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Robert Grant — 1940 US Census Record
Model Tree available1940 United States Federal Census · Alameda-County, California
Our Model Tree links this Robert Grant across the 1920, 1930 and 1940 US Censuses in Alameda-County, California (XGBoost, ~Confirmed), with identified parents James & Ellen — first a head (b.~1897), then head of a 5-person household.
Age 43
b. ~1897
Male
Head
Born: Scotland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Alameda-County, California |
| Surname | Grant |
| Given Name | Robert |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 43 |
| Marital Status | Married |
| Birthplace | Scotland |
| 1935 Residence (City) | Oakland City |
| 1935 Residence (County) | Alameda |
| Naturalization Status | Naturalized |
| Additional Details | |
| Occupation | Engineer |
| Industry | Laundry |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 2100 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
| Occupation | Engineer |
| Township / Ward | Oakland City |
| Est. Birth Year | ~1897 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Robert | Age | Birth yr |
|---|---|---|---|---|
| Helene Grant | Daughter | — | 19 | ~1921 |
| James Grant | Other | — | 74 | ~1866 |
| Grace Grant | Spouse | — | 40 | ~1900 |
| James Grant | Son | — | 14 | ~1926 |
| Robert Grant | Head | — | 43 | ~1897 |
Census Appearances
1920
San Francisco, …
Son, age 22
San Francisco, California · implied b. ~1898 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Grant |
| Given Name | Robert M. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Married |
| Birthplace | Scotland |
| Year of Immigration | 1901 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth Country | Scotland |
| Year of Naturalization | 1910 |
| Birthplace (normalized) | scotland |
1930
Alameda, California
Head, age 32
Alameda, California · implied b. ~1898 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Grant |
| Given Name | Robert |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | Scotland |
| Naturalization Status | Naturalized |
| Year of Immigration | 1902 |
| Age at First Marriage | 23 |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Occupation | Asst Supt. |
| Industry | Laundry |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Home Owned/Rented | R |
| Home Value / Rent | 40 |
| Radio Set | R |
| Veteran | Yes |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
1940
Alameda-County, California
Head, age 43
Alameda-County, California · implied b. ~1897 — 5 household members
| Surname | Grant |
| Given Name | Robert |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 43 |
| Marital Status | Married |
| Birthplace | Scotland |
| 1935 Residence (City) | Oakland City |
| 1935 Residence (County) | Alameda |
| Naturalization Status | Naturalized |
| Occupation | Engineer |
| Industry | Laundry |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 2100 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
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 Robert Grant across 3 US Census years (1920, 1930 and 1940) in 3 locations, using XGBoost record linkage. Identified parents: father James Grant (~0.92 confidence) and mother Ellen Grant (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
James Grant
b. ~1868
Source father
● Household
· direct · ~0.92
Mother
Ellen Grant
b. ~1872
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Robert Grant
Head · 1940 · age 43 · b. ~1897 · California
★ 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 — Alameda-County, California
Open full size
1940 US Federal Census — Alameda-County, California
Page Contents
38 people indexed on this census page (nara:1940:m-t0627-00433-00965)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Robert Grant THIS PERSON | 43 | Head | Engineer | Scotland |
| 2 | Grace Grant | 40 | Wife | — | Calif |
| 3 | Helene Grant | 19 | Daughter | — | Calif |
| 4 | James Grant | 14 | Son | — | Calif |
| 5 | James Grant | 74 | Father | Retired | Scotland |
| 7 | Clifford Fowler | 26 | Head | Business Machines | Connecticut |
| 8 | Muriel Fowler | 27 | Wife | — | Calif |
| 9 | George Haas | 39 | Head | Store | Calif |
| 10 | Anna M. Haas | 32 | Wife | — | Calif |
| 11 | Arnold Haas | 8 | Son | — | Calif |
| 12 | Harold Haas | 5 | Son | — | Calif |
| 13 | Shirley Ann Haas | 3 | Daughter | — | Calif |
| 14 | Jessie Campbell | 74 | Head | Retired | New Zealand |
| 15 | Jessie Campbell | 71 | Wife | — | Missouri |
| 16 | Virgil Ekstrom | 40 | Head | Marine | Kansas |
| 17 | Flora Ekstrom | 39 | Wife | Telephone | Calif |
| 18 | Helen Martin | 43 | Head | — | Michigan |
| 19 | Dick Martin | 14 | Son | — | Washington |
| 20 | Robert Martin | 13 | Son | — | Washington |
| 21 | Donald Martin | 23 | Head | — | Washington |
| 22 | Maxine Martin | 22 | Wife | Pumps Co. | Arkansas |
| 23 | Jay Dean | 59 | Head | — | Texas |
| 24 | Nell Dean | 42 | Wife | — | Missouri |
| 25 | Lila Dean | 17 | Daughter | — | Missouri |
| 26 | Allen Dean | 16 | Son | — | Missouri |
| 27 | Barbara Dean | 13 | Daughter | — | Missouri |
| 28 | Laura Dean | 11 | Daughter | — | Kansas |
| 29 | Nina Dean | 9 | Daughter | — | Texas |
| 30 | Helen Dean | 7 | Daughter | — | Texas |
| 31 | Sue Dean | 3 | Daughter | — | Calif |
| 32 | Forrest Dean | 0 | Son | — | Calif |
| 33 | Charles Vandenburgh | 71 | Head | — | Calif |
| 35 | William Walters | 39 | Head | Electrical Co. | Indiana |
| 36 | Gladys Walters | 38 | Wife | — | Calif |
| 37 | William Walters | 15 | Son | — | Calif |
| 38 | Kenneth Walters | 14 | Son | — | Calif |
| 39 | Lawrence Walters | 11 | Son | — | Calif |
| 40 | Frances Day | 79 | Head | — | Ohio |
Pedigree Summary
Robert
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)