Professor Tonks was a close friend of Hugh Hammersley and his Scottish wife Mary. He was a frequent guest of the couple with Philip Wilson Steer and Ronald Gray, and they often used to dine in their dining-room hung with Sickerts. Mary Hammersley was a semi-invalid with tuberculosis who gave up entertaining in 1910 because of her poor health. Tonks continued to visit her throughout her life.
(see J. Hone, The Life of Henry Tonks, London, 1939, pp.88-89)