Deeply shaken by his experience after the famous battle and showing symptoms of
post-traumatic stress, Weir's mental health declined rapidly. Weir wrote letters to Custer's widow,
Elizabeth Bacon Custer, hinting at untold matters regarding her husband's death. Formally posted back to New York City on recruiting duty, in the final months of his life he refused to go outside, began to drink heavily and in his last days was said to be extremely nervous, to the point of being unable to swallow. He died at his home in New York City on December 9, 1876, at age 38, less than six months after Custer's death, reportedly in a state of extreme
depression. In the 1880s, his remains were reinterred at
Cypress Hills National Cemetery in Brooklyn, New York. ==Media portrayal==