DNA Identifies New Jersey Murder Victim in Nearly 50-Year Cold Case

Robert Dean Irelan is no longer a nameless murder victim from a rural Salem County grave. After nearly five decades, DNA work helped state police and Ramapo College’s Investigative Genetic Genealogy Center put a name to the man found dead off Jericho Road in Quinton Township, turning a long-cold John Doe case into an active homicide investigation with a real victim history to rebuild.

The body was discovered on June 2, 1979, in a wooded area in Salem County, about 41 miles from Philadelphia. Police said Irelan suffered a gunshot wound to the head and believed he died during the winter of 1978-1979, when he was in his late teens or early twenties. Before the identification, investigators had only a composite sketch, a set of clothes, and a handful of forensic clues to work with.

Those details mattered. Irelan was found wearing white painter’s pants, black Pro-Keds sneakers, a plaid cotton shirt, a heavy black-and-white pullover sweater, and a dark blue Lee wool jacket. The jacket carried a gold-plated “R” on one pocket flap and a small gold-plated cross on the other, a pair of distinctive markers that may now help investigators reconstruct where he had been and who knew him in the months before his death.

The case was reopened in March 2023 by the New Jersey State Police Cold Case Unit, which teamed up with Ramapo College’s IGG Center, launched in December 2022 and described by the college as the first of its kind in the world. The center used investigative genetic genealogy, including Family Tree DNA and Match List Pro leads, to narrow the identity through family connections before confirming the result by direct comparison. Ramapo has said IGG is an investigative lead, not proof on its own.

Tracie Boyle, the Ramapo case manager on the file, said the team focused on likely South Jersey and Atlantic City connections, a clue that fits Irelan’s known ties to Pleasantville and time spent in Atlantic City. With the name now restored, investigators are asking a different set of questions: who killed Robert Dean Irelan, where was he moving in the winter of 1978-1979, and who in South Jersey remembers the young man behind the jacket and sketch.

State police said they are still seeking public tips and anyone with information can contact the Cold Case Unit at coldcase@njsp.gov.