Bronisława Wieniawa-Długoszowska (née Kliatchkin; 9 June 1886 – 26 August 1953) was a Polish wartime nurse of Russian Jewish origin.

Berenson was the defender in the Tsarist courts of Felix Dzerzhinsky, who was to be the founder of the Cheka, the first Soviet secret police agency.

These proved the existence of an import business from Sweden run by the Bolsheviks, but it was the evidence of contact with known German agents which was damming.

On 4 July, Pereverzev shared the information gained from the telegrams with General Peter Polovtsov, commander of the Petrograd garrison, some newspaper editors and other ministers.

According to Sean McMeekin, revulsion among the soldiers at the knowledge that Lenin was in contact with the enemy brought them on the side of the provisional government and ended the coup attempt.

According to McMeekin, recently opened Russian archives contain evidence, from the investigation triggered by the telegrams, that the import business was a front for laundering money being sent by the German government to the Bolsheviks.

The rest of the year they lived in their official residence; a hunting lodge in Łazienki Park in the center of Warsaw.

When, in 1938, General Bolesław Wieniawa-Długoszowski was sent to Rome as Polish ambassador to the government of Benito Mussolini, Bronisława accompanied him.

[4] Bronisława returned to Europe after the war and died in Paris in August 1953 of the complications of a gall bladder operation.