Which is the best summary statement of these final three paragraphs?

There came a great rattling of chains and bolts, and the door was cautiously opened. The man was a stooping, narrow-shouldered, clay-faced creature, and his age might have been anything between fifty and seventy. His nightcap was of flannel, and so was the nightgown that he wore over his ragged shirt. He was long unshaved. I took him for a servant.

13He let me in and then asked for the letter. I told him the letter was for Mr. Balfour, not for him.

14“And who do ye think I am?” he said. “Your father was my brother, and I am your uncle, Davie.”