Question: Where was the mother of the Adolf Hitler relative who served in the United States Navy born?

Context articles: Martin Kosleck
Bridget Dowling
HMS Willowherb (K283)
William Patrick Stuart-Houston
Analysis of the Personality of Adolph Hitler
Saturn (alligator)
Frank Knox
The Man Who Crossed Hitler
Hitler Sites
Mariners of the Sky

Martin Kosleck (March 24, 1904 – January 15, 1994) was a German film actor.
 Like many other German actors, he fled when the Nazis came to power.
 Inspired by his deep hatred of Adolf Hitler and the Nazis, Kosleck would make a career in Hollywood playing villainous Nazis in films.
 While in the United States, he would appear in more than 80 films and television shows in a 46-year span.
 His icy demeanor and piercing stare on screen made him a popular choice to play Nazi villains.
 He portrayed Joseph Goebbels, Adolf Hitler's propaganda minister, five times, and also appeared as an SS trooper and a concentration camp officer.
Bridget Elizabeth Hitler, née Dowling (alternative Brigid) (3 July 1891 – 18 November 1969), was Adolf Hitler's sister-in-law via her marriage to Alois Hitler, Jr..
 She was the mother of Alois Hitler's son William Patrick Hitler.
 She was born and raised in Dublin, Ireland.
During the first year and more after America entered the war against the Axis, the United States Navy suffered from an acute shortage of warships, particularly of antisubmarine warfare and escort types.
 To fill that need, an extensive ship construction and acquisition program was inaugurated.
 Part of that program consisted of placing orders with British and Canadian firms already tooled up to produce Flower-class corvette .
 Vitality" (PG-100) was such a ship.
 However, before she was launched on 15 April 1943 by the Midland Shipyard in Canada, she was traded to the Royal Navy under the terms of the lend-lease agreement for a similar ship being constructed in Canada.
 The British renamed her HMS "Willowherb, and she served in the Royal Navy for the duration of the war.
 On 11 June 1946, she was returned to the custody of the United States Navy.
 Though carried on the Navy list as PG-100 following the war, "Vitality" never actively served the United States Navy.
 She remained idle until sold on 7 May 1947.
 To whom she was sold and for what purpose is unknown, but one source indicates that she was not scrapped until 1961.
William Patrick "Willy" Stuart-Houston ("né" Hitler; 12 March 1911 – 14 July 1987) was a British nephew of Adolf Hitler who worked in Germany and later emigrated to America in 1939.
 Born to Adolf's brother, Alois Hitler, Jr. and his first wife, Bridget Dowling, in Liverpool, England, William Hitler later moved to Germany, but subsequently emigrated to the United States, where he served in the United States Navy in World War II.
Analysis of the Personality of Adolph Hitler: With Predictions of His Future Behavior and Suggestions for Dealing with Him Now and After Germany's Surrender was a report prepared by Henry A. Murray for the United States Office of Strategic Services during World War II.
 It was one of two psychoanalytic reports prepared for the OSS on Nazi Germany leader Adolf Hitler; the other was "A Psychological Analysis of Adolph Hitler: His Life and Legend" (later published in book form under the title "The Mind of Adolf Hitler").
Born in 1936 in the state of Mississippi, United States, Saturn soon was brought to Germany, residing at the Berlin Zoological Garden.
 It was here his association with Adolf Hitler originated, as Hitler reportedly enjoyed visiting the zoo and especially liked the alligator.
 However, while Hitler may have viewed Saturn at the zoo, he was never Hitler's personal pet.
 During World War II, the Berlin zoo was destroyed, but Saturn was discovered by British soldiers, who then gave the alligator to the Soviets in 1946.
 He has lived at the Moscow Zoo ever since, and has become one of the zoo's most famous and popular attractions.
William Franklin Knox (January 1, 1874 – April 28, 1944), known as Frank Knox, was an American newspaper editor and publisher.
 He was also the Republican vice presidential candidate in 1936, and Secretary of the Navy under Franklin D. Roosevelt during most of World War II.
 Knox was mentioned by name in Adolf Hitler's speech of December 11, 1941, in which Hitler asked for a German declaration of war against the United States.
The Man Who Crossed Hitler is a 2011 BBC film set in Berlin in the summer of 1931, dramatising the true story in which lawyer Hans Litten subpoenas Adolf Hitler as a witness in the trial of some Nazi thugs.
 Hitler has formally renounced the use of political violence, and the young lawyer sees a chance to expose the Nazi leader's deceptions to the German establishment, thereby discrediting both Hitler and the Nazi Party.
 The film was given an alternative title Hitler on Trial which was used when the Public Broadcasting Service in the United States aired the work.
Hitler Sites: A City-by-City Guidebook (Austria, Germany, France, United States) by Steven Lehrer is a history and tour of European and American sites related to Adolf Hitler These sites cannot be found in standard guidebooks.
 Their descriptions comprise a topographical biography of the German dictator and can clarify who and what he actually was.
 Among the many sites are the middle-class homes and apartments where he grew up in rural Austria and Linz; the tenements and shelters he inhabited before ending up homeless, lice-infested, freezing and penniless in the streets of Vienna; the expansive Munich apartment where he lived as a rising politician and as Führer; and his country home, the Berghof, in Berchtesgaden.
 Also included are the Führerbau, where he signed the Munich Accords, and the New York home of his reviled nephew, William Patrick Hitler, who enlisted in the US Navy to fight against his uncle during World War II.
Mariners of the Sky (also known as Navy Born) is a 1936 American comedy-drama film directed by Nate Watt, in his directorial debut.
 The film stars William Gargan , Claire Dodd and Douglas Fowley.
 Filmed with the cooperation of the U.S. Navy, it was a mild recruiting film in an era when the United States military was gearing up for a future war.