JB
James Brooks — 1940 US Census Record
Model Tree available1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this James Brooks across the 1920, 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed), with identified parents Michael & Helen — first a head (b.~1904), then head of a 3-person household.
Age 36
b. ~1904
Male
Head
Born: England
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | Brooks |
| Given Name | James T. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 36 |
| Marital Status | Married |
| Birthplace | England |
| 1935 Residence (City) | CHELMSFORD |
| 1935 Residence (County) | MIDDLESEX |
| Naturalization Status | Naturalized |
| Additional Details | |
| Occupation | Carpenter |
| Industry | Construction |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1000 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth Country | England |
| Birthplace (normalized) | england |
| Occupation | Carpenter |
| Township / Ward | Chelmsford |
| Est. Birth Year | ~1904 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| James Brooks | Head | — | 36 | ~1904 |
| James Brooks | Son | — | 4 | ~1936 |
| Mary Brooks | Spouse | — | 39 | ~1901 |
Census Appearances
1920
Middlesex, Massachusetts
Son, age 14
Middlesex, Massachusetts · implied b. ~1906 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Brooks |
| Given Name | James J |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | England |
| Year of Immigration | 1907 |
| Naturalization Status | Naturalized |
| Father's Birthplace | England |
| Mother's Birthplace | England |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth Country | England |
| Year of Naturalization | 1912 |
| Birthplace (normalized) | england |
1930
Middlesex, Massachusetts
Head, age 26
Middlesex, Massachusetts · implied b. ~1904 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Brooks |
| Given Name | James T |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Married |
| Birthplace | England |
| Naturalization Status | Naturalized |
| Year of Immigration | 1908 |
| Age at First Marriage | 23 |
| Father's Birthplace | England |
| Mother's Birthplace | England |
| Occupation | Janitor |
| Industry | Cotton Mill |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Home Owned/Rented | R |
| Home Value / Rent | 13.00 |
| Veteran | No |
| Birth Country | England |
| Birthplace (normalized) | england |
1940
Middlesex-County, Massachusetts
Head, age 36
Middlesex-County, Massachusetts · implied b. ~1904 — 3 household members
| Surname | Brooks |
| Given Name | James T. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 36 |
| Marital Status | Married |
| Birthplace | England |
| 1935 Residence (City) | CHELMSFORD |
| 1935 Residence (County) | MIDDLESEX |
| Naturalization Status | Naturalized |
| Occupation | Carpenter |
| Industry | Construction |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1000 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| 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 James Brooks across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Michael Brooks (~0.92 confidence) and mother Helen Brooks (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Michael Brooks
b. ~1874
Source father
● Household
· direct · ~0.92
Mother
Helen Brooks
b. ~1874
Source mother
● Household
· direct · ~0.92
This person
Anchor record
James Brooks
Head · 1940 · age 36 · b. ~1904 · Massachusetts
★ You are viewing this record
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-t0627-01603-00774)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Peter Harrington | 32 | Lodger | Brick Layer | Massachusetts |
| 2 | Mary J. Mc Gillian | 77 | Head | — | Northern Ireland |
| 3 | Mary R. Kelley | 45 | Daughter | — | Massachusetts |
| 4 | Timothy Harrington | 80 | Head | — | Irish Free State |
| 5 | Catherine Harrington | 70 | Wife | — | Irish Free State |
| 6 | Anne Harrington | 45 | Daughter | Sewer | Massachusetts |
| 7 | Gladys Harrington | 40 | Daughter | Teacher | Massachusetts |
| 8 | Timothy F. Harrington | 32 | Son | Laborer | Massachusetts |
| 9 | George Mc Namara | 40 | Head | Weaver | Massachusetts |
| 10 | Emily Mc Namara | 38 | Wife | Practical Nurse | Massachusetts |
| 11 | Peter Mc Namara | 6 | Son | — | Massachusetts |
| 12 | George Mc Namara | 5 | Son | — | Massachusetts |
| 13 | Robert Mc Namara | 3 | Son | — | Massachusetts |
| 14 | Robert Gourley | 67 | Father-in-law | — | Northern Ireland |
| 15 | J. Frank Carroll | 38 | Head | Woolen Spinner | Massachusetts |
| 16 | Mary M. Carroll | 34 | Wife | — | Massachusetts |
| 17 | Frederick Kinney | 48 | Head | Painter | Canada English |
| 18 | Ethel M. Kinney | 45 | Wife | — | Massachusetts |
| 19 | Frederick Jr. Kinney | 18 | Son | — | Massachusetts |
| 20 | Mitchell A. Jason | 33 | Lodger | Knitter | Massachusetts |
| 21 | Joseph P. Kennedy | 32 | Head | Copper Smith | Massachusetts |
| 22 | Mary I. Kennedy | 31 | Wife | — | Massachusetts |
| 23 | Louise Kennedy | 14 | Daughter | — | Massachusetts |
| 24 | Mary E. Kennedy | 9 | Daughter | — | Massachusetts |
| 25 | Katherine Kennedy | 7 | Daughter | — | Massachusetts |
| 26 | Jessie Kennedy | 4 | Daughter | — | Massachusetts |
| 27 | Josephine Kennedy | 2 | Daughter | — | Massachusetts |
| 28 | Annie Kennedy | 1 | Daughter | — | Massachusetts |
| 29 | Jessie Lenox | 65 | Head | Weaver | Vermont |
| 30 | Frederick Mellen | 58 | Lodger | Carpenter | Massachusetts |
| 31 | Edward Farrell | 32 | Head | Laborer | Massachusetts |
| 32 | Irene Farrell | 31 | Wife | — | Massachusetts |
| 33 | Edward Jr. Farrell | 13 | Son | — | Massachusetts |
| 34 | Rita E. Farrell | 10 | Daughter | — | Massachusetts |
| 35 | Catherine Mc Kennedy | 68 | Head | — | Irish Free State |
| 36 | Henry Mc Kennedy | 33 | Son | Painter | Massachusetts |
| 37 | James Mc Kennedy | 24 | Son | Farmer | Massachusetts |
| 38 | James T. Brooks THIS PERSON | 36 | Head | Carpenter | England |
| 39 | Mary J. Brooks | 39 | Wife | — | Massachusetts |
| 40 | James T. Jr. Brooks | 4 | Son | — | Massachusetts |
Pedigree Summary
James
Gen 1 · 2 parents
~0.92
Max depth 4 (1900–1950 window)
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)