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In Loving Memory

Dennis M. Mahoney

January 18, 1935 - August 24, 2021

Dennis M. Mahoney, age 86, passed away on August 24, 2021 at home, in the comfort of his wife of 58 years, LaVonne B. Mahoney. Denny was born on January 18, 1935 in York, Pennsylvania, the son of Charles D. Mahoney and Marjorie D. Mahoney.


After attending Duke University and Temple medical school, Denny moved to Colorado to complete his medical training in obstetrics and gynecology. While working at Presbyterian Hospital in Denver, Denny met and fell in love with LaVonne Bridges, a laboratory technician from Meade, Kansas. They were married on December 15, 1962.


Shortly thereafter, Denny served for two years, 1963-65, as a Captain in the U.S. Army Medical Corps, delivering hundreds of babies. During that time, Denny was called upon to testify as an expert witness in military judicial proceedings. He found the experience fascinating and compelling, and two weeks after his discharge from the army, Denny entered law school at Penn State Dickinson.


Denny continued to practice medicine while he completed law school. After graduating from law school in 1968, he and LaVonne moved back to Colorado, which Denny referred to as “God’s country.” They have lived here ever since.

Denny practiced law for 53 years, specializing in medical litigation. He was passionate about bringing his expertise to the cause of his clients. Denny was particularly intense in his advocacy for the rights of babies and children. He founded The Mahoney Law Firm, P.C., which continues his mission today.


Denny and LaVonne raised four sons. Denny was a devoted husband and loving father, always placing his family as his top priority. In wintertime, he could be found on the ski slopes of Breckenridge, chastising Texans to stay off the expert runs. In springtime, he could be found prowling the sidelines of his sons’ lacrosse games, “working” the refs.


Never shy with his analysis or opinion, Denny was well known for both his joy in the successes of his family, and his disdain for an opposing team or unsavory politician. He was known for telling good stories. He would sometimes embellish what may have actually happened for dramatic effect or to emphasize a point, oftentimes with a wink and a smile.


Denny is survived by his wife, LaVonne B. Mahoney; his four sons, Chuck (Jenna), Paul (Rita), Kevin (Andrea), and Bo (Amanda); and his sister, Marjann Bower. He is also survived by thirteen grandchildren: Connor,

Cameron, Lindsay, Luke, Caroline, Mariah, Sean, Phelan, Bricin, Caitlin, Jack, Emma, and Paige.


Denny is preceded into eternal life by his parents, Charles D. Mahoney and Marjorie D. Mahoney, and his brother, James C. Mahoney.


A funeral mass will be held on September 9, 2021 at 10:00 a.m. at St. Vincent de Paul Catholic Church, 2375 E. Arizona Ave., Denver, CO 80210. A reception will follow at the home of Bo and Amanda Mahoney, located at 3136 S. Steele St., Denver, CO 80210.


Denny will be laid to rest at Fort Logan National Cemetery in Denver, Colorado. In lieu of flowers, the family requests that you consider a donation in Denny’s name to one of his favorite causes:


Wounded Warrior Project

P.O. Box 75816

Topeka, KS 66675




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