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James Brennan — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Hampden-County, Massachusetts
Our Model Tree links this James Brennan across the 1930 and 1940 US Censuses in Hampden-County, Massachusetts (XGBoost, ~Confirmed) — first a son (b.~1914), then head of a 10-person household.
Age 26
b. ~1914
Male
Son
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Hampden-County, Massachusetts |
| Surname | Brennan |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Springfield city |
| 1935 Residence (County) | Hampden |
| Additional Details | |
| Occupation | Core-Room Helper |
| Industry | Valve Shop |
| Class of Worker | PW |
| Hours Worked | 32 |
| Income (1939) | 990 |
| Highest Grade | Hs 2 |
| 1935 Residence | Same House |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Core-Room Helper |
| Township / Ward | Springfield City |
| Est. Birth Year | ~1914 |
Household Members
Census records only state relationship to the household head.
Pairwise kinship is derived (~90–95% accurate), not recorded.
Step/blended families and boarders can break it.
10 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| Marguerite Brennan | Daughter | — | 22 | ~1918 |
| Sheila Brennan | Daughter | — | 8 | ~1932 |
| Patricia Brennan | Daughter | — | 17 | ~1923 |
| Mary Brennan | Daughter | — | 31 | ~1909 |
| Brenda Brennan | Daughter | — | 13 | ~1927 |
| Eileen Brennan | Daughter | — | 24 | ~1916 |
| James Brennan | Head | — | 54 | ~1886 |
| James Brennan | Son | — | 26 | ~1914 |
| Joseph Brennan | Son | — | 16 | ~1924 |
| Margaret Brennan | Spouse | — | 50 | ~1890 |
Census Appearances
1930
Hampden, Massachusetts
Son, age 15
Hampden, Massachusetts · implied b. ~1915 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Brennan |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | Irish Free State |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Hampden-County, Massachusetts
Son, age 26
Hampden-County, Massachusetts · implied b. ~1914 — 10 household members
| Surname | Brennan |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Springfield city |
| 1935 Residence (County) | Hampden |
| Occupation | Core-Room Helper |
| Industry | Valve Shop |
| Class of Worker | PW |
| Hours Worked | 32 |
| Income (1939) | 990 |
| Highest Grade | Hs 2 |
| 1935 Residence | Same House |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
Model Tree
An inferred pedigree reconstructed from census links — up to 4 generations within the 1900–1950 window. Closer generations are built from household co-residence; deeper ones are bridged by following a relative to their own childhood census. Confidence compounds and weakens with each generation.
Our Model Tree links James Brennan across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
James Brennan
Son · 1940 · age 26 · b. ~1914 · Massachusetts
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Sibling
Sheila Brennan
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Marguerite Brennan
Sibling · 1940 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Patricia Brennan
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Brenda Brennan
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Brennan
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Brennan
Sibling · 1940 · age 31
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Eileen Brennan
Sibling · 1940 · age 24
Source co-child of head (derived)
● Co-child · derived · ~0.88
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Hampden-County, Massachusetts
Open full size
1940 US Federal Census — Hampden-County, Massachusetts
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01711-00671)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Mary A. Lovejoy | 67 | Head | — | Pennsylvania |
| 2 | Harold J. Whitman | 27 | Lodger | Chemist | Michigan |
| 3 | Robert M. Aude | 25 | Lodger | Chemist | Wisconsin |
| 4 | Charles D. Small | 24 | Lodger | Mechanical Engineer | Massachusetts |
| 5 | Robert E. Randall | 25 | Lodger | Chemist | New York |
| 6 | Emelie Morriccette | 51 | Head | Barber | Massachusetts |
| 7 | Agnes Morriccette | 49 | Wife | — | Canada |
| 8 | Everett Morriccette | 26 | Son | Transport Mechanic | Massachusetts |
| 9 | Ella Morriccette | 29 | Daughter-in-law | Packer | Massachusetts |
| 10 | Armand Beagle | 47 | Head | Postmaster | Massachusetts |
| 11 | Alice Beagle | 40 | Wife | — | Massachusetts |
| 12 | Armand Jr. Beagle | 17 | Son | — | Massachusetts |
| 13 | Adele T. Beagle | 12 | Daughter | — | Massachusetts |
| 14 | John M. Cochran | 44 | Head | Mechanic | New Jersey |
| 15 | Esther R. Cochran | 44 | Wife | — | Connecticut |
| 16 | Robert N. Cochran | 12 | Son | — | Massachusetts |
| 17 | James Brennan | 54 | Head | Moulder | England |
| 18 | Mary L. Brennan | 31 | Daughter | Stenographer | England |
| 19 | James Brennan THIS PERSON | 26 | Son | Core-Room Helper | Massachusetts |
| 20 | Eileen Brennan | 24 | Daughter | Stenographer | Massachusetts |
| 21 | Marguerite Brennan | 22 | Daughter | — | Massachusetts |
| 22 | Patricia R. Brennan | 17 | Daughter | — | Massachusetts |
| 23 | Margaret Brennan | 50 | Wife | — | England |
| 24 | Joseph M. Brennan | 16 | Son | — | Massachusetts |
| 25 | Brenda J. Brennan | 13 | Daughter | — | Massachusetts |
| 26 | Sheila Brennan | 8 | Daughter | — | Massachusetts |
| 27 | Chester Marano | 50 | Head | Moulder | Italy |
| 28 | Caroline V. Marano | 34 | Wife | Laundry Worker | Massachusetts |
| 29 | Robert E. Marano | 20 | Son | Box-Maker | Massachusetts |
| 30 | Chester W. Marano | 18 | Son | Paper Boy | Massachusetts |
| 31 | Caroline E. Marano | 16 | Daughter | — | Massachusetts |
| 32 | Mildred M. Marano | 11 | Daughter | — | Massachusetts |
| 33 | Jerry J. Brown | 49 | Head | Asst-Postmaster | Massachusetts |
| 34 | Marguerite Brown | 47 | Wife | — | Pennsylvania |
| 35 | Joseph E. Brown | 23 | Son | Machinist | Massachusetts |
| 36 | M. Angela Brown | 20 | Daughter | Sales-Lady | Massachusetts |
| 37 | Gerald J. Brown | 17 | Son | — | Massachusetts |
| 38 | Garry J. Brown | 8 | Son | — | Massachusetts |
| 39 | Malvina J. Connell | 51 | Mother-in-law | — | Massachusetts |
| 40 | Norman W. Lake | 22 | Boarder | Machinist | Vermont |
Related Census Records
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1940 United States Federal Census (NARA). Our Model Tree links this person across census decades using XGBoost-based record linkage, with per-link confidence scores. Household corroboration strengthens the signal when co-residents appear on the same census pages in multiple years.
Source: National Archives and Records Administration (NARA)