Seymour's subject-matter was limited to hunting or racing scenes and stiffly posed horse-portraits. His masterpiece, 'A Kill at Ashdown Park', is on display in Room 4. This composition, showing the genial Mr Russell in the hunting-field, is typical of the artist's somewhat formalised manner. Although Seymour's lack of academic training is apparent in his simplified draughtsmanship, he has nevertheless produced a skilful and evocative record of the appearance of the animals, and of the costume and saddlery of the period. Seymour came from a wealthy family but his extravagant lifestyle compelled him to work for a living. His natural ability at drawing animals enabled him to find almost continuous employment in painting horses, despite having lost his fortune on them.