Searching for obituaries or burial locations of the following COUCH children...3 of them all died around the same time.

Elizabeth Couch: died August 22, 1861 (5 years old)
George Couch: died August 22, 1861 (11 months old)
Maryetta Couch: died August 26, 1861 (2 years old)
Minerva Couch: died October 20, 1854 (9 months old)

All were children of Lafayette COUCH and Mary Jane (McKinney) and lived in Battle Ground.

If anyone can help or know how I could research this information I would be very grateful !