Marian Margaret Prothero

Marian Prothero, 89, passed away peacefully on October 1, 2026, in the home of her daughter, Catherine, with her faithful companion Molly by her side. Known simply as Marian to most of the world, she became affectionately known as “Meems” when she became a grandmother—a name that suited her perfectly and was cherished by all who knew her that way.

Marian was born to Joseph and Emma D'Arpa, whom she adored. She attended St. Peter of Alcantara Elementary School and graduated from Paul D. Schreiber High School in Port Washington. She attended Nasson College in Maine, where she earned her associate degree.

One of the most important chapters of Marian's life began when she was just 17 years old. While spending a day at Bar Beach, she met a young Navy sailor from California named Billie Ray, later William Raymond Prothero. The boys on the beach asked the girls on the blanket next to them to watch their transistor radio. That simple request began a love story that would last a lifetime.

Marian and Bill married in 1958 and shared 46 years together until his death in 2004. Bill was the love of Marian's life, and together they built a family and a home filled with love, laughter, friends, and countless memories.

Early in her career, Marian worked as an art buyer and model at McCann Erickson in New York City during the 1960s. There she met Joan Ruffino and the two became lifelong best friends. With the office near Rockefeller Center, their lunches sometimes included the fun of spotting celebrities around 30 Rock. Their friendship extended beyond the office. Over the years it transcended time and space.

Marian was a woman who cared for people—often quietly, without asking for recognition. After the death of her parents, she became guardian to her brother, Joseph D'Arpa Jr., who had disabilities. She devoted herself to making sure he was safe, cared for, and loved. This largely unnoticed act of love was a beautiful reflection of who Marian was: when someone she loved needed her, she was there.

Marian spent more than 40 years as a waitress at Stella's Ristorante in Floral Park, where she became part of the lives of generations of families. She spent many of her daughters’ formative years surrounded by the people of Stella's, and those relationships became an important part of her life.

Marian was also a talented seamstress who had an eye for fashion. She made her own prom dress—the dress she wore when Bill took her to the prom—as well as her work clothes, dresses for her daughters, slipcovers, pillows, and countless other creations. In her later years, she continued sewing and tailoring for people in her neighborhood. Sewing was not simply a skill for Marian; it was something she loved and a way she connected with others.

Her home was always a place where people were welcome. The family pool became a gathering place for generations of children. Marian watched her daughters' friends grow up, then welcomed her grandchildren and their friends into that same home. With her grandchildren ten years apart, there were literally hundreds of children who spent time at Marian's house over the years. There was always room for one more.

Marian is survived by her daughters, Catherine Mahoney and Christine Koenig; her grandchildren, Christopher Koenig, Kyle Mahoney, and Eli Mahoney; and her son-in-law, Kevin Mahoney. For the last six years, Marian lived in Tennessee with Catherine and Kevin who loved her as a mother of his own. Her relationship with each family member was a special gift.

Marian was preceded in death by her beloved husband, William Raymond Prothero; her parents, Joseph and Emma D'Arpa; her brother, Joseph D'Arpa Jr.; and her beloved grandson, Connor Koenig.

Marian's family will remember her not only for the years she gave them, but for the way she loved: steadfastly, practically, creatively, and without asking for anything in return. She made things with her hands, made people feel welcome in her home, and made caring for the people she loved simply part of who she was.

Her family finds comfort in knowing that she is reunited with Bill, the love of her life, and that the love she gave so freely will continue through the generations of family and friends she leaves behind.

In lieu of flowers, donations may be made to Connor's Kloset in memory of her beloved grandson, Connor Koenig.

A Funeral Mass will be celebrated at 10:30 a.m. on November 7, 2026, at Our Lady of Hope Roman Catholic Church in Carle Place, New York. Committal will follow immediately at the Cemetery of the Holy Rood in Westbury, New York. Following the committal, family and friends are warmly invited to gather for a meal and fellowship as they share memories and celebrate a life lovingly remembered.