Robert Kolleth Herzog, known lovingly as Bob, passed away on June 1, 2026, in Chicago, Illinois, at the age of 80.

Bob was born on September 9, 1945, in Chicago, Illinois, and spent his life carrying the values of hard work, loyalty, and family pride wherever he went. He was a son, brother, father, grandfather, uncle, and friend who left a lasting impression on everyone who knew him. Those who loved him will remember him as kind, funny, and spirited, with a warm presence and a quick wit that could brighten any room.

Bob was a proud veteran of the United States Army and served his country during the Vietnam War. His service was an important part of his life, and he carried the discipline and sense of duty he learned in the Army throughout the years that followed. After his military service, he worked for Armstrong Brothers Tools, where he was known for his reliability, teamwork, and strong work ethic. He later served as a school bus driver in Pahrump, Nevada, a role that he cherished and that allowed him to reflect on his own school and athletic memories, as he often volunteered to drive various teams to their events.

Bob attended Roosevelt High School in Chicago, Illinois, where he built the foundation for a life marked by perseverance and determination. In his younger years, he was a high school wrestler and speed skater, both of which reflected his competitive spirit and love of staying active. He carried that same energy into his later years, especially in the sports and activities he enjoyed most.

Bowling and golf were among Bob's favorite pastimes, and he found great enjoyment in the friendships and memories built around them. He also enjoyed coaching soccer for his son, a role he embraced with enthusiasm, vigor, and pride. Bob had a knack for finding hidden treasures while thrift shopping, a hobby that brought him both enjoyment and countless stories over the years. He also appreciated the simple pleasure of unwinding with an evening cocktail of Southern Comfort.

Some of Bob's happiest memories were made with his brothers and friends at their family lake house in Michigan, where days were spent boating and fishing and where plenty of tomfoolery and shenanigans became cherished family stories. Those times together reflected the strong bond he shared with his brothers and remained among his favorite memories throughout his life.

In his later years, he enjoyed playing with his grandchildren, taking great joy in their accomplishments and in the time he was able to spend with them. Time with his children and grandchildren was among the most meaningful parts of his life and reflected the deep love he had for his family.

Bob is survived by his brother, Tom Herzog; his son, Tim Herzog and his wife, Cindy; and his daughter, Keri Kennedy. He is also survived by his stepdaughters, Rachel Ramirez and her husband, Carlos; Sarah Bielat and her husband, Jeremy; and Rebecca Williams and her husband, Scott. His memory will be cherished by his grandchildren, Gavin, Tyler, John, Peyton, Quinn, Aidan, Patrick, Keagan, Olivia, Addie, and Noah. He also leaves behind a number of nieces and nephews, as well as great-nieces and great-nephews, all of whom were blessed by his presence in their lives.

Bob was preceded in death by his parents, John and Catherine Herzog; his older brother, Jim Herzog; and his younger brother, John Herzog.

Bob's family and friends will remember him for his steady character, his sense of humor, and the spirited way he lived his life. His legacy will live on in the stories shared by those who knew him best. Though he will be deeply missed, his life was one of service, devotion, and love, and the impact he made will not be forgotten.

The family is grateful for Bob's service to his country and the example of dedication, patriotism, and perseverance he leaves behind.

He will be remembered with love and gratitude by all who had the privilege of knowing him.

In accordance with Bob's wishes, he will be cremated, and a private family ceremony will be held at a later date.

Memorial donations may be made to the Wounded Warrior Project, a cause that was especially meaningful to Bob and close to his heart.