Leo Joseph Cain III

Born in Somerville, Massachusetts, in 1956 to Ann (Barry) Cain and Leo J. Cain II, Leo was shaped early by values that defined his life: honesty, hard work, perseverance, and an unwavering commitment to family. He graduated from Don Bosco Technical High School in 1974 where he was a three sport varsity athlete in basketball, football, & baseball. He went on to build a career and reputation that reflected those principles every day.

For more than 30 years, Leo was a proud member of Boston Local 33, working in the construction trade and earning the respect of coworkers through his skill, dependability, and tireless work ethic. For much of that time, he made the long daily commute from Dennis to Boston, never complaining and never looking for an easier path when it came to providing for his family.

Following his construction career, Leo spent 14 years working at Cape Cod Technical High School before retiring in 2020.

Retirement gave Leo the opportunity to slow down, but it never changed who he was. Though he could have spent every winter relaxing on a beach in Florida, he chose instead to remain on Cape Cod because it was where his family was happiest. It was a decision entirely consistent with the way he lived his life. Leo never put himself first; he found his greatest happiness in taking care of the people he loved.

Leo was the beloved husband of Patricia (Coogan) Cain, whom he married in July 1984. Together they built a life filled with love, loyalty, laughter, and unwavering devotion for more than forty years.

He was the proud father of Leo J. Cain IV of Chatham and Boston, Massachusetts. Nothing meant more to him than being a father. He loved watching his son play hockey and baseball and took pride in every milestone and accomplishment throughout his life.

In October 2025, when his son was diagnosed with Acute Promyelocytic Leukemia (APL), Leo stood by his side through every challenge of an eight-month journey that no father should ever have to endure. Through countless appointments, treatments, setbacks, and victories, he remained a source of strength, encouragement, and unwavering support. His son credits him with helping him survive the battle and complete treatment successfully. Just days before Leo's passing, father and son celebrated the successful conclusion of that journey together.

Leo also cherished time spent with Washington, his son's beloved 130-pound bloodhound, a dog that only a select few people could confidently walk and handle. Whether spending time with family, enjoying a day at the beach, or lending a helping hand to someone in need, Leo was happiest when surrounded by those he loved.

There seemed to be nothing Leo could not fix. Armed with a toolbox, determination, and a never-quit attitude, he approached every challenge with confidence and ingenuity. Family, friends, neighbors, and coworkers all knew that if something was broken, Leo would find a way to make it work again. More importantly, if someone needed help, Leo was there.

Those who knew him will remember a man of remarkable character. He was honest, transparent, dependable, and hardworking. He was the person people turned to when they needed advice, a solution, or simply someone they could count on. He was an anchor during life's storms and a life raft whenever someone needed saving.

Leo leaves behind his beloved wife of more than four decades, Patricia Cain; his son, Leo J. Cain IV, sisters Mary Eno, Ann-Marie McIsaac, Susan Harney, & brother Kevin Cain.

He also leaves behind many relatives and friends whose lives were made better by knowing him.

Visiting hours will take place on Friday, June 19, 2026, from 10-11 AM at Our Lady of the Cape, 468 Stony Brook Rd, Brewster, MA 02631 immediately followed by an 11 AM Mass. Family and friends are invited to join in fellowship and remembrance at the Church Hall where light refreshments and food will be served. Burial will be private.

While his passing leaves an immeasurable void, his legacy lives on in the values he embodied, the family he loved so deeply, and the many lives he touched through his kindness, generosity, and quiet strength.

He will be deeply missed, forever loved, and never forgotten. He is now reunited with his parents and is with God.