Jeffrey Mason Maynard, DOB: 11-10-91, appeared today in the Gilpin County District Court where he was sentenced to 44 years in prison for the murder of 63-year-old John Cumby. Mr. Cumby’s body was found in a remote campground in Gilpin County in September, 2017.
On September 11, 2017 Mr. Maynard was arrested following a traffic stop in Ada County Idaho. He was driving a van which was registered to Mr. Cumby. Ada County Sheriff’s deputies found several items belonging to Mr. Cumby in the van, including his wallet with credit cards, his Social Security card, and his passport. They also found camping equipment and clothing belonging to Mr. Cumby.
Mr. Cumby lived in Illinois but was spending some time in the Rocky Mountains. Investigators spoke with Mr. Cumby’s family in Illinois and learned that he had not been heard from since August 20 and was overdue in returning to Illinois.
The investigation in Idaho led the Ada County Sheriff’s deputies to contact the Gilpin County Sheriff’s Office on September 11, 2017. The Gilpin County Sheriff’s Office began their investigation with the assistance of the Colorado Bureau of Investigation (CBI), the Jefferson County Sheriff’s Office, and the District Attorney’s Office. GPS technology on a cell phone guided investigators to the area where Mr. Cumby’s body was found.
On September 13, 2017 the Gilpin County Sheriff’s Office, working with the Jefferson County Sheriff’s Department K-9 Unit and the Front Range Rescue Dogs Association, located the remains of Mr. Cumby in a camping area in Rollinsville, in Gilpin County.
Mr. Maynard was extradited from Idaho to Gilpin County on December 28, 2017. He pled guilty on September 21, 2018 to Second Degree Murder (F2); two counts of Identity Theft (F4); and one count of Aggravated Motor Vehicle Theft (F4).
Maynard had an active warrant for attempted arson out of Texas when he was arrested.