The Pembroke Welsh Corgi traces its lineage to Pembrokeshire in southwestern Wales, where short-legged herding dogs have worked cattle for at least a thousand years. The name "corgi" comes from the Welsh words "cor" (dwarf) and "ci" (dog), a literal description of the breed's compact frame. Their low center of gravity allowed them to nip at cattle heels while ducking kicks, a technique called "heeling" that made them indispensable on Welsh farms.
One prevailing theory dates the modern breed to 1107, when Henry I of England invited Flemish textile weavers to settle in Wales. The weavers brought small Spitz-type herding dogs that interbred with local stock, producing the foundation of the Pembroke line. An alternative theory links the breed to Swedish Vallhunds brought by Viking settlers centuries earlier.