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James Robbins — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Lake-County, Illinois
Our Model Tree links this James Robbins across the 1930 and 1940 US Censuses in Lake-County, Illinois (XGBoost, ~Confirmed) — first a son (b.~1929), then head of a 7-person household.
Age 11
b. ~1929
Male
Son
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Lake-County, Illinois |
| Surname | Robbins |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Libertyville Village |
| 1935 Residence (County) | Lake |
| Additional Details | |
| Highest Grade | 6 |
| 1935 Residence | Same House |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Libertyville Village |
| Est. Birth Year | ~1929 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| Louise Robbins | Daughter | — | 17 | ~1923 |
| Norma Robbins | Daughter | — | 16 | ~1924 |
| James Robbins | Son | — | 11 | ~1929 |
| William Robbins | Son | — | 19 | ~1921 |
| Margery Robbins | Daughter | — | 10 | ~1930 |
| Horace Robbins | Head | — | 49 | ~1891 |
| Louisa Robbins | Spouse | — | 53 | ~1887 |
Census Appearances
1930
Dupage, Illinois
Son, age 1
Dupage, Illinois · implied b. ~1929 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Robbins |
| Given Name | James W. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Wisconsin |
| Mother's Birthplace | Wisconsin |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Lake-County, Illinois
Son, age 11
Lake-County, Illinois · implied b. ~1929 — 7 household members
| Surname | Robbins |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Libertyville Village |
| 1935 Residence (County) | Lake |
| Highest Grade | 6 |
| 1935 Residence | Same House |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
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 Robbins across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
James Robbins
Son · 1940 · age 11 · b. ~1929 · Illinois
★ You are viewing this record
Sibling
Norma Robbins
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Louise Robbins
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margery Robbins
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Robbins
Sibling · 1940 · age 19
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 — Lake-County, Illinois
Open full size
1940 US Federal Census — Lake-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00829-00514)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Horace W. Robbins | 49 | Head | Mill Work | New Jersey |
| 2 | Louisa Robbins | 53 | Wife | — | England |
| 3 | William K. Robbins | 19 | Son | Apprentice Litho Type Operator | Illinois |
| 4 | Louise Robbins | 17 | Daughter | — | Illinois |
| 5 | Norma Jane Robbins | 16 | Daughter | — | Illinois |
| 6 | James Robbins THIS PERSON | 11 | Son | — | Illinois |
| 7 | Margery J. Robbins | 10 | Daughter | — | Illinois |
| 8 | Almert Johnson | 29 | Head | Science Teacher | Michigan |
| 9 | Esther H. Johnson | 36 | Wife | — | Michigan |
| 10 | Darlene Joy Johnson | 10 | Daughter | — | Illinois |
| 11 | Walter A. Kuester | 39 | Head | Laborer | Illinois |
| 12 | Rosalene Kuester | 29 | Wife | — | Illinois |
| 13 | Dolores Kuester | 9 | Daughter | — | Illinois |
| 14 | Jacklyn Kuester | 2 | Daughter | — | Illinois |
| 15 | George P. Bogue | 28 | Head | Manager | Illinois |
| 16 | Nola M. Bogue | 24 | Wife | — | Illinois |
| 17 | Judith L. Bogue | 1 | Daughter | — | Illinois |
| 18 | Marion F. Geary | 21 | Sister in law | House Work | Illinois |
| 19 | Frederick Riskerson | 62 | Head | Engineer | Illinois |
| 20 | Lillian Riskerson | 49 | Wife | — | Illinois |
| 21 | Katherine Mcburn | 37 | Lodger | — | So Dakota |
| 22 | William P. Graham | 63 | Head | Butcher | Canada |
| 23 | Harriet Graham | 59 | Wife | — | Illinois |
| 24 | William F. Graham | 33 | Son | Hair Stylist | Illinois |
| 25 | John W. Graham | 23 | Son | Yardman | Illinois |
| 26 | Frank B. Wilson | 62 | Head | Mechanic | Illinois |
| 27 | Harry R. Wilson | 19 | Son | Weaver | Illinois |
| 28 | Robert F. Wilson | 19 | Son | Mechanic | Illinois |
| 29 | Reynold Geary | 33 | Head | Line Man | Illinois |
| 30 | Nielda Geary | 33 | Wife | Telephone Operator | Missouri |
| 31 | Margot Geary | 4 | Daughter | — | Illinois |
| 32 | Jean Geary | 2 | Daughter | — | Illinois |
| 33 | Blanche Vavrick | 54 | Lodger | Housekeeper | France |
| 34 | William Kapheim | 32 | Head | Accountant | Illinois |
| 35 | Estelle Kapheim | 30 | Wife | — | Illinois |
| 36 | Ann M. Kapheim | 5 | Daughter | — | Illinois |
| 37 | Fred H. Remker | 72 | Head | Elevator Man | Illinois |
| 38 | Emeline Remker | 72 | Wife | — | Illinois |
| 39 | Kyle Remker | 46 | Son | Attendant | Illinois |
| 40 | William Lyman Miller | 46 | Head | Salesman | New York |
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)