Mary Frances Kelleher

Mary Frances Kelleher, née Cronin, died peacefully in San Diego, California, on August 31, 2026, at the age of 100.

She was born March 10, 1926, in Wilmington, Delaware, the seventh of eleven children of Jeremiah Cronin and Julia Sullivan Cronin, immigrants from Ireland.

She grew up in the Forty Acres, then a heavily Irish neighborhood of Wilmington. She was one of eight girls and three boys. Two of her sisters became nuns for the Catholic Church. Mary Frances was the last living sibling of the eleven and the longest-living member of her family.

After high school, she worked for several years as a switchboard operator for Diamond State Telephone Company. Through mutual neighborhood friends, she met the love of her life, Robert F. Kelleher, a salesman for the Hercules Powder Company. They married in 1953.

Over the next ten years they had six children, all boys, and lived in five cities, as her husband’s job required frequent transfers up and down the East Coast. The children were born in Boston; Atlanta; Pittsburgh; and Birmingham, Alabama. In 1963, the family of eight finally settled in Salt Lake City, Utah, where Mary Frances dedicated her life to raising her six boys while Robert continued to work at Hercules, retiring in 1987. During their retirement years, Mary Frances and Robert enjoyed taking walks through the parks and natural areas near their home in downtown Salt Lake City, including Liberty Park and Red Butte Gardens, and spending time with their children and grandchildren.

Robert died in 2012. Mary Frances was his primary caregiver for several years prior to his death.

Mary Frances always said that the years of motherhood were the best years of her life. She joked that if she had been paid a dollar for every meal she prepared, every lunchbox she packed, every pair of grass-stained jeans she washed, and every dish she scrubbed, she could have bought out the U.S. Treasury. And yet she never complained. She found her center and her strength in raising her six boys. She was the gentlest of lionesses, with a fierce love for her family that never dimmed.

Mary Frances enjoyed a good book in the evening. She also liked solving crossword puzzles or crocheting while watching Johnny Carson or a movie. After she developed macular degeneration, she “read” over a thousand audiobooks. Her tastes ranged from Faulkner, Maugham, and Hardy to Harry Bosch, Rizzoli and Isles, and Cormoran Strike.

She was intensely curious. Until almost the end of her life, she would talk with her family about politics, current events, philosophy, literature, poetry, film, history, and whatever else was on her mind. She wanted to know what was happening in the world and what people thought about it. Her sight and hearing diminished, but her mind did not.

She was a brave woman who faced more than her share of personal tragedy. She absorbed the untimely and unexpected deaths of three of her sons, the long and difficult illness of her husband, and, in her last decade, the loss of her sight and much of her hearing. She endured all of it without losing her love for her family, her curiosity about the world, or her sense of humor. In doing so, she showed her children and grandchildren how to face hardship with resilience and grace.

For the last three years of her life, Mary Frances lived in an assisted-living community in San Diego, close to her son Joseph and his family. She remained closely connected to her children and grandchildren.

She celebrated her 100th birthday with her oldest son, her daughter-in-law, three granddaughters, her grandson-in-law, and two great-granddaughters. On a breezy March day, they had cake together on the patio overlooking the Pacific Ocean, with her two younger sons arriving to celebrate a few days later. It was a good centennial birthday, surrounded by her family.

Mary Frances is survived by her sons Joseph (Darci) of La Jolla, California; Brian of Salt Lake City, Utah; and Kevin (Linda) of Berkeley, California; her grandchildren Erin (Scott), Liam (Kathleen), Kevin (Jen), Julia (Anton), Ian, Crimson, Thomas, and Aidan (Peyton); and her great-grandchildren Magnolia, Jewel, Tate, Charlotte, Nikita, and Theodore. She was preceded in death by her husband, Robert (2012), her sons Patrick (1976), William (2019), and Robert (2021), and her brothers and sisters.

Mary Frances was steadfast. She was tough. She was devoted to her family. She was deeply loved and will be deeply missed.

A private service will be held at Mount Calvary Cemetery in Salt Lake City, Utah.

In lieu of flowers, the family suggests donations in Mary Frances’s memory to Macular Degeneration Research at BrightFocus Foundation, which supports research into the causes, prevention, and treatment of macular degeneration.