I've seen several reports now naming breeds of dogs, and it doesn't look like any of the dogs were «pit bulls». (btoellner.typepad.com)
The first time the term «Border Collie» was used was in 1915 by the Secretary of the International Sheep Dog Society James Reid, naming the breed in order to register them as a separate breed along with other Collie breeds already registered. (bordercollieadvice.com)
The legend has it that President Theodore Roosevelt named the breed after his own dog who had solved the White House rat problem. (puppy-training-solutions.com)