Andrew Preble Grinnell was 16 when he was last documented on July 18, 1984, during an extended canoe trip in the James Bay region of northern Ontario. He was traveling with his older brother George Grinnell, Alexander Sandy Host and Betty Eamer. The four left Fort Albany about 6:00 p.m. that day, planning to travel south along the coast with their canoes tied together.

Severe weather struck the area on July 23, and later accounts identify that storm as the likely event that overwhelmed the party. Search teams from the Ontario Provincial Police located three bodies on August 11–12, 1984; those remains were later identified as Andrew’s three companions. Andrew was never recovered. He was described as brown-haired, medium build, about 5 feet 8 inches and 141 pounds.

The disappearance is treated as the unresolved final part of the documented James Bay canoeing tragedy: the group’s departure from Fort Albany, a violent change in weather, an intensive search, and recovery of everyone in the party except Andrew. If anyone knew Andrew, the trip route, or saw anything along the western shore of James Bay in July 1984, please share what is known.