 Leon Wasilewski

Leon Wasilewski (1870–1936) was an activist of the Polish Socialist Party (PPS), a coworker of Józef Piłsudski, Polish Minister of Foreign Affairs, designer of much of Second Polish Republic policy towards Eastern Europe, historian and father of Halszka Wasilewska and of Wanda Wasilewska.Born on 24 August 1870 in Saint Petersburg, to an impoverished gentry family with roots in Livonia and Samogitia.