Mary Catherine Mark, a 41-year-old First Nations woman, vanished from Vancouver’s Downtown Eastside and was last seen on February 1, 1977. Born in 1935, she used several other names during her life: Catherine Theresa Mark, Katherine Mary Thom, Katherine Mary Brown, and Catherine Mary Sturcz. Mary was described as medium build, with short hair and a ruddy complexion.

Investigators faced major obstacles from the beginning because she had no government identification and never received social assistance, leaving very limited official records to trace her movements. Police came to suspect foul play and believe domestic violence may have been involved. The primary suspect is deceased and Mary’s body has never been found. The Vancouver Police Department maintains the case file.

Does anyone who knew Mary or recognized any of her names have information that could help fill gaps in her life or disappearance?