UPDATE: Lost horses claimed!
The horses had a four day holiday at Great and Small Farm and were claimed on Sunday night... leaving on Monday fornoon. They came from just a few miles away at a homestead which lays on the other side of a creek from the road- so not visible as you drive by- which might explain why no one could say they had ever seen these animals before.
It turns out the beautiful horse belongs to the Chief of Police. Currently I do not know if he knows his horse was ever missing because this other guy was supposed to be taking care of him... perhaps the reason why the lost horses were not called in and reported to the Sheriff was because he was hoping that he'd find the animal before the chief of Police found out... !? (maybe I'm reading too much into it)