London Gazette : 2 August 1945 https://www.thegazette.co.uk/London/issue/37204/supplement/3957/data.pdf https://www.thegazette.co.uk/London/issue/37204/supplement/3958/data.pdf
Personal Number: 93585 Rank: Major Name: Sir Rhys LLEWELLYN, MiD Unit: Welsh Guards London Gazette : 27 June 1939 https://www.thegazette.co.uk/London/issue/34640/page/4353/data.pdf The undermentioned to be 2nd Lts. 28th June 1939: — FOOT GUARDS W . G'ds.— Rhys LLEWELLYN (late Off. Cadet, Cambridge Univ. Contgt., O.T.C.). London Gazette : 9 March 1945 https://www.thegazette.co.uk/London/issue/36973/supplement/1310/data.pdf REGULAR ARMY RESERVE OF OFFICERS. REGIMENTAL LIST. FOOT GUARDS. W. G'ds. 2nd Lt. (War Subs. Capt.) Sir Rhys Llewellyn, Bart. (93585), from Supp. Res. of Offrs. to be 2nd Lt., 9th Mar. 1945, retaining his present seniority. London Gazette : 2 August 1945 https://www.thegazette.co.uk/London/issue/37204/supplement/3958/data.pdf The KING has been graciously pleased to approve that the following be Mentioned in recognition of gallant and distinguished services in North West Europe:— W. G'ds. Lt.-Col. (temp.) Sir Rhys LLEWELLYN, Bt. (93585). London Gazette : 26 February 1952 https://www.thegazette.co.uk/London/issue/39476/supplement/1115/data.pdf W.G. Lt. (War Subs. Maj.) Sir Rhys LLEWELLYN, Bt. (93585), to be Maj., 1st Nov. 1947. London Gazette : 2 May 1961 https://www.thegazette.co.uk/London/issue/42342/supplement/3259/data.pdf FOOT GUARDS W.G. REGULAR ARMY RESERVE OF OFFICERS Maj. Sir Rhys LLEWELLYN, Bt. (93585), having exceeded the age limit, relinquishes his commn., 3rd May 1961, and is granted the hon. rank of Lt.-Col.
Llewellyn Brothers left to right Captain Rhidian Llewellyn M.C., Captain Sir Rhys Llewellyn Btn., Lieutenant David Llewellyn