Własnowolski was born on 29 November 1916[3] in Kraków, which was then part of the Austro-Hungarian Empire. His father, Władysław Własnowolski, was a railway clerk.[4]
Własnowolski joined the Polish Air Force in October 1936 and started training to be a fighter pilot in October 1937. In June 1939 he was posted to 122 Squadron, which flew PZL P.11c fighter aircraft and was part of the III/1 Dywizjon Myśliwski [pl].[4]
In the September Campaign in 1939, 122 Squadron was transferred to an airfield at Balice, west of Kraków. On 2 September, Własnowolski shared the shooting down of a Dornier Do 17 bomber. After the USSR invaded Poland on 17 September, III/1 Division evacuated to Romania.[4]
On 15 October 1939 a large group of Polish airmen including Własnowolski left Romania by ship from the Black Sea port of Balchik. They reached Beirut in French-ruled Lebanon, where they joined a French ship that reached Marseille on 29 October. In France, Własnowolski was initially posted to Salon-de-Provence Air Base.[4]
On 17 September, Własnowolski was transferred to No. 213 Squadron,[1] which also flew Hurricanes from Tangmere. On 1 November 1940 a Bf 109 of I/JG 2 shot him down over the village of Stoughton, West Sussex. He crashed fatally on a farm near the village.[3]
Tadeusz Jerzy Krzystek, Anna Krzystek: Polskie Siły Powietrzne w Wielkiej Brytanii w latach 1940-1947 łącznie z Pomocniczą Lotniczą Służbą Kobiet (PLSK-WAAF). Sandomierz: Stratus, 2012, p. 614. ISBN9788361421597
Jerzy Pawlak: Absolwenci Szkoły Orląt: 1925-1939. Warszawa: Retro-Art, 2009, p. 223-224. ISBN8387992224
Piotr Sikora: Asy polskiego lotnictwa. Warszawa: Oficyna Wydawnicza Alma-Press. 2014, p. 345-348. ISBN9788370205607