All of these died of disease either before or after the battle and are accounted for:

Edwards, William H. Age 28. Residence Henry County, nativity Illinois. Enlisted Dec. 20, 1861. Mustered Dec. 20, 1861. Died of fever May 27, 1862, Savannah, Tenn. Buried in Shiloh National Cemetery, Pittsburg Landing, Tenn. Section M, grave 269. (Company D)

Gillett, Chauncy F. Age 19. Residence Hawkeye, nativity Ohio. Enlisted Nov. 16, 1861. Mustered Nov. 16, 1861. Died of chronic diarrhoea May 7, 1862, Pittsburg Landing, Tenn.
Buried in Shiloh National Cemetery, Pittsburg Landing, Tenn. Section C, grave 8. (Company K)

Kyle, William H. Age 21. Residence Mount Pleasant, nativity Iowa. Enlisted Oct. 5, 1861. Mustered Nov. 5, 1861. Died March 4, 1862, Savannah Tenn. Buried in Shiloh National
Cemetery, Pittsburg Landing, Tenn. Section M, grave 271.
(Company I)

Weaver, William A. Age 21. Residence Western, nativity Ohio. Enlisted Oct. 2, 1861. Mustered Nov. 2, 1861. Died of fever March 22, 1862, Savannah, Tenn. Buried in Shiloh National Cemetery, Pittsburg Landing, Tenn. Section M, grave 274. (Company F)

Welch, James D. Age 19. Residence Burlington, nativity Iowa. Enlisted Oct. 6, 1861. Mustered Nov. 6, 1861. Died of fever March 28, 1862, Savannah, Tenn. Buried in Shiloh National Cemetery, Pittsburg Landing, Tenn. Section M, grave 272. (Company K)

Williford, James H. Age 21. Residence Mount Pleasant, nativity Iowa. Enlisted Oct. 1, 1861, as Drummer. Mustered Nov. 5, 1861. Died March 29, 1862, Savannah, Tenn. Buried in Shiloh National Cemetery, Pittsburg Landing, Tenn. Section M, grave 268. (Company I)

There is no Edward Cayner found in the 14th Iowa nor in the Soldier Sailor System

Tom do the grave numbers in the roster match with those you have today in the Shiloh records?