John Campbell-Stolen by Indians

Found this story on ancestry.com not sure if it's documented or just oral tradition. This would be around 1814 in Vigo County, Indiana.
John and Nancy Campbell moved form Lancaster, Massachusetts to Lake George, New York before 1800. They then decided after a few years to move to Ohio, and then Virginia, and then Indiana. All along the way, they were having children born. In 1812 the family stayed in Indiana after the death of wife and mother Nancy. Probably all the travelling killed her. The family were the first settlers in Vigo County, Indiana. After two years there, John's son, John Jr. was stolen by a group of Indians passing through. It was the greatest sorrow of John's life. He searched for him for many years, until he had found him. The boy of 14, had been traded form tribe to tribe, and at some point married an Indian. The son was happy with his life, and John was satisfied, so he left without him.