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Robert Jacobs — 1940 US Census Record
Linked across censuses1940 United States Federal Census · St.-Lawrence-County, New York
Our Model Tree links this Robert Jacobs across the 1930 and 1940 US Censuses in St.-Lawrence-County, New York (XGBoost, ~Confirmed) — first a son (b.~1928), then head of a 10-person household.
Age 12
b. ~1928
Male
Son
Born: New York
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | St.-Lawrence-County, New York |
| Surname | Jacobs |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | New York |
| 1935 Residence (City) | Massena |
| 1935 Residence (County) | St. Law |
| Additional Details | |
| Highest Grade | No 7 |
| 1935 Residence | New York |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
| Township / Ward | Louisville Town |
| Est. Birth Year | ~1928 |
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.
10 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Robert | Age | Birth yr |
|---|---|---|---|---|
| Francis Jacobs | Son | — | 10 | ~1930 |
| Doris Jacobs | Daughter | — | 8 | ~1932 |
| Barbara Jacobs | Daughter | — | 1 | ~1939 |
| Mildred Jacobs | Daughter | — | 18 | ~1922 |
| Beverly Jacobs | Daughter | — | 9 | ~1931 |
| Ector Jacobs | Other | — | 23 | ~1917 |
| Myrtle Jacobs | Spouse | — | 41 | ~1899 |
| Lawrence Jacobs | Son | — | 15 | ~1925 |
| Joseph Jacobs | Head | — | 44 | ~1896 |
| Robert Jacobs | Son | — | 12 | ~1928 |
Census Appearances
1930
St Lawrence, …
Son, age 3
St Lawrence, New York · implied b. ~1927 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jacob |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | New York |
| Father's Birthplace | Canada French |
| Mother's Birthplace | New York |
| Occupation | none |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
1940
St.-Lawrence-County, New …
Son, age 12
St.-Lawrence-County, New York · implied b. ~1928 — 10 household members
| Surname | Jacobs |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | New York |
| 1935 Residence (City) | Massena |
| 1935 Residence (County) | St. Law |
| Highest Grade | No 7 |
| 1935 Residence | New York |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
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 Jacobs across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Robert Jacobs
Son · 1940 · age 12 · b. ~1928 · New York
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Sibling
Mildred Jacobs
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Francis Jacobs
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lawrence Jacobs
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Doris Jacobs
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Beverly Jacobs
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Barbara Jacobs
Sibling · 1940 · age 1
Source co-child of head (derived)
● Co-child · derived · ~0.88
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — St.-Lawrence-County, New York
Open full size
1940 US Federal Census — St.-Lawrence-County, New York
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02769-00964)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Elmer Lafave | 3 | Daughter | — | New York |
| 2 | Lawrence Lafave | 1 | Son | — | New York |
| 3 | Leon Eaton | 29 | Head | Laborer | New York |
| 4 | Andrew Conclin | 73 | Head | Farmer | New York |
| 5 | Catherine Conclin | 75 | Sister | — | New York |
| 6 | Wesley Cole | 47 | Head | Farmer | New York |
| 7 | Iona Cole | 45 | Wife | — | New York |
| 8 | Richard Gardner | 67 | Head | — | New York |
| 9 | Alonzo Bannister | 58 | Head | Farmer | New York |
| 10 | Ina Bannister | 57 | Wife | — | New Hampshire |
| 11 | Ray Mcelheran | 38 | Head | Machinist | Canada Eng |
| 12 | Lora Mcelheran | 35 | Wife | — | Canada Eng |
| 13 | Grace Mcelheran | 13 | Daughter | — | New York |
| 14 | Leta Mcelheran | 11 | Daughter | — | New York |
| 15 | Hugh Mcelheran | 9 | Son | — | New York |
| 16 | Betty Mcelheran | 7 | Daughter | — | New York |
| 17 | Janet Mcelheran | 3 | Daughter | — | New York |
| 18 | Edward Warner | 38 | Head | Farmer | New York |
| 19 | Beatrice Warner | 34 | Wife | — | New York |
| 20 | Stanley Warner | 13 | Son | — | New York |
| 21 | Grace Warner | 11 | Daughter | — | New York |
| 22 | Evelyn Warner | 9 | Daughter | — | New York |
| 23 | Catherine Wells | 91 | Mother | — | New York |
| 24 | Joseph Jacobs | 44 | Head | Foreman Wire Mill | New York |
| 25 | Myrtle Jacobs | 41 | Wife | — | New York |
| 26 | Mildred Jacobs | 18 | Daughter | — | New York |
| 27 | Lawrence Jacobs | 15 | Son | New Worker | New York |
| 28 | Robert Jacobs THIS PERSON | 12 | Son | — | New York |
| 29 | Francis Jacobs | 10 | Son | — | New York |
| 30 | Beverly Jacobs | 9 | Daughter | — | New York |
| 31 | Doris Jacobs | 8 | Daughter | — | New York |
| 32 | Barbara Jacobs | 1 | Daughter | — | New York |
| 33 | Ector Jacobs | 23 | Brother | Laborer | New York |
| 34 | Mary Molnar | 20 | Head | Housework | New York |
| 35 | Anna Brannon | 71 | Head | — | New York |
| 36 | Elijah Brothers | 61 | Head | Farmer | New York |
| 37 | Emma Brothers | 57 | Wife | — | New York |
| 38 | Theodore Brothers | 24 | Son | Court Clerk | New York |
| 39 | Marjorie Brothers | 18 | Daughter | New Worker | New York |
| 40 | Charles Brothers | 15 | Son | New Worker | New York |
Related Census Records
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)