Born in London on 19 January 1869, the second child and elder son of James Sydney Walton, a gentleman with private means, and Eleanor Georgina Louissan, his wife. He was educated in Paris for some time, then at private schools, and finally at Charterhouse, 1881-84. He received his medical education at St Bartholomew's Hospital, and acted for a short time as assistant house surgeon at the Salop Infirmary, Shrewsbury. At the University of London he graduated with honours at the MB examination and gained the gold medal at the MD. He entered Netley, passed first into the IMS and was gazetted lieutenant on 29 July 1896, with the first Montefiore prize for military surgery and the Martin memorial medal for military medicine. Choosing Bengal, he served on the NW Frontier in 1897-98 (medal and clasp); China 1900 (relief of Pekin and actions of Peitsang and Yangtsun, medal and clasp); Tibet 1903-04 (operations at and around Gyantse, march to Lhasa, medal and clasp). He was promoted captain, 10 July 1899; major, 29 January 1908; lieutenant-colonel, 29 January 1916; and retired on 1 September 1921. He was in military employ until May 1905 when he became civil surgeon, United Provinces. From September 1913 to October 1914 he held the chair of pathology at King George's Medical College, Lucknow, and in April 1915 he reverted to military duty until March 1919. After his retirement he lived at Godalming, where he died at Olinda, Knoll Road on 8 May 1938. He never married.