Morrish's artistic talent extended to his children; his son Bertram and youngest daughter Maggie also painted Dartmoor landscapes, having received training from him.
George Pycroft, in his book Art in Devonshire, noted, "He received some education at Heatherleigh's School in London, but his chief source of instruction was the work and conversation of the artists who in summer visited his picturesque neighbourhood.
He paints with a bold, firm touch in the open air; his work is characterised by perfect fidelity and truthfulness, and he is an admirable delineator of Dartmoor scenery" (Art in Devonshire, 1881, p.
Morrish, a keen observer of Nature, possessing a full knowledge of the country he loves to paint, has given us some splendid pictures of the glorious heather which is its pride" (Western Morning News, August 1903).
[3] Morrish is particularly noted for his atmospheric portrayals of the moor in all weather conditions, capturing its wide expanses of heather and gorse, tors, and rivers.