Co F 16th Illinois Infantry.
Recruit, mustered Feb 19, 1864. Residence OQUAWKA, HENDERSON CO, IL Age 32. Joined FEB 8, 1864 OQUAWKA, IL Joined By CPT HERBERT Period 3 YRS Muster In FEB 19, 1864 QUINCY, IL.
KILLED IN BATTLE JUL 17, 1864 AT CHATTAHOOCHIE RIVER GA.
-Illinois Civil War database

Originally buried 1 mile S of Paces Ferry on the Chattahoochee River on road leading by Clark Howell's mill.

He married Margaret Gossage, 9 Feb 1854, in Schuyler County, Illinois. His widow, Margaret Montgomery, received a Widow's Pension until 4 Sep 1866 when she remarried to James W Tyner . Four children received Minor's Pensions. Martin, born 10 Jan 1855. Charles Henry, born 4 April 1858. Emma (Joseph Miller), born 9 Aug 1861. Ida (Francis Bouton), born 15 Nov 1863. The family was in the 1880 census of Columbus City, Louisa, Iowa. James W. and Margaret Tyner were in the 1900 census of Mercer, Mercer, Illinois.

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Memorial Cenotaph at Oquawka, IL
Soldiers' Monument of Henderson County
Oquawka, Henderson County, Illinois, USA
MEMORIAL ID 200848382
Contributor: dhutson (48788569)∼On 7/4/19 with the help of Find A Grave I created a cenotaph memorial cemetery for The Soldiers' Monument of Henderson County. It is located in Oquawka, Henderson Cty, IL. Unfortunately on 8/23/19 because of an unnamed find a grave member who didn't think it should exist, this memorial has been deleted and all 200 of my memorials are now listed as unknown burials. Per FAG rules it didn't meet the criteria for being a cenotaph. So I have now created a virtual cemetery for the soldiers and on each memorial I have tried to located the actual burial and family members of the soldier.

Source: History of Mercer And Henderson Counties pgs 1410-1414.
W.W. Webster of Muscatine Iowa was selected to construct the monument that was finished in October of 1874. On the monument is inscribed , on it's four sides, 200 names of soldiers in Henderson County who fell in the field or died in the service of their country. The monument was erected by the private liberality of the people; subscriptions varied from $5 to $50. The cost was $3,300. The location is in the center of a beautiful enclosed park, planted to deciduous and evergreen trees, comprised in lots 1, 4, and 5, block 4 Swartz' addition, donated by John McKinney Sr., for many years a resident and business man of Oquawka. this handsome work is not more a monument to the glorious dead of Henderson County than to the affection, gratitude, generosity and patriotism of the happy and intelligent living.
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This Soldiers Memorial is a cenotaph for Henderson County soldiers who died in the Civil War.
His actual burial is in Georgia.

See below for his actual grave site in Georgia
David Montgomery

Thanks to my sister BKage #48921676 for the photographs of the monument.

Illinois, Databases of Illinois Veterans Index, 1775-1995

Name: David Montgomery
Rank: Private
Company: F
Unit: 16th Illinois Infantry
Birth Date: Abt 1832
War: Civil War
War Years: 1861-1865
Service Entry Age: 32
Service Entry Date: 8 Feb 1864
Service Entry Place: Oquawka, IL
Joined By Whom: CPT HERBERT
Period: 3 YRS
Muster In Date: 19 Feb 1864
Muster In Place: Quincy, IL
Remarks: KILLED IN BATTLE JUL 17, 1864 AT CHATTAHOOCHIE RIVER GA
Residence Place: Oquawka, Henderson CO, IL
Record Source: Illinois Civil War Muster and Descriptive Rolls
URL: http://www.ilsos.gov/isavetera