Jonathan Limary, 22, was arrested over the weekend after he was indicted by a grand jury.
Authorities said he had gotten into a fight with Jean Bragdon, 44, in October. Bragdon died the following month from post-surgical complications.
Police had been investigating ever since and the Attorney General's Office presented its case to a grand jury last week.
Along with manslaughter, Limary is also charged with aggravated assault.