There’s an online anonymous list of four generations of descendants of an ancestor of mine who died in Kentucky in the 1840s. I’ve used it as a clue to names and relationships. It does have errors–there are death dates that I can’t validate, locations of events that are completely incorrect, incomplete lists of children, and marriages that were not discovered. The names of the beginning ancestor’s parents cannot be validated with any record whatsoever, but the relationships in the succeeding generations were pretty much on the mark-aside from a few children who apparently were overlooked.
It was not perfect.
But it gave me an outline to use as a starting point.
It did not give me a tree to copy without questioning any of it.