Question: When was the German fight pilot to which the The Blond Knight of Germany book was dedicated born? 

Context paragraphs:
Erich Hartmann: Erich Alfred Hartmann (19 April 1922 – 20 September 1993), nicknamed "Bubi" ("The Kid") by his German comrades and "The Black Devil" by his Soviet adversaries, was a German fighter pilot during World War II and the most successful fighter ace in the history of aerial warfare.  He flew 1,404 combat missions and participated in aerial combat on 825 separate occasions.  He claimed, and was credited with, shooting down 352 Allied aircraft—345 Soviet and 7 American—while serving with the "Luftwaffe".  During the course of his career, Hartmann was forced to crash-land his fighter 14 times due to damage received from parts of enemy aircraft he had just shot down or mechanical failure.  Hartmann was never shot down or forced to land due to enemy fire.

Nesthäkchen and Her Grandchildren: Else Ury's Nesthäkchen is a Berlin doctor's daughter, Annemarie Braun, a slim, golden blond, quintessential German girl.  The ten book follows Annemarie from infancy (Nesthäkchen and Her Dolls) to old age and grandchildren (Nesthäkchen with White Hair).  Volume 9 (1924) describes Anne Marie's life as her youngest child, Ursel, Ursel's husband and children, return to Germany after 16 years in Brazil.

Friedrich Obleser: Friedrich-Erich Obleser (21 February 1923 – 5 June 2004) was a German general in the Bundeswehr.  During World War II, he served as a fighter pilot in the Luftwaffe.  A fighter ace, Obleser was credited with 120 aerial victories and was a recipient of the Knight's Cross of the Iron Cross of Nazi Germany.  For his post-war service in the German Air Force, he received the Grand Cross with Star of the Order of Merit of the Federal Republic of Germany.

Heinz Rökker: Heinz Rökker (born 20 October 1920) is a former night fighter pilot in the "Luftwaffe" of Nazi Germany during World War II.  He was a recipient of the Knight's Cross of the Iron Cross with Oak Leaves.  The Knight's Cross (German: "Ritterkreuz" ), and its variants were the highest awards in the military and paramilitary forces of Nazi Germany during World War II.  He claimed 64 enemy aircraft (63 at night) shot down, all were British bombers.  Rökker was the eighth most successful night fighter pilot in the history of aerial warfare.

Kurt Dahlmann: Kurt Dahlmann (born 4 March 1918) is a retired German pilot, attorney, journalist, newspaper editor and political activist.  He was also a recipient of the Knight's Cross of the Iron Cross with Oak Leaves (German: "Ritterkreuz des Eisernen Kreuzes mit Eichenlaub" ).  The Knight's Cross of the Iron Cross and its higher grade Oak Leaves were awarded to recognise extreme battlefield bravery or successful military leadership.

Günther Radusch: Günther Radusch (11 November 1912 – 29 July 1988) was a German pilot in the "Luftwaffe" pilot during World War II.  He was a recipient of the Knight's Cross of the Iron Cross with Oak Leaves of Nazi Germany.  Radusch is credited with 65 aerial victories.  He claimed one victory during the Spanish Civil War, the remaining 64 victories were all claimed at night in over 140 combat missions, including the destruction of 57 four-engine bombers.

The Blond Knight of Germany: The Blond Knight of Germany is a book by the American authors Trevor J. Constable and Raymond F. Toliver dedicated to the life and career of the German fighter pilot of World War II, Erich Hartmann.  Originally released in the United States in 1970, it was published in Germany the next year, as Holt Hartmann vom Himmel! .

Siegfried Barth: Siegfried Barth (23 January 1916 – 19 December 1997) was a German bomber pilot in the Luftwaffe during World War II and commander of the fighter-bomber wing Jagdbombergeschwader 32 (JaBoG 32) of the German Air Force.  He was a recipient of the Knight's Cross of the Iron Cross, awarded by Nazi Germany to recognise extreme battlefield bravery or successful military leadership.  As a Bundeswehr officer, he served at the NATO Supreme Headquarters Allied Powers Europe (SHAPE) from 1969 to 1972.

Bernhard Jope: Bernhard Jope (10 May 1914 – 31 July 1995) was a German bomber pilot during World War II.  He was a recipient of the Knight's Cross of the Iron Cross with Oak Leaves of Nazi Germany.  As part of Kampfgeschwader 40 (bomber wing), Jope flew missions across the North Sea and Atlantic Ocean in support of the German navy, damaging in October 1940 the RMS "Empress of Britain" .  In 1943, he led Kampfgeschwader 100 in the attacks on the Italian battleship "Roma" , the British battleship HMS "Warspite" and cruiser HMS "Uganda" , and the US cruiser USS "Savannah" .

Ulrich Diesing: Ulrich Diesing (12 March 1911 – 17 April 1945) was a German pilot in the Luftwaffe during World War II.  He was a recipient of the Knight's Cross of the Iron Cross of Nazi Germany.  17 April 1945, Ulrich Diesing was killed in an accident near Boizenburg, Nazi Germany.  During his career he was credited with 15 aerial victories.

Supporting paragraphs: The Blond Knight of Germany Erich Hartmann
Answer: 19 April 1922