In this Thesis titled, The life cycle of Vodnjan's parish: the number of christenings, marriages, and deaths in the 19th century are analyzed data from the registry books ,containing every christening, marriage and death in the county of Vodnjan throughout the period of 1816 to 1860, even more so detailed from the period of 1850 to 1860. This thesis analyzes the number of births and christenings, the names of children that are born,priests and midwives including their role during the births or christenings,and also the professions of parents and godparents. Afterwards, there are the analyses of marriages in Vodnjan, more accurately the date when newlyweds were joined in marriage. The end of the thesis analyzes the deaths and diseases that inflicted the population of Vodnjan. The thesis is accompanied by tables that show the number of christenings and births per year also showing the number of children by gender, the number of twins born names of the children, the priest who christened them, the number of christened, the names of the midwives and the number of children they accompanied during birth. It also shows the number of weddings the age of the newlyweds and the date they got married also including the dates of each death according to the gender and age. This thesis presents a summary of the christenings,marriages,and deaths in the mid 19th century in a small town southwest of the Istrian peninsula named Vodnjan. Other then the data from the registry books of Vodnjan here are also listed the authors that researched and studied other registry books from different places and their comparisons.