Konrad Prószyński
 Konrad Prószyński (19 February 1851 – 8 July 1908) pen name Kazimierz Promyk was a Polish writer editor author of primers (textbooks) editor-in-chief of Gazeta Świąteczna (Holiday Gazette); the founder of secret Society for National Education (Towarzystwo Oświaty Narodowej) under foreign Partitions and the author of well received Pictorial Literacy (1879) primer. Was father of a Polish inventor Kazimierz Prószyński.