Dennis Rene Trefelner

Dennis “Denny” Rene Trefelner, a lifelong Floridian known for his adventurous spirit, skilled craftsmanship, and deep love for his family, passed away surrounded by the love of those closest to him. Born in Pennsylvania in 1953, Denny moved to Florida with his parents and family in 1955 as they pursued opportunities in the construction industry, where the family would build strong roots and lasting memories.

Denny attended St. Anastasia Catholic School, Dan McCarty High School, and Indian River Community College. He studied electronics and drafting but ultimately found his true passion in carpentry and woodworking. He dedicated much of his life to the construction trade through Trefelner Construction and later Dennis R. Trefelner Carpentry, where his talent, work ethic, and pride in craftsmanship were evident in every project he touched.

Throughout his life, Denny embraced adventure and lived fearlessly. In his younger years, he participated in several Soap Box Derby races and bowled alongside his father and brothers in Knights of Columbus bowling leagues and tournaments throughout the 1970s and early 1980s. He enjoyed boating, deep-sea fishing, riding his Harley, camping, woodworking, and flying as a licensed private pilot during the 1990s. He was a past member of the Knights of Columbus, Elks BPOE 1520, and Sons of the American Legion Post 39.

Denny will be remembered as fun-loving, fearless, and full of life. Above all else, he treasured his family. His children, grandchildren, and great-grandchildren brought him endless pride, joy, and laughter throughout his life.

He is lovingly survived by his son, James Trefelner (Rachel); daughters, Melanie Caglioni (David) and Jennifer Trefelner of Dugger, Indiana; former spouse and mother of his children, Vickie Trefelner; and former spouse and life partner, Angi Trefelner.

He also leaves behind his cherished grandchildren: Jessica Krueger (Zach), Colton DiFrancesco (Emily), Jayme Ancewicz (Vincent), Mikayla Serrichio (Mike), Kyle Caglioni, Tristen Trefelner (Lexi), Chase Trefelner (Yasmin), Alexandria “Allie” Holcomb (Steven) of Hobe Sound, Florida, Kody McDow (Devan) of Inverness, Florida, Nadia Rivera (Matt), Benjamin “Jun” Rivera of Tampa, Florida, Gabrielle Trefelner (Kyra), Dennis “DJ” Trefelner, and Kayla Kuper (Charles).

Denny was blessed with many great-grandchildren who brought light to his later years: Ava Krueger, Avery Krueger, Sawyer DiFrancesco, Benjamin Ancewicz, Beau Ancewicz, Emma Trefelner, Addison Trefelner, Carson Trefelner, Mila Trefelner, Cade Trefelner, Tyde Spuler, Declan Shaw, Kynlee McDow, Brian McDow, Genevieve “Vivvy” Trefelner, Sebastien “Bash” Trefelner, and Haven Kelly.

He was preceded in death by his beloved son, Dennis Rene Trefelner, Jr.; his sister, Cynthia Louise “Cindy Lou” Trefelner; his brothers, R. Dale Trefelner and Timothy Trefelner; his father, Regis “Dee” Dale Trefelner; and his mother, Genevieve “Honey” Trefelner Smith.

Denny’s memory will live on through the countless stories shared by family and friends, the lessons he passed down through his work and hobbies, and the love he gave so freely throughout his life.

A visitation will be held on Sunday, June 7, 2026 at Haisley Funeral Home, Fort Pierce from 5:00 PM - 7:00 PM. A Mass of Christian Burial will be held on Monday, June 8, 2026 at St. Anastasia Catholic Church, Fort Pierce at 10:00 AM with inurnment at Hillcrest Memorial Gardens to follow.

In lieu of flowers, memorial contributions may be made to Treasure Coast Hospice in honor of Denny’s memory.