He may be the Joseph Kohler who died at Boston City Hospital on 9 June 1893 at age 44 years, 8 months and 12 days of accidental burns. He was a brewer, born in Germany. Father was Ignatius and mother was Barbara Anderer. The dates match a naturalization record which has a birth date of 25 September 1848 in Germany and naturalization on 19 October 1882.