Too few years later, John had joined the Union Army and was on his way to the front when he contracted measles and died at Bolivar, Tennessee.

John's body was the first to be placed in Majorville Cemetery, even before the original church was dedicated.  His funeral services were held in the home of Major John Williams, just north and east of the cemetery.

From the Muster and Descriptive Rolls compiled by the Illinois Adjutant General's Office:

Name   PARKER, JOHN N
Rank   PVT   Company G  Unit  2 IL US CAV

Personal Characteristics
Residence   FOUNTAIN GREEN, HANCOCK CO, IL
Age 18   Height 5' 9 1/2"   Hair BROWN   Eyes GRAY   Complexion FAIR
Marital Status   SINGLE   Occupation   FARMER   Nativity   PARK CO, TN

Service Record
Joined When   JUL 20, 1861   Joined Where   WARSAW, IL
Joined By Whom   CPT MARSH   Period   3 YRS
Muster In   AUG 12, 1861   Muster In Where   CAMP BUTLER, IL
Muster In By Whom   N/A   Muster Out   N/A
Muster Out Where   N/A   Muster Out By Whom   N/A
Remarks   DIED SEP 12, 1862 AT BOLIVAR TENN

Unfortunately, there was/is no Park County, Tennessee.

There is at least one tombstone at Majorville which records a death earlier than 1862.
Laura Eaton White died in 1860.  We believe she was buried elsewhere and that her remains and/or her marker were moved to Majorville at a later date.