Bolesław Wieniawa-Długoszowski was born 22 July 1881 on his family's estate in Maksymówka near Stanisławów in Galicia, then part of the Austro-Hungarian Empire, (now Ivano-Frankivsk in Ukraine), the son of Bolesław Długoszowski (a railway engineer, who built the railway from Tarnów to Krynica-Zdrój via Bobowa) and Józefina, née Struszkiewicz.

He had an elder brother Kazimierz and two sisters; Teofila (Michalewska) the grandmother of Inka Bokiewicz, the girl who first adopted Wojtek the bear and Zofia (Kubicka).

There were good relations between the Jews of Bobowa and the Długoszowski family[3] (Kazimierz, the elder brother, appears with Grand Rabbi Ben Zion Halberstam on the cover of the book "Jewish Society in Poland"[4]).

In 1911 he was a founder, with the sculptor Stanisław Kazimierz Ostrowski [pl] of the Association of Polish Artists (Towarzystwo Artystów Polskich).

The next year this group joined the main Riflemen's Association (Związek Strzelecki "Strzelec"), where he met Józef Piłsudski in December 1913.

Unfortunately, he was arrested by the Soviet Cheka as a member of the Polish Military Organisation while on a French diplomatic train on its way from Moscow to Murmansk (and Paris).

He was freed thanks to the intervention of his future wife, Bronisława Wieniawa-Długoszowska, with the much-feared Cheka operative Yakovleva, then in charge of the prison.

As aide-de-camp of Józef Piłsudski during the Polish-Soviet War he helped him organize the Vilna Operation and Battle of Warsaw.

[12] He had a table reserved for him with leading Warsaw literary figures, such as Julian Tuwim and Jan Lechoń, at the mezzanine of the café Mała Ziemiańska [pl].

Finally, on 18 April 1942, Sikorski appointed Wieniawa minister plenipotentiary to the governments of Cuba, Dominican Republic, and Haiti, based in Havana.

On 20 June 1942 the National Committee of Americans of Polish Extraction (KNAPP) was founded in New York,[19] with Wieniawa listed as a founder.

[21] Some sources[22] say he committed suicide by leaping from an upper story of his New York City residence at 3 Riverside Drive, but the exact details of his death are debated among historians.

[23] One month later, on 14 August 1942, the Jewish ghetto in his home village of Bobowa was liquidated; about 700 inhabitants were killed in a mass execution in the Garbacz Forest.

[24][25] Wieniawa's remains were brought back to Kraków for reburial in the Rakowicki Cemetery, on 27 September 1990, where he now lies with his fallen comrades from the World War I Polish Legions.