Originating in the mid-19th century in England, the Flat-Coated Retriever gained popularity as a gamekeeper’s dog. Part of its ancestry is thought to have come from stock imported from North America from the now extinct St. John's water dog, but this is unverified. Canadian seafarers are thought to have brought Newfoundlands to British ports, and they factored into the ancestry of the Flat-Coated Retriever. Collie-type dogs may have been added to increase the breed's trainability along with the Newfoundland for strength and Setter blood for enhanced scenting ability. The first examples of the breed were introduced around 1860, but the final type was only established 20 years later.