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James Brock — 1940 US Census Record
Linked across censuses1940 United States Federal Census · St.-Louis-City-County, Missouri
Our Model Tree links this James Brock across the 1930 and 1940 US Censuses in St.-Louis-City-County, Missouri (XGBoost, ~Confirmed) — first a head (b.~1880), then head of a 5-person household.
Age 60
b. ~1880
Male
Head
Born: Denmark
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | St.-Louis-City-County, Missouri |
| Surname | Brock |
| Given Name | James Sr. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 60 |
| Marital Status | Married |
| Birthplace | Denmark |
| 1935 Residence (City) | St. Louis |
| 1935 Residence (County) | St. Louis |
| Naturalization Status | Naturalized |
| Additional Details | |
| Occupation | Contractor |
| Industry | Concrete Co. |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 2400 |
| Highest Grade | H-3 |
| 1935 Residence | Same place |
| Birth Country | Denmark |
| Birthplace (normalized) | denmark |
| Occupation | Contractor |
| Township / Ward | St Louis |
| Est. Birth Year | ~1880 |
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 James | Age | Birth yr |
|---|---|---|---|---|
| James Brock | Head | — | 60 | ~1880 |
| James Brock | Son | — | 18 | ~1922 |
| Viggo Brock | Son | — | 15 | ~1925 |
| Earl Brock | Son | — | 17 | ~1923 |
| Johanna Brock | Spouse | — | 52 | ~1888 |
Census Appearances
1930
St Louis, …
Head, age 51
St Louis, Missouri · implied b. ~1879 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Brock |
| Given Name | James |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 51 |
| Marital Status | Married |
| Birthplace | Denmark |
| Naturalization Status | Naturalized |
| Year of Immigration | 1901 |
| Age at First Marriage | 42 |
| Father's Birthplace | Denmark |
| Mother's Birthplace | Denmark |
| Occupation | Carpenter |
| Industry | Manufacturer |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | Danish |
| Home Owned/Rented | R |
| Home Value / Rent | 35.00 |
| Radio Set | R |
| Veteran | No |
| Birth Country | Denmark |
| Birthplace (normalized) | denmark |
1940
St.-Louis-City-County, Missouri
Head, age 60
St.-Louis-City-County, Missouri · implied b. ~1880 — 5 household members
| Surname | Brock |
| Given Name | James Sr. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 60 |
| Marital Status | Married |
| Birthplace | Denmark |
| 1935 Residence (City) | St. Louis |
| 1935 Residence (County) | St. Louis |
| Naturalization Status | Naturalized |
| Occupation | Contractor |
| Industry | Concrete Co. |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 2400 |
| Highest Grade | H-3 |
| 1935 Residence | Same place |
| Birth Country | Denmark |
| Birthplace (normalized) | denmark |
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 Brock across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
James Brock
Head · 1940 · age 60 · b. ~1880 · Missouri
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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 — St.-Louis-City-County, Missouri
Open full size
1940 US Federal Census — St.-Louis-City-County, Missouri
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02205-00448)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | James H. Eilermann | 35 | Head | Policeman | Missouri |
| 42 | Catherine Eilermann | 35 | Wife | — | Missouri |
| 43 | Malcolm Eilermann | 10 | Son | — | Missouri |
| 44 | James Eilermann | 7 | Son | — | Missouri |
| 45 | Louis Eilermann | 4 | Son | — | Missouri |
| 46 | Edward Gorman | 44 | Head | Maker | Missouri |
| 47 | Veronica Gorman | 38 | Wife | — | Missouri |
| 48 | Theresa M. Gorman | 13 | Daughter | — | Missouri |
| 49 | Mary Elizabeth Gorman | 10 | Daughter | — | Missouri |
| 50 | Rose Mary Gorman | 8 | Daughter | — | Missouri |
| 51 | Joseph Gorman | 5 | Son | — | Missouri |
| 52 | James Sr. Brock THIS PERSON | 60 | Head | Contractor | Denmark |
| 53 | Johanna Brock | 52 | Wife | — | Denmark |
| 54 | James Jr. Brock | 18 | Son | Helper | Missouri |
| 55 | Earl Brock | 17 | Son | — | Missouri |
| 56 | Viggo Brock | 15 | Son | — | Missouri |
| 57 | William Doss | 23 | Head | Assembler | Missouri |
| 58 | Sarah Doss | 19 | Wife | — | Missouri |
| 59 | William Jr. Doss | 1 | Son | — | Missouri |
| 60 | Edward Nehmenson | 32 | Head | Draftsman | Missouri |
| 61 | Gladys Nehmenson | 25 | Wife | — | Missouri |
| 62 | June Nehmenson | 8 | Daughter | — | Missouri |
| 63 | Ruth Nehmenson | 7 | Daughter | — | Missouri |
| 64 | Minnie Schroer | 44 | Head | Dressmaker | Missouri |
| 65 | Richard Schroer | 14 | Son | — | Missouri |
| 66 | Gustav Schroer | 12 | Son | — | Missouri |
| 67 | Margaret Eschmund | 68 | Mother | — | Germany |
| 68 | Michael Rothery | 64 | Head | Fireman | New York |
| 69 | Frances Rothery | 45 | Wife | — | Eire |
| 70 | Charles Rothery | 23 | Son | Draftsman | Missouri |
| 71 | Edward Rothery | 20 | Son | Draftsman | Missouri |
| 72 | Harry Richard | 57 | Head | Salesman | Missouri |
| 73 | Katherine Richard | 47 | Wife | — | Missouri |
| 74 | Preston Richard | 28 | Son | Clerk | Missouri |
| 75 | Joseph Corrigan | 56 | Head | Huckster | Missouri |
| 76 | Ann Corrigan | 54 | Wife | — | Missouri |
| 77 | Joseph T. Corrigan | 25 | Son | Chauffer | Missouri |
| 78 | Betty Ann Corrigan | 10 | Daughter | — | Missouri |
| 79 | Joseph Green | 76 | Head | — | Missouri |
| 80 | Sophia Green | 74 | Wife | — | Missouri |
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)