Herbert Enke Wilhelm Engelsing (born 2 September 1904 in Overath, died 10 February 1962 in Konstanz) was a right-wing German Catholic lawyer[1] in Berlin and resistance fighter against the Nazi regime.

[2] In 1938, Engelsing and his wife Ingeborg became close friends with Libertas and Harro Schulze-Boysen who were part of a resistance organisation against the Nazis.

Engelsing did not receive permanent residency due to false accusations of being the head of a Soviet sleeper cell.

[3] When she went for her race characteristics exam, and although the photographer attempted to portray her as tall, blond and slim, she was refused permission to marry.

[3] Dorsch was a childhood friend of Hermann Göring and through her advocacy managed to persuade Goring to present the couple's case to Hitler.

[7] Beginning in 1943, the couple began to change their address, moving numerous times over the next two years, so that Ingeborg wasn't drafted into a Reich women's work unit (Berufsausbildungsprogramm Ost).

Ingeborg became particularly close friends with Libertas,[17] who confided in her about her slightly scandalous past; about her mother running away with her art tutor and her parents divorcing.

[22] In 12–13 May 1940, the couple spent the weekend at Liebenberg castle, the family home of Libertas Schulze-Boysen, where they were joined by the Schumachers, Günther Weisenborn[22] and other friends in the group.

In early 1941, when Schulze-Boysen began to spy for the Soviet Union, Engelsing broke of their friendship, as he believed it was an act of betrayal.

In the spring of 1945, agents of the CIC, the intelligence service of the US Army, operating out of Zurich, contacted Engelsing and used him as a source of information on members of the Nazi state.

At the beginning of 1950, Engelsing made himself available as a witness in the preliminary proceedings against the then representative of the prosecution in the "Red Orchestra Trial", the Nazi apologist and General Judge Manfred Roeder.

In addition to the usual mandates, he also represented victims of Nazi Aryanization as well as German and French Sinti families in restitution proceedings.