William Patrick Stuart-Houston

William Patrick Hitler was born in the Toxteth Park district of Liverpool, the son of Alois Hitler, Jr. and Irish-born Bridget Dowling. The couple had met in Dublin when Alois was living there in 1909; they married in Marylebone in London and moved back north to Liverpool, where William Patrick was born in 1911.

The family lived in a flat at 102 Upper Stanhope Street, which was destroyed in the last German air raid of the Liverpool Blitz on 10 January 1942. Dowling wrote a manuscript called My Brother-in-Law Adolf, in which she claimed Adolf Hitler moved to Liverpool with her, remaining from November 1912 to April 1913, in order to dodge conscription in Austria. The book is largely considered by Hitler's biographers to be a work of fiction. At the time, Adolf was residing in the Meldemannstraße dormitory.

In 1914, Alois left Bridget and their son for a gambling tour of Europe. He later returned to Germany. Unable to reconnect with them due to the outbreak of World War I, Alois abandoned the family, leaving William to be brought up by his mother. He remarried bigamously, but in the mid-1920s he wrote to Bridget asking her to send William to Germany's Weimar Republic for a visit. She finally agreed in 1929, when William was 18. Alois had had another son, Heinz Hitler, by his German wife. Heinz, in contrast to William, became a committed Nazi and in 1942 died in Soviet captivity.

In 1933, William Patrick Hitler returned to Germany in an attempt to benefit from his uncle's rise to power. His uncle found him a job at the Reichskreditbank in Berlin. Later, William worked at an Opel automobile factory, and later still as a car salesman. Dissatisfied with these jobs, William persisted in asking his uncle for a better job, writing to him with blackmail threats that he would sell embarrassing stories about the family to the newspapers unless his "personal circumstances" improved.

In 1938, Adolf asked William to relinquish his British citizenship in exchange for a high-ranking job. Expecting a trap, William fled Nazi Germany; he again tried to blackmail his uncle with threats. This time, William threatened to tell the press that Hitler's alleged paternal grandfather was actually a Jewish merchant. Returning to London he wrote an article for Look magazine titled "Why I Hate my Uncle." William allegedly did return, briefly, to Germany in 1938. It is unknown what exactly William's role in late-1930s Germany was.

William left Germany in January 1939 and visited the United States with his mother on a lecture tour at the invitation of publisher William Randolph Hearst. He and his mother were stranded in the U.S. when World War II broke out. After making a special request to President Franklin D. Roosevelt, William was eventually cleared to join the United States Navy in 1944, and moved to Sunnyside, Queens in New York.

William Patrick Hitler served in the United States Navy during World War II as a Pharmacist's Mate (a designation later changed to Hospital Corpsman) until he was discharged in 1947. He was wounded in action during the war and awarded the Purple Heart.

After being discharged from the Navy, William Hitler changed his surname to "Stuart-Houston".

Stuart-Houston, in 1947, married Phyllis Jean-Jacques, who had been born in Germany in the mid-1920s. After their relationship began, William and Phyllis, along with Bridget, tried for anonymity in the United States. They moved to Patchogue, Long Island, where William used his medical training to establish a business that analyzed blood samples for hospitals. His laboratory, which he called Brookhaven Laboratories, was located in his home, a two-story clapboard house at 71 Silver Street, Patchogue. The couple had four sons: Alexander Adolf (b. 1949), Louis (b. 1951), Howard Ronald (1957–1989), and Brian William (b. 1965).

William Stuart-Houston died on July 14, 1987, in Patchogue. His remains were buried next to his mother's, at the Holy Sepulchre Cemetery in Coram, New York. His widow, Phyllis Jean-Jacques Stuart-Houston, died in 2004.

Howard Ronald Stuart-Houston, a Special Agent with the Criminal Investigation Division of the Internal Revenue Service, died in an automobile accident on September 14, 1989, leaving behind no children. He is buried in the Holy Sepulchre Cemetery in Coram.

None of Stuart-Houston's sons have had children. His son Alexander, who became a social worker, said that, contrary to speculation, there was no pact to intentionally end the Hitler bloodline.

The family's story and Bridget's memoirs were first published by Michael Unger in the Liverpool Daily Post, 1973. Unger also edited Bridget Dowling's memoirs, which were first published as The Memoirs of Bridget Hitler in 1979; a completely updated version, titled The Hitlers of Liverpool, was published in 2011.

Beryl Bainbridge's 1978 novel Young Adolf depicts the alleged 1912–13 visit to his Liverpool relatives by a 23-year-old Adolf Hitler. Bainbridge adapted the story into a play as The Journal of Bridget Hitler with director Philip Saville, which was broadcast as a Playhouse (BBC 2) in 1981.

Grant Morrison and Steve Yeowell's 1989 comic book The New Adventures of Hitler is likewise based on the Liverpool visit.

In October 2005, The History Channel aired a one-hour documentary titled Hitler's Family, in which William Patrick Hitler is prominently profiled along with other relatives of Adolf Hitler.

In April 2006, Little Willy, a play by Mark Kassen examining the life of William Patrick Hitler, opened at the Ohio Theater in New York.