She also developed other influential relationships, including with Harold Sidney Harmsworth, 1st Viscount Rothermere, and promoted British support for Germany while living in London from 1932.

)[1] His full name was Franz Josef Rudolf Hans Weriand Max Stefan Anton von Hohenlohe-Waldenburg-Schillingsfürst.

Meanwhile, she had developed friendships and sometimes intimate relationships with powerful and influential men, including Harold Sidney Harmsworth, 1st Viscount Rothermere, a newspaper tycoon who owned the influential Daily Mail and Daily Mirror in London, and Joachim von Ribbentrop, who served as the German Ambassador to Britain in the 1930s.

According to The Daily Telegraph, Stephanie's "connections earned her the admiration of Hitler, Himmler and Von Ribbentrop.

"[5][citation needed] After Hitler gained power in Germany in 1933, MI6 circulated a report stating that the French secret service had discovered documents in the princess's flat in Paris that ordered her to persuade Lord Rothermere to campaign for the return to Germany of territory ceded to Poland at the end of First World War.

[5] In the 1930s, he paid Princess Stephanie an annual retainer of £5,000 (the equivalent of £200,000 today) to promote Germany and to develop support for it among her influential connections.

[5] During visits to Germany, she had become closely acquainted with members of the Nazi hierarchy, including Adolf Hitler, who called her his "dear princess".

When Wiedemann was appointed to the post of German Consul-General in San Francisco, she joined him in the United States in late 1937 and stayed for a time, returning to Europe the following year.

In 1938, the Nazis confiscated the property of Austrian Jews, including the Leopoldskron castle in Salzburg, which had been owned by theatre director Max Reinhardt.

[citation needed] Princess Stephanie returned to Britain in 1939, but after war was declared later that year, she left the country for fear of being arrested as a German spy.

She travelled to the United States, returning to her former lover Fritz Wiedemann, then German Consul in San Francisco.

[1] In October 1941, the FBI prepared a memo describing her as "extremely intelligent, dangerous and clever," and claiming that as a spy, she was "worse than ten thousand men".

[1] Summarizing what was known about her, it recommended that her deportation not be further delayed and noted that the British and the French, in addition to the United States intelligence community, suspected her of being a spy for Germany.

After the Japanese attack on Pearl Harbor and the formal entry of the US into World War II, the FBI arrested Princess Stephanie, interning her at a facility in Philadelphia and later at a Texas camp for enemy aliens.

On January 10, 1942, the enemy alien hearing board in Philadelphia recommended to Attorney General Biddle that she be interned for the duration of the war, based on an interview the previous month.

[citation needed] In the postwar era, Princess Stephanie returned to Germany, where she established new, influential connections.