In my family, of rural descent, over some centuries the sons were named Johann [John] and had to have a second first name to distinguish them from oneanother.
This usage stopped in every branch when a son was forced to join the nearby university and try his chances as a minister.
Both my daughters I had baptized with four first names, so they could change their names in case their first first name should displease them, but they are content by them, since their parents made such good choices. Thy are now called always by the first name.