Orleans County sheriff's department officials say 61-year-old Frederick Miller has been accused of killing 53-year-old Rachel Miller at their town of Carlton home. He's charged with second-degree murder.
Investigators say that although the victim and suspect have the same last name, they weren't married or siblings.
Rachel Miller's body was found near a guardrail about 7 a.m. Monday, not far from where the Millers lived.
Investigators say the two had fought inside the home and then moved outside.
Authorities didn't release a cause of death and say an autopsy is planned.