Horatio Nelson, 1st Viscount Nelson | Viscount | Vickers Viscount | Chelmsford | Bernard Montgomery, 1st Viscount Montgomery of Alamein | William Howe, 5th Viscount Howe | viscount | Garnet Wolseley, 1st Viscount Wolseley | Charles Lyttelton, 10th Viscount Cobham | William Slim, 1st Viscount Slim | Edmund Allenby, 1st Viscount Allenby | William Lamb, 2nd Viscount Melbourne | Julian Byng, 1st Viscount Byng of Vimy | Alan Brooke, 1st Viscount Alanbrooke | William Waldorf Astor, 1st Viscount Astor | James Bryce, 1st Viscount Bryce | Henry St John, 1st Viscount Bolingbroke | Henry John Temple, 3rd Viscount Palmerston | Edward Grey, 1st Viscount Grey of Fallodon | Charles Bathurst, 1st Viscount Bledisloe | Walter Runciman, 1st Viscount Runciman of Doxford | Viscount Falkland | Samuel Hood, 1st Viscount Hood | John Anderson, 1st Viscount Waverley | James Craig, 1st Viscount Craigavon | William Beresford, 1st Viscount Beresford | William Barrington, 2nd Viscount Barrington | Stapleton Cotton, 1st Viscount Combermere | Rowland Hill, 1st Viscount Hill | Marcus Samuel, 1st Viscount Bearsted |
His father was a General, his grandfather the 1st Baron Chelmsford was twice Lord Chancellor of the United Kingdom, and his elder brother Frederic Thesiger had a distinguished career as colonial governor, became Viceroy of India and was created Viscount Chelmsford.
Viscount Chelmsford, future Viceroy of India was an uncle, and the actor Ernest Thesiger was a cousin.