A more thorough explanation:

Definition: An advowee is a patron who holds an advowson, which is the right to appoint a person to a church office or benefice. The advowee paramount is the highest patron, which is usually the sovereign.

Example: The local lord was the advowee of the village church, which meant he had the right to appoint the priest.

Explanation: In this example, the lord of the village holds the advowson and is therefore the advowee of the church. He has the power to choose who will serve as the priest in the church.