I would have to see a pic of him, usually they are bigger and weighing close to 100 lbs. Here is what I found on the net about the breed.
Historians are fairly confident that the Old English bulldog is derived from ancient war dogs, such as the old Mastiff or Alaunt. Others believe that the true origin of the breed is not entirely clear. Depictions in old prints show that the variety was without doubt a small Mastiff, with a comparatively long head. The word 'Mastiff' was eventually dropped when describing these smaller Mastiffs, as the Mastiff proper was found too slow for bull-baiting. Eventually, the Greyhound was crossed into the breed, increasing the mastiff's speed without losing the breed's ferocity. This step reduced the Old English bulldog's size and weight, with the Greyhound's features seen in specimens of that time.
One contemporary recreation of the breed is called the Olde English Bulldogge. Starting in the 1970s, a breeding program developed for cattle at Ohio State University was used, with the aim of recreating the Old English bulldog. This modern day version, though possessing similar physical abilities, does not have the violent temperament of the Old English bulldog. This recreation was done by line-breeding to create a breed with a foundation of half bulldog, and the other half Bullmastiff, American Pit Bull Terrier, and American Bulldog.