjoyedplaying golf, his love of books,riding his dirt bike and fishing and hiking throughout the Sierras with lifelong friends. In his younger days he also enjoyed racing his 1963 Corvette thathebuilt. He was very generous with his time as a mentor and teacher to anyone who wanted to learn, whether it be technical or mechanical. He is survived by his wife of 58 years, Dorothy (Sims) Duffy, his daughter Denise (Duffy) Montgomery, son-in-lawDon Montgomery, sister Connie (Barker) Blanchard and her husband John, brotherGary Barker and his wife Judy and many special family members. His extended family, close friends and neighbors knew him for his sense of humor and big heart. He will be missed by many. A Celebration of Life and military honors ceremony will be held on July 24, 2022 at the Mission Oaks Community Center at Gibbons Park located at 4701 Gibbons Dr., Carmichael, CA 95608. (916) 488-2810. Ceremony at 2:00pm followed by memory sharing and refreshments. Family, friends, neighbors and anyone who was associated with Dennis' treatment or care are welcome. In lieu of flowers, the family requests that donations be made in Dennis' name to the Triumph Cancer Foundation at www.triumphfound.org or to The Greater Sacramento Prostate Cancer Support Group by noting Prostate Support Group with the donation at www.supportmercyfoundation.org/donate or by mail to Mercy Foundation, 3400 Data Dr., Rancho Cordova, CA 95670.