Tran, if you would stop trying to prove your right or whatever your trying to prove, and read what you yourself cited:
You cited, “Hannah v. Peel, King's Bench, 1945 K.B. 509
The owner of the property did not own (or, even know of) the unattached "found" property so the finder who possessed the land had rights against all but the true owner.”
The key words are, “ against all but the true owner”.
The statues that Tran has cited dealt with items belonging to an unknown person for unknown reasons.
BUT, in this case, the unknown person is very well known that it is the LL.
Tenant knows that property found in the home they are renting belongs to the LL, true owner.
I don’t care if the spiders have it spun in the web in the attic, it still belongs to the LL.