Civil War Soldier
DENNIS Dunleavy
Offaly: Birr
•
Army: Union
Soldier No. 208
143 New York
At a glance
Town: 12 · Regiment: 0 · State: 12 · Town+Reg: 0
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This record places DENNIS Dunleavy from Birr in Union service.
➕ Identity & Service Tap to expand
- Soldier Number
- 208
- Surname
- Dunleavy
- First Name
- DENNIS
- 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. D
- Regiment Number
- 143
- US State Regiment
- New York
- Type Reg.
- Infantry
➕ Family & Life Tap to expand
- Mother
- Unknown / not yet recorded
- Father
- Unknown / not yet recorded
- Siblings
- Unknown / not yet recorded
- Family Connections / Other Relationship
- Unknown / not yet recorded
- Birth Year
- Unknown / not yet recorded
- Baptism Record
- Unknown / not yet recorded
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- Civil War Death Y/N
- Unknown / not yet recorded
- Battle Or Other Civil War Related Death
- Unknown / not yet recorded
- Death Year
- Unknown / not yet recorded
- Place of Death
- Unknown / not yet recorded
- State / Country Of Burial
- Unknown / not yet recorded
- Grave Site (link)
- Unknown / not yet recorded
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➕ Life & Service Timeline Tap to expand
- Service: Union – 143 New York Infantry – Co. D
➕ Sources & References Tap to expand
➕ Related Soldiers Tap to expand
Records that may help trace families, units, and shared experiences.
From the same Offaly town / area
- JOHN P Birmingham — Soldier No. 221 | Birr | N/A On Draft Register N/A | Union | d. 1914
- MICHAEL Briscoe — Soldier No. 38 | Birr | 132 New York Infantry | Union | d. 1864
- THOMAS Cassidy — Soldier No. 37 | Birr | 80 New York Infantry | Union | d. 1889
- PATRICK Clark — Soldier No. 39 | Birr | 4 Regular Army Artillery | Union
- EDWARD Clarkson — Soldier No. 304 | Birr | 5 Regular Army Infantry | Union | d. 1862
- JOHN Cleary — Soldier No. 36 | Birr | 96 Pennsylvania Infantry | Union | d. 1862
- MICHAEL Cleary — Soldier No. 35 | Birr | 7 Pennsylvania Cavalry | Union | d. 1893
- MICHAEL Clerihan — Soldier No. 261 | Birr | 10 Illinois Infantry | Union | d. 1908
- JAMES Clerihan — Soldier No. 262 | Birr | 6 Illinois Cavalry | Union | d. 1913
- JOHN Connor — Soldier No. 27 | Birr | 33 New York Infantry | Union | d. 1861
- JAMES Conway — Soldier No. 31 | Birr | 90 Illinois Infantry | Union | d. 1863
- DANIEL Corcoran — Soldier No. 29 | Birr | 90 Illinois Infantry | Union | d. 1870
Same surname (possible family group)
- JAMES Dunleavy — Soldier No. 324 | Unknown Within Offaly | 10 Indiana Infantry | Union
Served in regiments from the same US state
- JOHN W Baker — Soldier No. 90 | Edenderry | 15 New York Engineers | Union | d. 1920
- COL Michael Bennett — Soldier No. 92 | Edenderry | 28 New York Infantry | Union | d. 1909
- JOHN J Bermingham — Soldier No. 126 | Lusmagh | 6 New York Artillery | Union | d. 1939
- ANDREW Bermingham — Soldier No. 133 | Rahan | 69 New York Infantry | Union | d. 1862
- RICHARD Bermingham — Soldier No. 132 | Rahan | 69 New York Infantry | Union | d. 1919
- PETER Boland — Soldier No. 151 | Tullamore | 5 New York Artillery | Union | d. 1864
- SAMUEL Brackett — Soldier No. 55 | Daingean | 110 New York Infantry | Union | d. 1908
- PETER Breslin — Soldier No. 199 | Moneygall | 67 New York Infantry | Union | d. 1861
- MICHAEL Briscoe — Soldier No. 38 | Birr | 132 New York Infantry | Union | d. 1864
- WILLIAM Brown — Soldier No. 228 | Unknown Within Offaly | 110 New York Infantry | Union
- LAWRENCE Buckley — Soldier No. 466 | Kilcormac | 115 New York Infantry | Union | d. 1915
- CAPT James Campbell — Soldier No. 95 | Edenderry | 28 New York Infantry | Union | d. 1922
Served in the same army
- NICHOLAS Allen — Soldier No. 138 | Rhode | 10 Maine Infantry | Union
- ISAAC Ardill — Soldier No. 139 | Seir Kieran | 2 New Jersey Infantry | Union | d. 1862
- CHRISTOPHER Armstrong — Soldier No. 207 | Unknown Within Offaly | Regular Army Ordnance | Union
- JOHN W Baker — Soldier No. 90 | Edenderry | 15 New York Engineers | Union | d. 1920
- JOHN Barrett — Soldier No. 157 | Tullamore | 6 Indiana Infantry | Union | d. 1888
- JAMES Barrett — Soldier No. 154 | Tullamore | 35 Indiana Infantry | Union | d. 1894
- JAMES Barry — Soldier No. 217 | Unknown Within Offaly | 3 Regular Army Artillery | Union
- WILLIAM Cowell Bayley — Soldier No. 153 | Tullamore | 25 Pennsylvania Infantry | Union | d. 1889
- MICHAEL Beggs — Soldier No. 218 | Unknown Within Offaly | 8 New Hampshire Infantry | Union | d. 1896
- WILLIAM Belton — Soldier No. 219 | Unknown Within Offaly | 3 Regular Army Artillery | Union
- COL Michael Bennett — Soldier No. 92 | Edenderry | 28 New York Infantry | Union | d. 1909
- THOMAS Bergin — Soldier No. 220 | Unknown Within Offaly | 2 Regular Army Artillery | Union
➕ Regiment State Map Tap to expand
Cluster map of US State Regiment from the master register (one marker per state).
This soldier’s regiment state: New York
➕ Research & Further Reading Tap to expand
- From US Civil War Soldier To Methodist Minister. Reverend William Wallis, Born In Birr, Offaly 1836. (2026-03-20)
- Union Soldiers John & Nicholas Connor. Brothers Who Died During the US Civil War. Their Family Originated In Birr, County Offaly. (2025-12-12)
- John Renehan – Born In County Offaly, Ireland. Part Of The Union Garrison At Fort Sumter On Friday 12th April 1861. (2025-11-07)
- Thanks To Everyone Who Has Made Contact With Us, Helping To Add Vital Information To The Stories of Forgottten Offaly Soldiers – US Civil War 1861-1865. (2025-09-12)
- Edward Doyle, An Offaly Man Who Served In The US Army From 1850 To 1890. (2025-06-10)
- Offaly’s Darkest Day Of The US Civil War? 2nd July 1863 At The Battle Of Gettysburg (2025-05-09)

Available Details
| Name | Dennis Dunleavy |
| Alt’ Name | Denis Dunlavy |
| Location/ Birthplace | Birr Birr, County Offaly – Wikipedia |
| Born | 1812 |
| Baptism Record | |
| Year of Death | 1877 |
| Grave Location | Denis Dunlavy (1801-1877) – Find a Grave Memorial |
| US State | New York |
| US Residence | Ithaca, New York Ithaca, New York – Wikipedia |
| Mother | Hannah Feeney |
| Father | William Dunleavy |
| Other Family | 1st Wife: Ann Johnston Ann Johnston Dunlavy (1810-1896) – Find a Grave Memorial |
| Army | Union Army Union army – Wikipedia |
| Military History | Originally in British Army |
| Army Details | Co. D, 143rd New York Infantry 143rd_Infantry_CW_Roster.pdf |
| Other Details | Possibly Originally in British Army. Page 1 – UK, Royal Hospital Chelsea Pensioner Service Records, 1760-1925 – Fold3 |

https://museum.dmna.ny.gov/application/files/1515/5310/3029/143rd_Infantry_CW_Roster.pdf 
https://www.findmypast.ie/search/results?datasetname=united+states+civil+war+pension+files+index+1861-1934&sid=998&firstname=dennis&firstname_variants=true&lastname=dunleavy 
https://www.ancestry.com/search/collections/1964/records/126745?o_xid=115786&o_lid=115786&o_sch=Fold3&_gl=1*112kdr5*_ga*MjExNjg1NTI4OC4xNzQwNzMyMzk0*_ga_4QT8FMEX30*czE3NzMzOTQ0NTEkbzQyOSRnMSR0MTc3MzM5Nzc0NyRqNDAkbDAkaDA. 
https://images.findagrave.com/photos/2009/156/37998287_124431850835.jpg 
https://www.ancestry.com/search/collections/61068/records/50211
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