| Honorific Prefix: | The Right Honourable |
| The Lord Rockley | |
| Birth Date: | 30 May 1865 |
| Birth Place: | London, England |
| Death Place: | Poole, Dorset, England |
| Honorific Suffix: | GBE PC |
| Party: | Conservative |
| Office: | Member of Parliament for Hertford |
| Term Start: | 1898 |
| Term End: | 1900 |
| Predecessor: | Abel Smith |
| Successor: | Abel Henry Smith |
| Office2: | Member of Parliament for Aston Manor |
| Term Start2: | 1900 |
| Term End2: | 1918 |
| Predecessor2: | George Grice-Hutchinson |
| Successor2: | Constituency renamed |
| Office3: | Member of Parliament for Birmingham Aston |
| Term Start3: | 1918 |
| Term End3: | 1929 |
| Predecessor3: | New constituency |
| Successor3: | John Strachey |
| Father: | Lord Eustace Cecil |
| Relatives: | Arthur Balfour (cousin) |
| Education: | Eton College |
| Alma Mater: | New College, Oxford |
| Children: | 3; Robert William Evelyn Margaret Gertrude Cecil Maud Katharine Alicia Cecil |
Evelyn Cecil, 1st Baron Rockley, GBE, PC (30 May 1865 – 1 April 1941), was a British Conservative Party politician.
Evelyn Cecil was born in the parish of St George's, Hanover Square in the heart of London's Mayfair, the eldest son of Lord Eustace Cecil, grandson of James Gascoyne-Cecil, 2nd Marquess of Salisbury, and cousin of both Sir Robert Cecil and Arthur Balfour.
He was educated at Eton before going up to New College, Oxford. Cecil was Private Secretary from 1891 to 1892, to the Prime Minister, his uncle, Robert Gascoyne-Cecil, 3rd Marquess of Salisbury, during the latter's second term and during his third term from 1895 to 1902.
On 16 February 1898, Cecil married the Hon. Alicia Amherst (a garden historian and daughter of William Tyssen-Amherst, 1st Baron Amherst of Hackney), having three children: Robert William Evelyn, later 2nd Baron Rockley (28 February 1901–26 January 1976),[1] Margaret Gertrude (27 November 1898 – 26 August 1962) and Maud Katharine Alicia (21 November 1904 - 12 June 1981).[2] [3]
Cecil was a director of the London and South Western Railway company. He was the chairman of various investment trust companies and deputy chairman of the Clerical, Medical and General Life Assurance Society.[4]
Cecil served as a Member of Parliament from 1898 to 1929 and was appointed a Knight Grand Cross of the Order of the British Empire (GBE) in the 1922 New Year Honours. He was raised to the Peerage on 11 January 1934 as Baron Rockley, of Lytchett Heath, in the County of Dorset.
Lord Rockley died in 1941 in Poole in Dorset, aged 75.
| Escutcheon: | Barry of ten Argent and Azure over all six escutcheons Sable three two and one each charged with a lion rampant of the first and for difference a crescent Gules charged with another crescent Or. |
| Crest: | Six arrows in saltire Or barbed and flighted Argent girt together with a belt Gules buckled and garnished Gold over the arrows a morion cap Proper. |
| Supporters: | On either side a lion Ermine gorged with a collar Or pendent therefrom an escutcheon the dexter Sable a lion rampant Argnet and the sinister Gules three tilting spears erect Or headed Argent. |
| Motto: | Sero Sed Serio[5] |