The name Sealyham Terrier honors the Sealy Ham estate on the Seal River, in southwestern Wales, where this sturdy and confident terrier was first bred. The father of the breed was an army captain named John Edwardes, who in the mid-1800s retired at age 40 and spent the rest of his life developing his dream dog.
The breeds Edwardes used in his quest were probably Corgis, Cheshire Terriers (a now-extinct type of Bull Terrier), Dandie Dinmont Terriers, Fox Terriers, and West Highland White Terriers. The resulting small white dogs became known as Sealyhams, after Edwardes’ estate.
Today’s Sealyhams are active in conformation shows as well as in agility, obedience, tracking and other working and performance events. They also are wonderful therapy dogs and entertaining family pets. For a fairly small dog, Sealyhams have a big bark and are good watchdogs. This is not a common breed, but despite its rarity, it does extremely well in the show ring. It has become less aggressive and much friendlier with its introduction to the companion dog world.