RL
Robert Long — 1940 US Census Record
Model Tree available1940 United States Federal Census · Champaign-County, Illinois
Our Model Tree links this Robert Long across the 1920, 1930 and 1940 US Censuses in Champaign-County, Illinois (XGBoost, ~Confirmed), with identified parents John & Mae — first a son (b.~1920), then head of a 7-person household.
Age 20
b. ~1920
Male
Son
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Champaign-County, Illinois |
| Surname | Long |
| Given Name | Robert J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | St. Joseph |
| 1935 Residence (County) | Champaign |
| Additional Details | |
| Occupation | 24 |
| Industry | salesman |
| Class of Worker | department store |
| Highest Grade | C 2 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | 24 |
| Township / Ward | St Joseph |
| Est. Birth Year | ~1920 |
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 Robert | Age | Birth yr |
|---|---|---|---|---|
| Mary Long | Daughter | — | 7 | ~1933 |
| John Long | Head | — | 43 | ~1897 |
| Emma Ehmen | Other | — | 75 | ~1865 |
| John Long | Son | — | 11 | ~1929 |
| Robert Long | Son | — | 20 | ~1920 |
| William Long | Son | — | 6 | ~1934 |
| Mae Long | Spouse | — | 42 | ~1898 |
Census Appearances
1920
Champaign, Illinois
Son, age
Champaign, Illinois · implied b. ~1920 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lang |
| Given Name | Robert J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 0 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Champaign, Illinois
Son, age 11
Champaign, Illinois · implied b. ~1919 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lang |
| Given Name | Robert J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Indiana |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Champaign-County, Illinois
Son, age 20
Champaign-County, Illinois · implied b. ~1920 — 7 household members
| Surname | Long |
| Given Name | Robert J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | St. Joseph |
| 1935 Residence (County) | Champaign |
| Occupation | 24 |
| Industry | salesman |
| Class of Worker | department store |
| Highest Grade | C 2 |
| 1935 Residence | Same place |
| 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 Robert Long across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Lang (~0.92 confidence) and mother Mae Lang (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Lang
b. ~1897
Source father
● Household
· direct · ~0.92
Mother
Mae Lang
b. ~1899
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Robert Long
Son · 1940 · age 20 · b. ~1920 · Illinois
★ You are viewing this record
Sibling
John Long
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Long
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Long
Sibling · 1940 · age 6
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 — Champaign-County, Illinois
Open full size
1940 US Federal Census — Champaign-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00766-00735)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | William J. Feely | 6 | Son | — | Illinois |
| 42 | Charles O. Feely | 56 | Head | — | Illinois |
| 43 | Margaret E. Feely | 57 | Wife | — | Illinois |
| 44 | Catherine F. Leonard | 28 | Daughter | 31 | Illinois |
| 45 | Mary A. Feely | 20 | Daughter | 42 | Illinois |
| 46 | Patricia P. Leonard | 1 | Granddaughter | — | Michigan |
| 47 | Glenn F. Mccarty | 39 | Head | 40 | Illinois |
| 48 | Marie E. Mccarty | 38 | Wife | — | Illinois |
| 49 | S. Martin | 18 | Son | — | Illinois |
| 50 | Warren C. Martin | 16 | Son | — | Illinois |
| 51 | Betty J. Martin | 12 | Daughter | — | Illinois |
| 52 | Guy Reed | 35 | Head | 42 | Illinois |
| 53 | Eddie Lee Reed | 34 | Wife | — | Tennessee |
| 54 | Samuel R. Baker | 57 | Head | 10 | Iowa |
| 55 | Cora E. Baker | 57 | Wife | 45 | Illinois |
| 56 | Marshall Baker | 25 | Son | — | Illinois |
| 57 | John M. Long | 43 | Head | 24 | Indiana |
| 58 | Mae E. Long | 42 | Wife | 40 | Indiana |
| 59 | Robert J. Long THIS PERSON | 20 | Son | 24 | Illinois |
| 60 | John D. Long | 11 | Son | — | Illinois |
| 61 | Mary L. Long | 7 | Daughter | — | Illinois |
| 62 | William J. Long | 6 | Son | — | Illinois |
| 63 | Emma W. Ehmen | 75 | Lodger | 136 | Illinois |
| 64 | Wayne E. Shell | 36 | Head | 60 | Illinois |
| 65 | Keith W. Shell | 29 | Wife | — | Illinois |
| 66 | Abraham Laird | 78 | Head | — | Illinois |
| 67 | Robert Strong | 67 | Head | — | Illinois |
| 68 | Arley O. Peters | 56 | Lodger | 40 | Illinois |
| 69 | W. Albert Dukes | 67 | Head | 80 | Illinois |
| 70 | Maude S. Dukes | 65 | Wife | — | Illinois |
| 71 | William T. Cole | 51 | Head | 48 | Illinois |
| 72 | Hazel E. Cole | 46 | Wife | — | Illinois |
| 73 | William F. Cole | 17 | Son | — | Illinois |
| 74 | Ira J. Bishop | 32 | Head | 54 | Illinois |
| 75 | Mary L. Bishop | 27 | Wife | — | Illinois |
| 76 | Arthur Ferdinandson | 47 | Head | 44 | Illinois |
| 77 | Eva T. Ferdinandson | 39 | Wife | — | Louisiana |
| 78 | Mary Ferdinandson | 19 | Daughter | 54 | Arkansas |
| 79 | Frances Ferdinandson | 17 | Daughter | — | Arkansas |
| 80 | Charles Ferdinandson | 16 | Son | — | Arkansas |
Related Census Records
Pedigree Summary
Robert + 3 siblings
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)