what does lord henry find out about dorian's background from lord henry's uncle?

Lord Henry learns that Dorian's father was penniless and killed in a duel shortly after his marriage. His mother, however, was an heiress, and Dorian stood to inherit.

"Kelso's grandson!" echoed the old gentleman. "Kelso's grandson! ... Of course.... I knew his mother intimately. I believe I was at her christening. She was an extraordinarily beautiful girl, Margaret Devereux, and made all the men frantic by running away with a penniless young fellow—a mere nobody, sir, a subaltern in a foot regiment, or something of that kind. Certainly. I remember the whole thing as if it happened yesterday. The poor chap was killed in a duel at Spa a few months after the marriage. There was an ugly story about it. They said Kelso got some rascally adventurer, some Belgian brute, to insult his son-in-law in public—paid him, sir, to do it, paid him—and that the fellow spitted his man as if he had been a pigeon. The thing was hushed up, but, egad, Kelso ate his chop alone at the club for some time afterwards. He brought his daughter back with him, I was told, and she never spoke to him again. Oh, yes; it was a bad business. The girl died, too, died within a year. So she left a son, did she? I had forgotten that. What sort of boy is he? If he is like his mother, he must be a good-looking chap."

"He is very good-looking," assented Lord Henry.

"I hope he will fall into proper hands," continued the old man. "He should have a pot of money waiting for him if Kelso did the right thing by him. His mother had money, too. All the Selby property came to her, through her grandfather. Her grandfather hated Kelso, thought him a mean dog. He was, too. Came to Madrid once when I was there. Egad, I was ashamed of him. The Queen used to ask me about the English noble who was always quarrelling with the cabmen about their fares. They made quite a story of it. I didn't dare show my face at Court for a month. I hope he treated his grandson better than he did the jarvies."