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James Robertson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this James Robertson across the 1920, 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed), with identified parents David & Agnes — first a head (b.~1905), then head of a 6-person household.
Age 35
b. ~1905
Male
Head
Born: Massachusetts
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | Robertson |
| Given Name | James A |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 35 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Saugus |
| 1935 Residence (County) | Middlesex |
| Additional Details | |
| Occupation | Cleaner |
| Industry | Logotype Woodwork |
| Class of Worker | PW |
| Hours Worked | 56 |
| Income (1939) | 988 |
| Highest Grade | Hs 2 |
| 1935 Residence | Massachusetts |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Cleaner |
| Township / Ward | Malden City |
| Est. Birth Year | ~1905 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| James Robertson | Head | — | 35 | ~1905 |
| Lawrence Robertson | Son | — | 3 | ~1937 |
| James Robertson | Son | — | 9 | ~1931 |
| Richard Robertson | Son | — | 7 | ~1933 |
| Raymond Robertson | Son | — | 5 | ~1935 |
| Grace Robertson | Spouse | — | 31 | ~1909 |
Census Appearances
1920
Middlesex, Massachusetts
Son, age 14
Middlesex, Massachusetts · implied b. ~1906 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Robertson |
| Given Name | James A. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Middlesex, Massachusetts
Son, age 24
Middlesex, Massachusetts · implied b. ~1906 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Robertson |
| Given Name | James A. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Occupation | Machine Operator |
| Industry | Clock Factory |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Middlesex-County, Massachusetts
Head, age 35
Middlesex-County, Massachusetts · implied b. ~1905 — 6 household members
| Surname | Robertson |
| Given Name | James A |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 35 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Saugus |
| 1935 Residence (County) | Middlesex |
| Occupation | Cleaner |
| Industry | Logotype Woodwork |
| Class of Worker | PW |
| Hours Worked | 56 |
| Income (1939) | 988 |
| Highest Grade | Hs 2 |
| 1935 Residence | Massachusetts |
| 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 Robertson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father David Robertson (~0.92 confidence) and mother Agnes Robertson (~0.92 confidence) and father David Robertson (~0.92 confidence) and mother Agnes Robertson (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
David Robertson
b. ~1862
Source father
● Household
· direct · ~0.92
Mother
Agnes Robertson
b. ~1866
Source mother
● Household
· direct · ~0.92
Father
David Robertson
b. ~1880
Source father
● Household
· direct · ~0.92
Mother
Agnes Robertson
b. ~1885
Source mother
● Household
· direct · ~0.92
This person
Anchor record
James Robertson
Head · 1940 · age 35 · b. ~1905 · 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
39 people indexed on this census page (nara:1940:m-t0627-01609-00323)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Lucy G Brauer | 20 | Daughter | House Maid | Massachusetts |
| 42 | Franklin J Brauer | 19 | Son | Mechanic | Massachusetts |
| 43 | George H Brauer | 17 | Son | — | Massachusetts |
| 44 | James A Robertson THIS PERSON | 35 | Head | Cleaner | Massachusetts |
| 45 | Grace G Robertson | 31 | Wife | — | Massachusetts |
| 46 | James A Jr Robertson | 9 | Son | — | Massachusetts |
| 47 | Richard P Robertson | 7 | Son | — | Massachusetts |
| 48 | Raymond F Robertson | 5 | Son | — | Massachusetts |
| 49 | Lawrence E Robertson | 3 | Son | — | Massachusetts |
| 51 | Conrad G Hanson | 31 | Head | Craftsman | Massachusetts |
| 52 | Hazel G Hanson | 31 | Wife | Waitress | Vermont |
| 53 | Kenneth Hanson | 11 | Son | — | Massachusetts |
| 54 | David J Muller | 45 | Head | Salesman | Germany |
| 55 | Annie R Muller | 63 | Wife | — | Germany |
| 56 | David D Muller | 33 | Son | Salesman | Massachusetts |
| 57 | Milton H Muller | 29 | Son | Auctioneer | Massachusetts |
| 58 | Charles E Laskey | 37 | Head | Chauffeur | Massachusetts |
| 59 | Catherine A Laskey | 36 | Wife | — | Massachusetts |
| 60 | Joseph E Laskey | 17 | Son | New Worker | Massachusetts |
| 61 | Eleanor G Laskey | 15 | Daughter | — | Massachusetts |
| 62 | Charles E Laskey | 13 | Son | — | Massachusetts |
| 63 | Doris F Laskey | 7 | Daughter | — | Massachusetts |
| 64 | Thomas F Shields | 34 | Head | Repair Man | Massachusetts |
| 65 | Mary A Shields | 30 | Wife | — | Massachusetts |
| 66 | Thomas F Jr Shields | 4 | Son | — | Massachusetts |
| 67 | William E Lane | 47 | Head | Laborer | Massachusetts |
| 68 | Prudence P Lane | 44 | Wife | — | Massachusetts |
| 69 | Beatrice H Lane | 19 | Daughter | House Maid | Massachusetts |
| 70 | Gertrude E Lane | 18 | Daughter | New Worker | Massachusetts |
| 71 | Robert E Lane | 16 | Son | New Worker | Massachusetts |
| 72 | Marjorie Lane | 10 | Daughter | — | Massachusetts |
| 73 | William E Jr Lane | 4 | Son | — | Massachusetts |
| 74 | Bridget A Doherty | 63 | Head | — | Eire |
| 75 | George A Doherty | 34 | Son | Bus Operator | Massachusetts |
| 76 | Dorothy E Doherty | 24 | Daughter | Stenographer | Massachusetts |
| 77 | Frank De Bastita | 44 | Head | Laborer | Italy |
| 78 | Libbe De Bastita | 46 | Wife | — | Italy |
| 79 | Ernest De Bastita | 21 | Son | Mechanic | Italy |
| 80 | Antonio V De Bastita | 21 | Son | Shoemaker | Italy |
Pedigree Summary
James
Gen 1 · 4 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)