Question: Ernst John von Freyend served during World War II as the adjutant to a Field Marshal born in which year ?

Context paragraphs:
Walther von Reichenau: Walter Karl Ernst August von Reichenau (8 October 1884 – 17 January 1942) was a field marshal in the Wehrmacht of Nazi Germany during World War II.  A professional solider and veteran of World War I and the Reichswehr, he was one of twelve officers promoted at the 1940 Field Marshal Ceremony, and the most junior.  An avid sportsman and athlete he was a member of the International Olympic Committee.  He is widely cited for his support of genocidal policies on the Eastern front and for his Severity Order, which he issued while in command of the German 6th Army.

Ernst John von Freyend: Ernst John von Freyend (25 March 1909– 24 March 1980) was a German Oberkommando der Wehrmacht officer who served during World War II as the adjutant to Field Marshal Wilhelm Keitel.  He is notable for unwittingly helping to place the 20 July plot bomb that was intended to kill Adolf Hitler.

Ronald Forbes Adam: General Sir Ronald Forbes Adam, 2nd Baronet (30 October 1885 – 26 December 1982) was a senior British Army officer whose career spanned World War I and World War II.  He had an important influence on the conduct of the British Army in World War II as a result of his long tenure as Adjutant General, responsible for the army's organisation and administration, as well as through being a close confidant of Field Marshal Sir Alan Brooke, the Chief of the Imperial General Staff (CIGS), the professional head of the British Army, from December 1941 until the end of the war.

Günther von Kluge: Günther von Kluge (30 October 1882 – 19 August 1944) was a German field marshal during World War II.  Kluge held commands on both the Eastern and Western Fronts.  Although Kluge was not an active conspirator in the 20 July plot, he committed suicide on 19 August 1944, after having been recalled to Berlin for a meeting with Hitler in the aftermath of the failed coup.  He was replaced by Field Marshal Walter Model.

Wilhelm Keitel: Wilhelm Keitel (22 September 1882 – 16 October 1946) was a German field marshal who served as Chief of the Armed Forces High Command ("Oberkommando der Wehrmacht" or OKW) in Nazi Germany during World War II.  According to David Stahel, Keitel was "well known and [...] reviled as Hitler's dependable mouthpiece and habitual yes-man" among his military colleagues.

Henry Balding Lewis: Major General Henry Balding Lewis, CBE, (May 8, 1889 – May 21, 1966) was a United States Army officer who served in the Border War, Tientsin China, World War I and World War II.  He served as Adjutant General, United States Military Academy at West Point, Adjutant General 1st Infantry Division at Schofield Barracks in Hawaii.  In World War II he was Adjutant General and Deputy Chief of Staff to General Omar Bradley for the 12th Army Group and later served with General Bradley in the Veterans Administration.

Sarath Fonseka: Field Marshal Gardihewa Sarath Chandralal Fonseka, RWP, RSP, VSV, USP, MP, rcds, psc (Sarath Fonseka) (Sinhalese: ෆීල්ඩ් මාෂල් සරත් ෆොන්සේකා , Tamil: பீல்ட் மார்ஷல் சரத் பொன்சேகா , born 18 December 1950) is a Sri Lanka's highest rank soldier and politician who was the first Sri Lankan Army officer to be promoted to the rank of Field Marshal.  He was the eighteenth Commander of Sri Lankan Army, and under his command the Sri Lankan Army ended the 26-year Sri Lankan Civil War in 2009, defeating the rebel Liberation Tigers of Tamil Eelam; he thereafter briefly served as the Chief of Defence Staff.  After retiring from the Army with the rank of General, he entered politics as the common opposition candidate in the 2010 presidential election contesting against President Mahinda Rajapaksa.  Following his controversial defeat in the presidential election he was elected to Parliament in the general election that followed.  Soon after he was made a political prisoner and lost his parliamentary seat.  Fonseka supported Maithripala Sirisena in the 2015 presidential election and following his victory, the newly appointed President Sirisena gave Fonseka a full pardon reinstating his civic rights, military rank and decorations.  Later he was promoted to the newly created rank of Field Marshal on 22 March 2015.  On 9 February 2016 he was appointed to Parliament, and he was appointed Cabinet Minister for Regional Development on 25 February 2016.

Wilhelm Burgdorf: Wilhelm Emanuel Burgdorf (15 February 1895 – 2 May 1945) was a German general in the Wehrmacht during World War II, who served as a commander and staff officer in the German Army (Wehrmacht) (army).  In October 1944, Burgdorf assumed the role of the Chief of the Army Personnel Office ("Heerespersonalamt") and Chief Adjutant to Adolf Hitler.  In this capacity, he played a role in the forced suicide of Field Marshal Erwin Rommel.  Burgdorf committed suicide in the "Führerbunker" on 2 May 1945 at the conclusion of the Battle of Berlin.

Jan Smuts in the South African Republic: Field Marshal Jan Christian Smuts, OM, CH, ED, KC, FRS (24 May 1870 – 11 September 1950) was a prominent South African and Commonwealth statesman, military leader, and philosopher.  He served as a Boer General during the Boer War, a British General during the First World War and was appointed Field Marshal by King George VI during the Second World War.  In addition to various cabinet appointments, he served as Prime Minister of the Union of South Africa from 1919 until 1924 and from 1939 until 1948.  From 1917 to 1919 he was one of five members of the British War Cabinet, helping to create the Royal Air Force.  He played a leading part in the post-war settlements at the end of both world wars, making significant contributions towards the creation of the League of Nations and the United Nations.  He did much to redefine the relationship between Britain and the Dominions and Colonies, leading to the formation of the British Commonwealth.

Svetozar Boroević: "K.u.k. Feldmarschall" Svetozar Boroević (or Borojević) (13 December 1856 – 23 May 1920) was an Austro-Hungarian field marshal who was described as one of the finest defensive strategists of the First World War.  He was given Austrian nobility as Baron Boroëvić von Bojna, and later rising to the rank of Field Marshal before the end of the First World War in 1918.

Supporting paragraphs: Ernst John von Freyend Wilhelm Keitel
Answer: 1882