The 3rd
U. S. Cavalry was organized in 1845 as the Regiment of Mounted Riflemen. They fought in the Mexican American War and
were later renamed the 3rd Cavalry in 1861.
Following the Civil War, the 3rd Cavalry was tasked with securing the expanding American West during the escalating Indian Wars. At the time of John’s service in 1869 and 1870 the regiment was transferred from the District of New Mexico to the rugged Arizona Territory.
Company F
operated on the southwestern frontier during a time when conflicts with Apache
and Yavapai bands were escalating. The
company was tasked with protecting trails, guarding remote outposts, such as Camp Hualpai and Fort Whipple, and
conducting scouting expeditions across vast, arid terrains.
Cavalry service in Arizona during
this era was notoriously brutal. Troops
endured intense desert heat, freezing mountain nights, isolation, poor rations
and relentless tracking duties, factors which could easily trigger long-term
physical disability and cardiovascular strain.
On March 28, 1871 John received an official medical discharge. While “in the field” near notoriously
unhealthy Camp Grant, Arizona a military surgeon signed a certificate declaring
John permanently disabled due to severe cardiovascular issues, specifically “progressive
dilation” (an enlarged heart) and chronic bronchitis.
These men
faced immense physical wear and tear. “Progressive
dilation” typically referred to an enlarged heart caused by chronic
overexertion or an untreated illness, like the bronchitis noted in his
file. This diagnosis confirms that his physical
breakdown was directly tied to the hardships of his enlistment. His first stint in the Arizona Territory was
an intense 16 months before his health collapsed near Camp Grant.
Although John
was discharged from the Army, he was far too ill to survive the journey
home. He spent the spring of 1871
confined to the post hospital at Camp Pinal Arizona. In September he was transferred to Camp
Lowell, a larger military hospital near Tucson.
By October he was stable enough for light duties around the hospital as
a convalescent patient. In late November
he was finally released to begin his long journey back to the northeast to
recuperate with family.
At the time
of admission, the name and address of John’s nearest relative is listed as
“1st Cousin Hannah O’Sullivan, 180 Chelsea St, Charlestown Mass”
But which
Hannah? Hannah O’Sullivan was the widow
of Jeremiah O’Sullivan, but her mother was also Mary (Sullivan) Dealy, so she
could be his first cousin through her mother. Her daughter
Hannah O’Sullivan was the daughter of Jeremiah and Hannah (Dealy)O’Sullivan, so
she could also be his first cousin through her father.
Hannah Senior was born in 1832, John Downey in 1844 and Hannah Junior in
1861.
By the time John died on October 30, 1920 and made his final trip home, Hannah Senior had died. Although John does have a Maine death certificate, because his body was shipped interstate a death certificate was also issued in Massachusetts. The informant was Hannah O’Sullivan. We know this is the younger Hannah, as she was the only one still living. She listed John’s parents on the death certificate as John Downey and Catherine Sullivan. But was Catherine the sister of Mary (Sullivan) Dealy or Jeremiah Sullivan? Either Hannah could be his first cousin.
In accordance with his family’s wishes, John’s body is officially “sent to Charlestown,” Massachusetts. John was buried on November 3 at Holy Cross Cemetery in Malden after a funeral Mass at St Catherine’s Church in Charlestown.
My grandfather, Jeremiah Sullivan, would have lived in the same house in Charlestown with John until he was about 5 years old. He would have known John at least until his father died and they became estranged from his grandmother Hannah. Did he hear stories about the American Southwest? Did he think of John when he was sent to Texas with the New Hampshire National Guard in 1916?
Resources:
Register of the National Home for Disabled Volunteer Soldiers at Togus, Maine
1870 United
States Federal Census; Year: 1870; Census Place: Camp Grant, Pima, Arizona
Territory; Roll: M593_46; Page: 30B
1900 United
States Federal Census Year: 1900; Census Place: Boston Ward 3, Suffolk,
Massachusetts; Page: 5; Enumeration District: 1195; FHL microfilm: 1240676
1910 United
States Federal Census Year: 1910; Census Place: Boston Ward 3, Suffolk,
Massachusetts; Roll: T624_614; Page: 1B; Enumeration District: 1297; FHL
microfilm: 1374627
1920 United
States Federal Census Year: 1920; Census Place: Augusta, Kennebec, Maine; Roll:
T625_643; Page: 11A; Enumeration District: 48
Arizona, U.
S., Territorial Census Records, 1864-1882
Baptism, irishgenealogy.ie
Boston,
Massachusetts, U.S., List of Boston Residents, 1909-1972
Boston Evening Globe, Nov. 2, 1920, page 7
Charlestown Enterprise, Nov. 6, 1920
Massachusetts Death Certificate
Maine, Death
Records, 1761-1922: Maine State Archives; Cultural Building, 84 State House
Station, Augusta, ME 04333-0084; 1908-1922 Vital Records; Roll Number: 16
Massachusetts,
U.S. City Directories
U.S.
National Homes for Disabled Volunteer Soldiers, 1866-1938
U.S., Army,
Register of Enlistments, 1798-1914
U.S.,
Returns from Military Posts, 1806-1916: National Archives and Records
Administration (NARA); Washington, D.C.; Returns from U.S. Military Posts,
1800-1916; Microfilm Serial: M617; Microfilm Roll: 653
Index to
Indian Wars Pension Files, 1892-1926: Page 1 - Index to Indian Wars Pension
Files, 1892-1926 1873; Page 1 - Index to Indian Wars Pension Files, 1892-1926
1949
Copyright Kathleen Sullivan 2026








