James Edwards applied for a pension on March 15, 1878 (application #250337/certificate #173223)
He died Dec. 10, 1880 and buried in Greenwood Cemetery in JoDavies County, Ill. according to Sons of Union Veterans
Graves Registration website.

I did not find Edwards or Egleston in US Census.

I did not find Robert Taylor or George Mair in SUV Graves Registration site.