- Blenheim (chestnut and white) is the most famous colour of the Cavalier King Charles Spaniel breed.
- The breed is related to Charles II of England (who was fond of similar spaniels), in the 17th century.
- The particular colour is related to Blenheim Palace, Oxfordshire, where this kind was raised by John Churchill, 1st Duke of Marlborough.
The Cavalier’s Pets painting by Sir Edwin Henry Landseer is exhibited in the Tate Britain, London.