The process of granting subordinate tenancies that characterized feudal land tenure. The king or other sovereign would grant title to land to tenants-in-chief in return for certain services, who would in turn grant title to lesser tenants in return for services, and so on. Each tenancy thus created was subordinate to the one that preceded it, and title to land was not held absolutely, but rather "of" another.
See also "Substitution".
Added: Wed May 14 2008