Born at Beulah, Breconshire, 2 January 1877, the seventh child and only son of Moses Williams, and his wife Ann Jones. He was educated at Christ College, Brecon, and the London Hospital. He won an entrance science scholarship to the Hospital's Medical College in 1897, and a scholarship in anatomy and physiology in 1900. After qualifying in 1902 he served as house surgeon at the Hospital and as clinical assistant in the medical out-patients, the ear, nose, and throat, and the skin departments. Williams practised throughout his career at 27 St George's Place, Canterbury, where he was medical officer to the Prison, and physician to the Kent and Canterbury Hospital. He married in 1905, the year in which he took the Fellowship, Mabel Elizabeth Iredale, who survived him with two daughters and a son, Thomas Meurig Williams, FRCS 1936. He died on 25 March 1950 at 15 South Marine Terrace, Aberystwyth, where he had been living since his retirement, aged 73.