The topic of this paper is kinship through being godfather, which as per universally spread comprehension with Serbs represents the form of spiritual kinship, and the role which kinship through being godfather can accomplish below its phenomenological level. As the example of these roles taking into consideration is taken the acting as godfather of the members of royal family the Karađorđević during the baptism of children born in Kosovo and Metohija pursuant the details contained in the archive material. What the author reaches by his structural-functional analysis is the notice of the series of functions for which it can be said that acting as godfather has been performed. These functions are to be latent, not perceivable at first site and are to be demonstrated at two levels: at the level of broader social community and at the level of family of the child which has been baptised. At the level of broader social community the functions of acting as godfather of the family Karađorđević are as follows: reproductive, integrative (socially and spiritually), political; reproductive function is to be reflected in the spur of the birth-rate, integrative in the overcome of social and confessional differences in the society, and political in the affirmation of ruling dynasty and existent state establishment among citizens. At the level of family functions of acting as godfather are as follows: social, economic existential; the social one is to be noticed in the confirmation and emphasise of social credibility of the family, and economic and existential in the gain of some financial resources necessary for existence in non favorable life conditions. In accordance with the above mentioned, the author comes to the conclusion that based on the broadly accepted comprehension as per which the kinship through being godfather represents above all a spiritual relationship and the acting as godfather of the Karađorđević family has got the character of social ties establishment, which also has got its applicable value and as this fits to the concept of kinship through being godfather with Serbs, and within which the relationship of kinship through being godfather is treated as elevated, spiritual and notwithstanding, from the other side, that relationship is often found in the' service of the realization of some practical aims.