Darcy had a book, I think it was called Game Dogs of Ireland, there were picture and details of some of the breeding/lines of wheatens.
I enjoy reading the posts about the lines of Patterdale, russells and running dogs, they can be some of the best reading on here. I'm sure a wheaten thread would be just the same.
I saw a very good line of wheatens work years ago and would be interested to know if anyone still has this breeding.
The men who keep wheatens and have the info will know best and wether to contribute.