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Genetic Genealogy Identifies 1979 New Jersey Murder Victim as Robert Dean Irelan

A DNA match revives a 1979 New Jersey homicide by giving investigators a new starting point.

Overview

  • Ramapo College’s Investigative Genetic Genealogy Center named the long-unknown victim as Robert Dean Irelan using DNA-based family tracing.
  • Troopers found him shot in the head and buried in a shallow grave in Quinton Township, Salem County, during the winter of 1978–1979.
  • The case, reopened in March 2023, advanced when match lists from Family Tree DNA and Match List Pro let researchers build his family tree.
  • Investigators say he lived in Pleasantville and spent time in Atlantic City, details that helped steer the search.
  • Police have notified his relatives and are urging tips, noting his distinctive clothes including a blue Lee jacket with a gold “R” and cross, white painter’s pants, a plaid shirt, Pro-Keds, and a black-and-white pullover.