John Karl Bossert

December 17, 1969 – May 1, 2026

John Karl Bossert passed away peacefully, surrounded by family, and comforted by the sacraments early on May 1st, 2026 at the age of 56.

John’s life was defined by hard work, loyalty, and a deep sense of responsibility to the people he loved. He was preceded in death by his parents, Martha and Rudolph Bossert, and his sister Ann Hemenway. He is survived by his wife Denise Bossert, his children Andrea, Stephen, Kari, and Jennifer, and his grandchildren Joey, Omry, Levi, Asher, Eli, Suzie, Isabelle, Eliana, Miles, Eden, Katya, and Celeste, his stepmother Rochelle Bossert, and his brother-in-law Kevin Hemenway.

John was born on December 17, 1969. Those who knew him best would describe him as a man of strong, honorable character. His sarcastic sense of humor often masked just how deeply loyal he was: he was the kind of person who would drive across town at any hour to pull someone he loved out of a difficult or unsafe situation, and never speak of it again.

In 1996, by his own account, John somehow convinced Denise Bossert to marry him. The two met in graduate school at SIUE, where Denise was balancing school, work, and raising her three children. John asked her out on March 1, 1996, and five months later proposed in a gas station parking lot on the way to see Evita, while the song “Two Less Lonely People” was playing in the car. Just weeks later, on September 14, 1996, they were married in a ceremony officiated by Denise’s father, Dennis Johnson.

John adored Denise with a steady and committed love that defined their life together. He never took for granted the life they built, or that she chose him.

In 2007, John attended RCIA and followed Denise into the Catholic Church. His faith became a steady part of his life, reflected in the way he lived, the sacraments he kept, and his active presence in his parish community. He was also a consistent supporter of Catholic charities and organizations, including maternity shelters and animal welfare efforts.

Family was everything to John. He loved deeply and showed it through his presence, reliability, and the quiet ways he cared for those around him. He was a father to Andrea, Stephen, and Kari by choice, and to Jennifer, the daughter he and Denise welcomed together, carrying that role with deep pride and purpose.

John had a sharp wit and a dry, often perfectly timed sarcasm. He had little tolerance for inefficiency and wasn’t shy about speaking up when something just didn’t make sense. At the same time, he had a huge heart for friends, family, and anyone in his life who needed someone to show up for them.

He found joy in simple things: his dogs, time with his family, and random road trips where he controls the music. Artists like Vince Gill and The Eagles were among his favorites, which he would impose with enthusiasm on anyone in the same car. It was often the kind of music that felt honest, grounded, and full of heart, much like he was.

While his family has lost a husband and a father, many others have lost a friend, a mentor, and someone who showed up when it counted. To everyone, he was a source of contagious calm, life-giving wisdom, and unwavering support in their lives. John was many things: sarcastic, loyal, stubborn, and deeply caring. But above all, he was someone who tried, every day, to take care of the people he loved.

And if there’s one thing he might want remembered, it’s this: you can always buy one more gun, one more knife, one more watch.

All funeral arrangements will be held this Friday, May 8th.

Visitation: Friday, May 8th from 9:00 – 10:00 AM at Kutis Funeral Home: 5255 Lemay Ferry Rd, St. Louis, MO 63129

Funeral Mass: Friday, May 8th at 11:00 AM at Our Lady Queen of Peace Catholic Church: 496 Notre Dame Dr, House Springs, MO 63051

Burial: Immediately following funeral at Resurrection Cemetery: 6901 Mackenzie Rd, Saint Louis, MO 63123 (A map will be provided at the funeral mass.)

Luncheon: Immediately following burial at Rich & Charlie’s: 9942 Watson Rd, Saint Louis, MO 63126

The home in El Dorado will be vacant for the near future, so all memorial donations or sympathy gifts can be directed to these either of these two places:

Mother of Good Counsel Home

This is John’s daughter’s workplace. John was a longtime supporter of Mother of Good Counsel Home’s mission. Follow this link to their donation page to submit a “Memorial Donation”.

Mission Support – Mother of Good Counsel Home

Rose Garden Fund

John’s wife Denise intends to move into a home in St. Louis, MO, and will use these funds to build a rose garden in memory of John on her new property. You can direct sympathy gifts to Denise’s cashapp: $DeniseBossert