Selling a cheeseburger

What is the “narrow cell” in line 15 of “elegy written in a country churchyard”

What is wong with this sentence cameron, who has an extreme and unreasonable suspicion of other people and their motives, suffers from paranoia which is a psychological disorder characterized by delusions of persecution or grandeur, was absolutely sure that someone was following him even though he was absolutely alone and hadn't seen a car for miles and miles.

Do eilinor and marianne each end up with the best husband possible? give reasons for your answer.