Timothy Ray Brown, the first person to be cured of H.I.V., through an experimental bone marrow transplant that offered hope though not a realistic treatment for most people with the virus, died on Tuesday at his home in Palm Springs, Calif. He was 54. His partner, Tim Hoeffgen, said the cause was unrelated recurring leukemia. Mr. Brown had remained free of H.I.V., the virus that can lead to AIDS. “Timothy would like to be remembered as a man who gave hope to people around the world that a cure for H.I.V. is possible,” Mr. Hoeffgen said in an email. Mr....