In 1930–31, Bierut was sent by the Comintern to Austria, Czechoslovakia and Bulgaria. Many details of his activities are not reliably known, but from 1 October 1930 he was an instructor at the Executive Committee of the Comintern. He later claimed having lived in Moscow in 1927–32, except for a nine-month period in 1931, and having been enrolled at the Lenin School until 1930. Jerzy Eisler wrote: "... in light of the Soviet archival materials, in 1927–32 Bierut was a member of the Communist Party of the Soviet Union (Bolsheviks), with his party seniority counted from 1921, the moment he formally joined the Polish communist party." In Moscow he met Małgorzata Fornalska, a KPP activist. They became romantically involved and had a daughter, named Aleksandra, born in June 1932. Soon afterwards Bierut left for Poland, leaving in Moscow for the time being also his legal family, whom he had brought there.