To help you find what you're looking for, could you tell me:
* Where did you hear about this breed? (A specific book, website, or person)
* What kind of horse are you looking for? (Size, temperament, color, etc.)
* What are you using this information for? (Research, purchasing a horse, etc.)
With more information, I can help you find the breed you're interested in or explain why the name "Yealand" might be incorrect.