The rapid turnover of senatorial families during the Principate is a well-known phenomenon, but one which awaits satisfactory explanation. Comparative evidence shows the rate of turnover to have been unusually high. For example, the old aristocratic families of early modern Europe gave way to new at a much slower rate. Patterns of Roman property-holding and of the transmission of wealth from one generation to the next must have been closely associated with this rapid turnover. When an aristocratic family produced no (...) offspring who reached adulthood, the normal pattern of passing the bulk of the estate from one generation to the next within the family was interrupted. On the other hand, if a family produced many children, it might well become impoverished in the process of providing for all of them. Consequently, to perpetuate the family line with its status intact required careful financial and family planning. It was necessary to use or to take into account the various laws and customs regarding the family, including those regulating division of the estate among heirs, adoption, dowry and so on. (shrink)