Originally Posted by ThoroughbredJumper
Here is Cleave jumping 3'11" a week after getting off the trailer from Delaware. No former "real" training to help him. That is the max we pushed him and you can see, its not really pushing him.. haha I just refuse to think this is all an accident, he must have good breeding somewhere... But where, I have no idea... (we have not jumped him this high since and are working with smaller jumps to get his ride and technique before and after the jumps better as well as his muscle to come in.)
Gotta say, those are the tallest standards ever if that's 3'11" - making those standards about 8' tall..
Anyways.. Horses registered with the American Warmblood Society can be a mish-mash of just about any breed. They truly take the "thoroughbred mixed with a draft" or "draft crosses = warmblood" to heart: Warmbloods | Sport Horses | Dressage Horses
Perhaps you can contact the AWS, send them a photo of your horse along with a description of him (i.e. Age) and they may be able to track down more information.