The name isn't that unusual but the story is a good one as to how Jacks Creek got its name. It's not named after a man but rather a dog. According to the legend, several men were hunting through the valleys and mountains. Once the men followed a bear all day long. It was many hours before they caught up with the dogs and bear. All the dogs had been beaten back but one or two, one of these being Jack. Finally at the end of the chase they were at a pile of drift in the middle of a big creek. It was a stream the hunters had never seen before. It had no name, Jack,  the dog had the bear bayed in the creek and would not give up, although he was bleeding and suffering from many wounds. The hunters killed the bear, administered aid to Jack and named the creek after him.