Doctoral thesis "Popular piety in the parish Brdovec in the 17th and 18th Century" is the first that deals with this specific topic for that area, so in this sense, this thesis constitutes a pioneering venture that could serve as future researcher’s directions for new socio - religious studies. The backbone of thesis makes extensive analysis of 60 miraculous healings accomplished through the intercession of St. Vitus and St. Barbara recorded in the oldest book of the parish home births in the period from year 1677 till 1779. Another valuable source is the book Members of the confraternity of St. Barbara who have existed in the parish Brdovec from 1676 till 1814. The transcript of 3.327 confraternity members who are analyzed in this research is added to the enclosures. Third important source for the study of popular piety in parish Brdovec are canonical visitation from 1622 till 1777 in which they recorded information about the religious activities of priests and parishioners. Scientific elaboration of these three unpublished sources created the basis for a more detailed analysis of the socio - religious events in Brdovec area in this period. It should be emphasized that parish Brdovec even today has documentation from the 17th and 18th century which was analyzed in this study. Furthermore, the rich library of parish Brdovec, which contain about 130 books from the 17th and 18th century, were used in everyday practice by Brdovec priests was also examined. The results of this study in which primary sources were analyzed on the basis of modern historiographic method are presented also by charts, illustrations and tables. Besides abovementioned sources and the review on devotion in the former published source materials and literature, this thesis represents the most comprehensive overview of historical events in Brdovec area so far.