The son of Randolph McCoy, Sr. and his wife, Sarah McCoy.

Calvin was shot to death in the legendary Hatfield/McCoy "New Years Day Massacre" when the Hatfield clan retailiated against the McCoys. The two families had an ongoing feud for a quarter of a century over petty issues that evolved into murderous rage for both sides.

On the first day of the new year, the Hatfields and their accomplices set out to finish off the McCoys in their home. Randolph escaped, but Calvin and his sister, Alifair were murdered and their mother, Sarah, was left barely alive with a crushed skull. All of Randolph McCoy's buildings: his home, outhouses, barn, storage sheds, were burned to the ground.

Calvin, Alifair, and other brothers, Randolph "Bud" McCoy, Jr., Pharmer, and Tolbert McCoy are all buried at the McCoy Family Cemetery located on a wooded hillside east of highway 319, 300 yards from the old McCoy home in Blackberry Fork of Pond Creek in Pike County, Kentucky. Tolbert, Pharmer and Bud were shot to death after being strung to paw paw bushes by the Hatfields. On election day in Pike County, the younger McCoys antagonized a Hatfield cousin. The patriarch of the Hatfield Clan, William Anderson "Devil Anse" Hatfield's younger brother Ellison wound up mortally stabbed and shot. Devil Anse and his sons, brothers and other family members intercepted the capture of the McCoy boys and executed them not long after Ellison's death.

The source for the cemetery and the burials there is the application of the site for the National Register of Historic Places where the site is documented as the Hatfield and McCoy Historic District. The application also notes that at the time of application (1976), three graves were marked with fieldstones, one with the name "Cal McCoy" crudely incised into it.

Site location: begin at a point approximately 1000 yards east of the intersection of Mudlick Branch and Hwy. 319, continue northwest 70 yards along access road, then south along ravine 20 yards to Hwy. 319, and west 70 yards along highway to starting point.