[1] Marian Zyndram-Kościałkowski was born in his family’s real estate of Pandėlys, located in the Novoalexandrovsky Uyezd of the Kovno Governorate of the Russian Empire (today Lithuania), to Karol and Maria Budrewicz.

In 1915, he joined Polish Military Organisation (POW), using nom de guerre Jerzy Orwid.

In April 1919, he came to Wilno (Vilnius), and soon afterwards, Józef Piłsudski ordered him to carry out sabotage attacks in the rear of the Red Army.

In September 1920, Zyndram-Kościałkowski was named commandant of the Bieniakonie Group, which was part of Volunteer Division (Colonel Adam Koc).

In 1920 - 1922, Zyndram-Kościałkowski commanded Second Department (Intelligence) of the General Staff of Central Lithuania’s Armed Forces.

In November 1930, following the parliamentary election Zyndram-Kościałkowski once again became a member of parliament (he was 17th on the list of the Nonpartisan Bloc for Cooperation with the Government (BBWR).

Police officers, trying to disperse a crowd of striking workers, used live ammunition and killed two men.

In June 3rd, Ukrainian nationalists murdered Bronislaw Pieracki, the Minister of Internal Affairs, which changed Koscialkowski's situation.

[3] In March 1934, after Marian Zyndram-Kościałkowski was transferred to the position of commissioner mayor of Warsaw, his duties were taken over, in accordance with the law, by vice-voivode Stanisław Michałowski.

After the death of Józef Piłsudski (12 May 1935), the Sanacja camp was divided into two factions: those gathered around President Ignacy Mościcki, and the followers of Marshal Edward Śmigły-Rydz.

In August 1935, Mościcki agreed with Minister Eugeniusz Kwiatkowski that changes must be made in the government of Walery Sławek.

Due to the economical difficulties of the mid-1930s, Eugeniusz Kwiatkowski, who was Minister of Industry and Trade, played a key role in the government.

New Prime Minister in Exile, General Władysław Sikorski sent him to a camp for political opponents, on the Isle of Bute in Scotland.