Wiktionary
in fief
adv. (context historical English) As a heritable right, according to the prevailing feudal obligations.
Usage examples of "in fief".
Now the Harkonnens were leaving to be replaced by the House of Atreides in fief-complete -- an apparent victory for the Duke Leto.
Now the Harkonnens were leaving to be replaced by the House of Atreides in fief-complete &mdash.
My uncle has an estate there, he holds it in fief from the Baron of Borgan.
After all, he was directly in fief to the King who was this youngster’.
So Consar XV assigned Kettle to Rombil in fief, with the condition that a royal embassy and a royal military garrison would be kept at a place of the royal choosing and at Romblit expense.