DEFINITION of 'Ultimogeniture'
A system of inheritance whereby the youngest son gains possession of his deceased father's estate. Ultimogeniture was popular in many rural areas of medieval England, as well as parts of France, but it is rare today. Much more common is/was the tradition of primogeniture, or inheritance by the firstborn son.
BREAKING DOWN 'Ultimogeniture'
Ultimogeniture, primogeniture and other forms of progressive inheritance have long since given way to wills and other forms of correspondence that explicitly state the desires of the decedent. In days of old, however, one's inheritance rights were often tied to one's position of birth (as well as one's gender). Ultimogeniture is also known as postremogeniture, or junior right.