Her identity was established with help from a lab in the United States that specializes in forensic genealogy, in what OPP said was the first use in Canada of such technology to identify a victim.
Rodney Nichols, an 81-year-old man who resides in Hollywood, Fla., has been charged with murder, OPP said.
“Prematurely sharing developments in the investigation could have jeopardized the investigation and ensuing court processes, including potential extradition from the United States.”
Court documents obtained by the Canadian Press show that Nichols was charged in September with murdering Langford between April 22 and May 3, 1975.
The remains of the victim were found on May 3, 1975, floating in the Nation River, a short distance from the Highway 417 bridge near Casselman, Ont., and the unidentified woman was known for decades as the “Nation River Lady.”
Det.-Insp. Daniel Nadeau said the 48-year-old woman was a well-known member of the business community in Jackson, Tenn., who co-owned a spa with her ex-husband.
He said she had travelled to Montreal in April 1975 and never returned home.
“At that time, her family in Tennessee had reported her missing,” he said.
“While I cannot get into the specifics that will be entered at trial, I can tell you that the accused and the victim were known to each other.”
He said the Centre of Forensic Sciences in Toronto obtained a new DNA profile of the victim in 2019.
Nadeau said the DNA data was sent to a lab in California where the DNA samples matched those collected from two individuals listed in a family DNA tree.
The DNA Doe Project, an organization that works to identify victims in cold cases, said the woman was identified after OPP contacted them for help on the case in 2019.
The organization said a DNA profile for the victim was uploaded to genetic genealogy databases in 2020 and its team of volunteers identified Langford as a likely candidate within a few weeks.
Huyer said DNA samples were then obtained from the surviving relatives of Langford, including her nieces.
“This was a long, ongoing process, never stopping.”