But I must return it to its proper owner.

All names will soon be restored to their proper owners.

"They'll all be returned to their proper owners when Selbert is through with them."

"We might have to give her back to her proper owners."

I've been sent to your planet by the proper owners in order to retrieve it.

I believe the proper owner is not likely to come looking for it now.

I trust you to deliver it to its proper owners.

Most also seem to require being "invited" into a particular area or building by the proper "owner" of the territory.

The bank did say that all such money has been returned to the proper owners.

The enemy can take it and use it against its proper owner.