You searched for: “claimant”
claimant (s) (noun), claimants (pl)
An individual who declares ownership or possession of something: The judge listened carefully to the claimant who was urging the court to recognize her ownership of the lakeside property.
The prospector was the claimant to the land and its resources where gold was found.
Several workers were claimants of unemployment benefits when the business they worked for went broke.