Dennis Nathan Mann was 19 years old when he disappeared from Winona, Mississippi, in Montgomery County, in early 1979. Online case records identify him as a young White man with brown hair and brown eyes, about 5 feet 10 inches tall and approximately 165 pounds. He was described as having a mustache at the time he went missing, and one identifying feature noted in missing-person records is a scar on the right side of his abdomen. The clothing description preserved in public case summaries is specific: a blue plaid shirt, a denim jacket, Levi’s jeans, and yellowish-tan cowboy boots. Those details remain important because, in a case with very few publicly known circumstances, they are among the clearest pieces of information tied to Dennis as he was last known.
Dennis was not originally from Winona. Public summaries state that he had moved from Tennessee to Mississippi for work, reportedly as part of a crew connected to construction of a Wal-Mart store in the area. After that job was completed, he did not immediately return home; instead, he chose to remain in Winona and found other work. That decision placed him in a small Mississippi community far from where he had grown up, trying to build the next stage of his life as a young adult. The available accounts do not describe him as someone preparing to disappear voluntarily, and the public record gives no indication that he had planned to sever contact with the people who knew him.
The central event in Dennis’s case is his visit to a friend’s residence in Winona. NamUs lists his date of last contact as January 26, 1979, and describes the circumstances as unknown, stating that he mysteriously vanished while visiting a friend’s residence. Other online sources place the friend’s home on Foltz Road in Winona and say that after being there, Dennis never returned to his own residence and was never heard from again. Some public sources list January 29, 1979, rather than January 26, 1979, as the last-seen date; because the official NamUs record and other summaries use January 26, that date is often cited as the date of last contact, while the conflicting public references show that some details in the case have remained imprecise over time.
What happened after Dennis was last seen remains unclear. The public case summaries do not describe a confirmed destination, a verified sighting after he left the friend’s residence, or any known communication from him afterward. The details available online suggest a sudden break in an otherwise ordinary day: a young man in work clothes, living in Winona after relocating for employment, visits someone he knows and then disappears without a confirmed trace. MissingSippi states that foul play is suspected, though Dennis has not been located and the case remains unsolved. That statement reflects the seriousness with which his disappearance has long been viewed, but public sources do not provide a definitive account of what occurred or identify a proven suspect.
The investigation is associated with the Montgomery County Sheriff’s Office in Winona, Mississippi. NamUs lists the agency connected to the case as the Montgomery County Sheriff’s Office and includes the agency case number M83-26. Over the decades, Dennis’s case has remained in missing-person databases and cold-case resources, where the same core facts continue to be repeated: his name, his age, his physical description, the clothing he wore, his connection to Winona, and the uncertain circumstances surrounding his disappearance. The continued presence of his case in public databases is a reminder that, even when time passes and records become sparse, Dennis was a real person with a family, a history, and a future that was interrupted.
Dennis Nathan Mann’s disappearance is the story of a 19-year-old man from Tennessee who went to Mississippi for work, stayed in Winona after that work ended, and vanished after visiting a friend’s residence in January 1979. He was last documented as a young man with brown hair and brown eyes, wearing a blue plaid shirt, denim jacket, Levi’s jeans, and yellowish-tan cowboy boots. The public record does not provide a clear explanation for why he never returned home or why no confirmed contact from him followed. At its heart, the case remains a painful and unresolved absence: Dennis Mann was last known in Winona, Mississippi, under circumstances that were described as mysterious, and the available online record leaves his family and community with the same essential questions that began when he first disappeared.
Last Seen: Jan 26, 1979
