Sir Daniel Thomas Davies KCVO (November 1899 – 19 May 1966) was a Welsh physician.
[1][2][3] His parents lived in the Garw Valley area, and he attended Bridgend Grammar School.
From 1938 onwards, he was physician to the royal family, firstly to King George VI, and later to both Queen Elizabeth and the Duke of Windsor; he received a knighthood in the 1951 New Year Honours.
[4] In 1953 he was created a Knight Commander of the Order of St. Sylvester by Pope Pius XII.
Together with Lord Dawson, Graham Hodgson, Lionel Whitby and others he undertook important research work on the treatment of pneumonia with the use of Felton's serum.