Photo of Mary Frances Gregory

The Disappearance of Mary Frances Gregory

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Mary Frances Gregory was last seen leaving her home in Parry Sound, Ontario, Canada on February 15, 1978. She’d planned to visit Palo Alto, California for a vacation, and was in the company of a male acquaintance. It’s believed the pair crossed into the United Sates via the border with New York three days later, on February 18.

Police spoke with the man, who claimed he drove through New York, Pennsylvania, Ohio, Illinois, Colorado, Utah, Arizona and Nevada during the trip west. He told them he’d dropped Mary off at a bus station in Las Vegas on February 28, but no explanation has been publicly released as to why.


Mary never arrived in California as planned and has not been heard from since.


Mary was carrying luggage with her at the time of her disappearance, which has never been recovered by investigators. The man she was travelling with has never been publicly identified.

At present, the Parry Sound detachment of the Ontario Provincial Police is handling the investigation. Mary has been listed as a missing person in both Ontario and California, and foul play is suspected in her disappearance.

Partial dental records are available for 10 of Mary’s teeth, as is her DNA. Her DNA has been compared against the Perry County Jane Doe and Sahara Sue, but both were determined to not be the missing teenager.


Mary Frances Gregory went missing from Parry Sound, Ontario, Canada on February 15, 1978. She was 19 years old, and what she was last wearing is currently unknown. At the time of her disappearance, Mary had a medium build, standing at 5’3″ and weighing between 110 and 111 pounds. She has straight, shoulder-length dark blonde-to-brown hair and hazel eyes. She has a 10mm mole on her waist, with some sources saying it was on the right side of her chest, and is near-sighted and wears contacts. Mary previously had an overbite, but this was corrected with braces, and her teeth are said to have been in good condition.

Her family believes she may have suffered from some form of memory loss immediately following her disappearance.

Currently, the case is classified as endangered missing. If alive, she would be 63 years old.

Those with information regarding the case are asked to contact are asked to contact the West Parry Sound detachment of the OPP at 705-746-4225 or the director of the Criminal Investigation Branch at either 1-888-310-1122 or 705-329-6111. Tips can also be submitted anonymously via Crime Stoppers at 1-800-222-8477.

Image Credit: State of California – Department of Justice

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