This article undertakes the issue of the life and scientific activity of Bishop Prof. Walenty Wójcik, particularly his contribution to the development of Polish and world history of canon law, ecclesiastical patrimonial law and relations between Church and State. The author presents the biography of Walenty Wójcik beginning with the schooldays. The following stage have been described in the article: the seminary, studies and work at Catholic University of Lublin, academic achievements in subject of theory of canon law, ecclesiastical patrimonial law, relations between Church and State.