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Joseph Brennan — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this Joseph Brennan across the 1920, 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed) — first a head (b.~1874), then head of a 4-person household.
Age 66
b. ~1874
Male
Head
Born: England
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | Brennan |
| Given Name | Joseph M |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 66 |
| Marital Status | Married |
| Birthplace | England |
| 1935 Residence (City) | Malden (city) |
| 1935 Residence (County) | Middlesex |
| Naturalization Status | Naturalized |
| Additional Details | |
| Highest Grade | No 5 |
| 1935 Residence | Same House |
| Birth Country | England |
| Birthplace (normalized) | england |
| Township / Ward | Malden City |
| Est. Birth Year | ~1874 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Joseph | Age | Birth yr |
|---|---|---|---|---|
| Joseph Brennan | Head | — | 66 | ~1874 |
| Margaret Brennan | Spouse | — | 60 | ~1880 |
| Arthur Brennan | Son | — | 31 | ~1909 |
| Margaret Brennan | Daughter | — | 18 | ~1922 |
Census Appearances
1920
Middlesex, Massachusetts
Head, age 45
Middlesex, Massachusetts · implied b. ~1875 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Brennan |
| Given Name | Joseph |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 45 |
| Marital Status | Married |
| Birthplace | England |
| Year of Immigration | 1903 |
| Naturalization Status | Naturalized |
| Father's Birthplace | England |
| Mother's Birthplace | England |
| Occupation | Blacksmith |
| Industry | Blacksmith Shop |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Home Owned/Rented | O |
| Home Free/Mortgaged | M |
| Birth Country | England |
| Year of Naturalization | 1907 |
| Birthplace (normalized) | england |
1930
Middlesex, Massachusetts
Head, age 57
Middlesex, Massachusetts · implied b. ~1873 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Brennan |
| Given Name | Joseph |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 57 |
| Marital Status | Married |
| Birthplace | England |
| Naturalization Status | Naturalized |
| Year of Immigration | 1905 |
| Age at First Marriage | 25 |
| Father's Birthplace | England |
| Mother's Birthplace | England |
| Occupation | Horseshoer |
| Industry | Blacksmith |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Home Owned/Rented | O |
| Home Value / Rent | 6000 |
| Radio Set | R |
| Veteran | No |
| Birth Country | England |
| Birthplace (normalized) | england |
1940
Middlesex-County, Massachusetts
Head, age 66
Middlesex-County, Massachusetts · implied b. ~1874 — 4 household members
| Surname | Brennan |
| Given Name | Joseph M |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 66 |
| Marital Status | Married |
| Birthplace | England |
| 1935 Residence (City) | Malden (city) |
| 1935 Residence (County) | Middlesex |
| Naturalization Status | Naturalized |
| Highest Grade | No 5 |
| 1935 Residence | Same House |
| Birth Country | England |
| Birthplace (normalized) | england |
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 Joseph Brennan across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Joseph Brennan
Head · 1940 · age 66 · b. ~1874 · Massachusetts
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Middlesex-County, Massachusetts
Open full size
1940 US Federal Census — Middlesex-County, Massachusetts
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01609-00354)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Irvine J Hunter | 23 | Son | Distributor | Canada-English |
| 2 | John D Hunter | 21 | Son | Clerk | Canada-English |
| 3 | Michael J Downing | 44 | Head | Machinist | Massachusetts |
| 4 | Mary E Downing | 34 | Wife | — | Canada-English |
| 5 | Irene M Downing | 13 | Daughter | — | Massachusetts |
| 6 | Joseph Downing | 12 | Son | — | Massachusetts |
| 7 | George Downing | 10 | Son | — | Massachusetts |
| 8 | Delbert F Downing | 8 | Son | — | Massachusetts |
| 9 | James W Downing | 6 | Son | — | Massachusetts |
| 10 | Walter M Cameron | 64 | Head | Laborer | Canada-English |
| 11 | Helen A Cameron | 46 | Wife | — | Massachusetts |
| 12 | James A Cameron | 47 | Cousin | — | Canada-English |
| 13 | Thomas P Morris | 41 | Head | Laborer | Massachusetts |
| 14 | Mildred C Morris | 38 | Wife | — | Massachusetts |
| 15 | Thomas W Morris | 7 | Son | — | Massachusetts |
| 16 | Robert E Morris | 5 | Son | — | Massachusetts |
| 17 | Francis J Morris | 2 | Son | — | Massachusetts |
| 18 | James L Brennan | 39 | Head | Manager | England |
| 19 | Helen A Brennan | 38 | Wife | Salesgirl | Massachusetts |
| 20 | Patricia A King | 3 | Niece | — | Massachusetts |
| 21 | Joseph M Brennan THIS PERSON | 66 | Head | — | England |
| 22 | Margaret J Brennan | 60 | Wife | — | England |
| 23 | Arthur J Brennan | 31 | Son | Laborer | Massachusetts |
| 24 | Margaret L Brennan | 18 | Daughter | Salesgirl | Massachusetts |
| 25 | Reuben S Williams | 56 | Head | — | Canada-English |
| 26 | Emily P Williams | 46 | Wife | — | Massachusetts |
| 27 | William W Williams | 24 | Son | Installing Pumps | Massachusetts |
| 28 | Robert F Williams | 20 | Son | Laborer | Massachusetts |
| 29 | Mary P Williams | 17 | Daughter | — | Massachusetts |
| 30 | Frederick C Williams | 15 | Son | — | Massachusetts |
| 31 | George E Williams | 12 | Son | — | Massachusetts |
| 32 | Kenneth S Williams | 9 | Son | — | Massachusetts |
| 33 | Gloria E Williams | 7 | Daughter | — | Massachusetts |
| 34 | Arvid D Larson | 32 | Head | Steeple Jack | Sweden |
| 35 | Kathleen M Larson | 34 | Wife | — | Massachusetts |
| 36 | Paul J Lacey | 17 | Step-son | — | Massachusetts |
| 37 | Alice B Lacey | 16 | Step-daughter | — | Massachusetts |
| 38 | Stanley W Lacey | 14 | Step-son | — | Massachusetts |
| 39 | Marjorie M Lacey | 13 | Step-daughter | — | Massachusetts |
| 40 | Muriel G Lacey | 11 | Step-daughter | — | Massachusetts |
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)