Another unique Dog breed quiz?

Can you guess what AKC recognised breeds known today, were created from these mixes, and their brief history?

1)ancestors were two German mastiff type dogs, the Bullenbeiszer and the Barenbeiszer. They were later crossed with the powerful ancestors of the Mastiff and Bulldog. Early on, these dogs were prized for hunting, bull baiting, and for pulling carts. A bit farther down the family tree, this breeds ancestors became cattle dogs, and were used to round up livestock.

2)Originally used as a vermin hunter. The breed was created by crossing the old English rough-coated Black and Tan Terrier (now known as the Welsh Terrier) with the Otterhound. It is also said to have Manchester Terrier in its blood. In addition to his role as a small game hunter, this breed has been used to hunt big game in Africa, Indian and Canada, and as a police dog and army sentry dog in World War II.

3)breed emerged over time from the St. John’s Water Dog, also an ancestor of the Newfoundland dog (to which this breed is closely related), through ad-hoc breedings by early settlers in the mid to late 16th century.The original forebears of the St. John’s dog have variously been suggested to be crossbreeds of the black St. Hubert’s hound from France, working water dogs from Portugal, old European pointer breeds and dogs belonging to the indigenous peoples of the area. this breed is one of the most popular breeds in the United States. Originally from Newfoundland, Canada, this breed was trained to jump overboard into the icy waters to haul fisherman’s nets to shore

4)Crossed with anish Hound, Danish Gallant, Deutsche Dogge, Boarhound, Grand Danois or German Mastiff, these magnificent animals capable of overcoming bears and wild boars were much admired, a process of selective breeding was begun. The dogs were crossed with Irish Greyhounds, and the issue was the beautiful, large, thin, agile dog known today
You have to guess 4 breeds
Thumbs up for everyone for answering. One of you has it right, and will find out when i can choose best answer!
lol, good answer Launi!