Civil War Soldier

Thomas Clemens

Offaly: Birr • Army: Union • Born: 1844 • Died: 1921

Soldier No. 260

3 Regular Army

At a glance Town: 12 · Regiment: 12 · State: 12 · Town+Reg: 0

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17 September 2026

From Offaly to America: US Civil War Soldier, Thomas Clemens, Born In The Parish Of Roscomroe.

Thomas Clemens, born in 1842 in Ireland, emigrated to the USA in 1855. He served in the Civil War, initially with the 3rd U.S. Regular Artillery and later with the 11th Connecticut Volunteer Infantry.…

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Thomas Clemens in the wider Civil War story

Thomas Clemens is recorded from Birr with service in Union. The associated regiment record is 3 Regular Army Artillery. This profile is linked to Battle of White Oak Swamp.

TownBirr

ArmyUnion

Regiment3 Regular Army Artillery

Battle/EventBattle of White Oak Swamp

2 documented life events 2 linked battles 1 media and research links

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This record places Thomas Clemens from Birr in Union service.

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Soldier Number: 260
Surname: Clemens
First Name: Thomas
Alternative Name / Alias: Unknown / not yet recorded
Soldier No. Of Relation: Unknown / not yet recorded
Offaly Town / Area: Birr
Army: Union
Rank: Private
Company: Co. M
Regiment Number: 3
US State Regiment: Regular Army
Type Reg.: Artillery

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Civil War Death Y/N: N
Battle Or Other Civil War Related Death: Unknown / not yet recorded
Death Year: 1921
Place of Death: Pomfret, Connecticut
State / Country Of Burial: Connecticut, USA
Grave Site (link): Unknown / not yet recorded

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Service
Union – 3 Regular Army Artillery – Co. M
Death & Aftermath
Death year: 1921 • Civil War death: N • Place: Pomfret, Connecticut • Burial location: Connecticut, USA

➕ Linked Civil War Battles 2 linked

Civil War Battle

Battle of White Oak Swamp

Location: Virginia

Connection: Combat

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Civil War Battle

Battle of Antietam or Sharpsburg

Location: Maryland

Connection: Combat

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americasoffalyheroes.com

➕ Related Soldiers Tap to expand

Records that may help trace families, units, and shared experiences.

From the same Offaly town / area

Thomas Sharkey — Soldier No. 12 | Birr | N/A On Draft Register N/A | Union
Peter Guinan — Soldier No. 13 | Birr | 116 Pennsylvania Infantry | Union
Martin Hart — Soldier No. 14 | Birr | 51 Ohio Infantry | Union
John Holster — Soldier No. 15 | Birr | 1 North Carolina Cavalry | Confederate
Michael Howe — Soldier No. 16 | Birr | 11 Kansas Cavalry | Union
George Kennedy — Soldier No. 17 | Birr | 69 New York Infantry | Union
John Sharkey — Soldier No. 18 | Birr | 11 New York Infantry | Union
Daniel Kenney — Soldier No. 19 | Birr | 12 Regular Army Infantry | Union | d. 1863
John Logan — Soldier No. 20 | Birr | 1 Regular Army Infantry | Union
John Wilkinson — Soldier No. 21 | Birr | 24 Mississippi Cavalry | Confederate
James Mooney — Soldier No. 22 | Birr | 11 Indiana Infantry | Union | d. 1864
James Moore — Soldier No. 23 | Birr | 13 Pennsylvania Cavalry | Union

Same surname (possible family group)

Richard Clemens — Soldier No. 259 | Birr | 4 New York Infantry | Union | d. 1913

Served in the same regiment

Joseph McElroy — Soldier No. 163 | Tullamore | 3 Regular Army Artillery | Union
Timothy Hogan — Soldier No. 184 | Shinrone | 3 Regular Army Cavalry | Union
Michael Gaynor — Soldier No. 214 | Birr | 3 Regular Army Infantry | Union
James Barry — Soldier No. 217 | Birr | 3 Regular Army Artillery | Union
William Belton — Soldier No. 219 | Birr | 3 Regular Army Artillery | Union
John Brogan — Soldier No. 225 | Birr | 3 Regular Army Infantry | Union
Patrick Connolly — Soldier No. 268 | Birr | 3 Regular Army Artillery | Union
Thomas Dalton — Soldier No. 290 | Birr | 3 Regular Army Infantry | Union | d. 1862
James Dempsey — Soldier No. 312 | Birr | 3 Regular Army Artillery | Union | d. 1889
John Delaney — Soldier No. 314 | Birr | 3 Regular Army Artillery | Union | d. 1891
Edward Gates — Soldier No. 369 | Birr | 3 Regular Army Infantry | Union | d. 1879
John McDermott — Soldier No. 386 | Ferbane | 3 Regular Army Infantry | Union

Served in regiments from the same US state

Daniel Kenney — Soldier No. 19 | Birr | 12 Regular Army Infantry | Union | d. 1863
John Logan — Soldier No. 20 | Birr | 1 Regular Army Infantry | Union
Patrick Clark — Soldier No. 39 | Birr | 4 Regular Army Artillery | Union
John Costello — Soldier No. 42 | Birr | 5 Regular Army Infantry | Union | d. 1863
Hugh Conklin — Soldier No. 101 | Ferbane | 19 Regular Army Infantry | Union | d. 1923
John Glynn — Soldier No. 129 | Lusmagh | #N/A Regular Army N/A | Union
James Gargon — Soldier No. 146 | Tullamore | 1 Regular Army Infantry | Union
Michael Moran — Soldier No. 155 | Tullamore | 4 Regular Army Infantry | Union
Edward Noonan — Soldier No. 156 | Tullamore | 16 Regular Army Cavalry | Union
Joseph McElroy — Soldier No. 163 | Tullamore | 3 Regular Army Artillery | Union
Edward Duggan — Soldier No. 168 | Tullamore | 5 Regular Army Infantry | Union | d. 1891
James Hickey — Soldier No. 183 | Kilcormac | 1 Regular Army Engineers | Union

Served in the same army

James Fahy — Soldier No. 1 | Banagher | 2 New York Cavalry | Union | d. 1898
Michael Kenny — Soldier No. 2 | Banagher | 10 New York Infantry | Union | d. 1904
Edward Hopper — Soldier No. 3 | Banagher | 5 New Jersey Infantry | Union | d. 1870
James Flynn — Soldier No. 4 | Banagher | 1 New York Cavalry | Union | d. 1864
Thomas Flynn — Soldier No. 5 | Banagher | 62 New York Infantry | Union | d. 1873
Thomas McKenny — Soldier No. 6 | Banagher | 44 Ohio Infantry | Union | d. 1929
Keeran McKenny — Soldier No. 7 | Banagher | 110 Ohio Infantry | Union | d. 1927
William Galvin — Soldier No. 8 | Banagher | 104 New York Infantry | Union | d. 1862
William Larkin — Soldier No. 9 | Banagher | 49 Wisconsin Infantry | Union | d. 1888
Marcus Beresford Monck — Soldier No. 10 | Banagher | 11 New York Infantry | Union | d. 1862
Dennis Bracken — Soldier No. 11 | Banagher | 56 Massachusetts Infantry | Union | d. 1864
Thomas Sharkey — Soldier No. 12 | Birr | N/A On Draft Register N/A | Union

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This soldier’s regiment state: Regular Army

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americasoffalyheroes.com

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Authors

Kevin Guing

Danny Leavy

Available Details

Name	Thomas Clemens
Alt’ Name	Thomas Clemence, Thomas Clements
Location/ Birthplace	Roscumroe Parish Near Birr Roscomroe – Google Maps
Born	1841
Baptism Record
Year of Death	1921
Grave Location	Thomas Clemens (1841-1921) – Find a Grave Memorial
US State	Maine & Connecticut
US Residence	Pomfret Pomfret, Connecticut – Wikipedia Ancestry.com – 1900 United States Federal Census
Mother	To Be Confirmed Mary Clemens (unknown-1881) – Find a Grave Memorial
Father	To Be Confirmed Daniel Clemens (1807-1889) – Find a Grave Memorial
Other Family	Wife: Elizabeth Elizabeth Ann Gillis Clemens (1849-1907) – Find a Grave Memorial
Army	Union Army Union army – Wikipedia
Military History	On regular army enlistment registers in October 1862 at Pleasant Valley NY, Re-enlisted in 1864 at Washington. re-enlists in 1867 at Port Preble, Maine. Confirms Birth Place as “Kings County, Ireland”. Pension records state that he first served in Co. I, 11th Connecticut Infantry from December 1861 to October 1862, and was finally discharged from service in for last time in 1870.
Army Details	Co. M, 3rd Artillery Regular Army Soldier Details – The Civil War (U.S. National Park Service) Battle Unit Details – The Civil War (U.S. National Park Service)
Other Details	United States Army Enlistments 1798-1914 Image \| findmypast.ie United States Army Enlistments 1798-1914 Image \| findmypast.ie