Zofia Grabska was born to Feliks and Stanisława Grabski at the family possession in the village of Borów.

From 1905 to 1920 she resided in Cieszyn Silesia, where she was active together with her husband Józef Kiedroń in Polskie Zjednoczenie Narodowe (Polish National Unity) political organization of right-wing character.

On 1 August 1905 she married Józef Kiedroń, Polish engineer and politician from Cieszyn Silesia, and settled down with him in Dąbrowa.

In 1920, Cieszyn Silesia was divided between Poland and Czechoslovakia by the decision of Spa Conference, in which Kiedroń was present as a Polish delegate.

Dąbrowa fell to Czechoslovakia and Zofia Kirkor-Kiedroniowa together with her husband left the Trans-Olza area, as they were active Polish activists; and stayed in Warsaw.