Originally Posted by tinyliny
Irish Sport Horses, and Oldenburgs, are not a really specific breed, but rather a recognzide crossing of breeds. I mean, Oldenburgs can be part this and part that and still be called Oldenburg. Like part Thoroughbred, part Hanoverian and part Swedish Warmblood. At least that's what I was told, and I will accept correction if that is wrong.
That is also my understanding. There is a wonderful Oldenburg mare at my barn, who is really aggressive while in her stall, but outside of her stall she is fantastic.
There is also a woman who brings her Irish Sport Horse in for lessons and training, and he seems to have a wonderful temperment. He is rather large though, 17h. But I am unsure if that is typical of the breed or if he is just a giant.