Gundog Central is a platform to buy and sell hunting dogs, they do have a Pedigree Database, full of multiple entries of the same dog and probably some mistakes, too. Any member can add data and the database is obviously not moderated. Still, it might be helpful in some searches as long as you are aware you should double check any entries.
🔗 Gundog Central Pedigree Database
…lots about pedigrees and stud books