Rydleŭski was born in the village of Uljanavičy, Mogilev province of the Russian Empire (now Viciebsk Region of Belarus).
In 1917-20 he studied in the Slucak gymnasium [be] and was a member of a cultural and educational group 'Fern Flower' (Belarusian: Папараць-кветка).
In 1923 he graduated from the Belarusian Gymnasium in Vilna and in 1929 a polytechnic institute in Poděbrady, Czechoslovakia.
[1][2] Rydleŭski was one of the youngest combatants in the Slucak Uprising of 1920, an anti-Bolshevik pro-independence military campaign in central Belarus.
[5] On 27 November 2010, an anniversary of the Słucak Uprising, the Association of Belarusians in Great Britain installed a new tombstone on his grave.