Personal Number: 132246 Rank: Second Lieutenant Name: The Honourable Terence Marne O'NEILL Unit: Irish Guards London Gazette : 31 May 1940 https://www.thegazette.co.uk/London/issue/34861/supplement/3261/data.pdf The undermentioned Cadets, from 162nd, 164th, 165th, 166th, and Sandhurst Officer Cadet Training Units, to be 2nd Lts. 25th May 1940:— I. G'ds. Hon. Terence Marne O'NEILL (132246). Belfast Gazette: 1 January 1970 https://www.thegazette.co.uk/Belfast/issue/2593/page/1/data.pdf CENTRAL CHANCERY OF THE ORDERS OF KNIGHTHOOD ST. JAMES'S PALAQE, LONDON s.w.i 1st January 1970 THE QUEEN has been graciously pleased to signify her intention of conferring a Peerage of the United Kingdom for Life upon the undermentioned: Life Peer To be a Baron: Captain The Right Honourable Terence Marne O'NEILL, D.L., lately Prime Minister of Northern Ireland.