RB
Robert Brown — 1940 US Census Record
Model Tree available1940 United States Federal Census · Will-County, Illinois
Our Model Tree links this Robert Brown across the 1920, 1930 and 1940 US Censuses in Will-County, Illinois (XGBoost, ~Confirmed), with identified parents Harry & Harry — first a son (b.~1909), then head of a 4-person household.
Age 31
b. ~1909
Male
Son
Born: Iowa
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Will-County, Illinois |
| Surname | Brown |
| Given Name | Robert R. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Joliet City |
| 1935 Residence (County) | Will |
| Additional Details | |
| Occupation | Engineer |
| Industry | Radio |
| Class of Worker | OA |
| Hours Worked | 48 |
| Income (1939) | 854 |
| Highest Grade | C 2 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Engineer |
| Township / Ward | Joliet City |
| Est. Birth Year | ~1909 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Robert | Age | Birth yr |
|---|---|---|---|---|
| Harry Brown | Head | — | 64 | ~1876 |
| Margaret Brown | Other | — | 8 | ~1932 |
| Robert Brown | Son | — | 31 | ~1909 |
| Emily Brown | Spouse | — | 50 | ~1890 |
Census Appearances
1920
Will, Illinois
Son, age 12
Will, Illinois · implied b. ~1908 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Brown |
| Given Name | Robert A |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Will, Illinois
Son, age 21
Will, Illinois · implied b. ~1909 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Brown |
| Given Name | Robert G |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | salesman |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Will-County, Illinois
Son, age 31
Will-County, Illinois · implied b. ~1909 — 4 household members
| Surname | Brown |
| Given Name | Robert R. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Joliet City |
| 1935 Residence (County) | Will |
| Occupation | Engineer |
| Industry | Radio |
| Class of Worker | OA |
| Hours Worked | 48 |
| Income (1939) | 854 |
| Highest Grade | C 2 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
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 Brown across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Harry Brown (~0.92 confidence) and father Harry Brown (~0.92 confidence) and father Harry Brown (~0.92 confidence) and mother Emily Brown (~0.92 confidence) and mother Emily Brown (~0.92 confidence) and mother Emily Brown (~0.92 confidence). The pedigree spans 1 generation with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Harry Brown
b. ~1876
Source father
● Household
· direct · ~0.92
Father
Harry Brown
b. ~1876
Source father
● Household
· direct · ~0.92
Father
Harry Brown
b. ~1876
Source father
● Household
· direct · ~0.92
Mother
Emily Brown
b. ~1884
Source mother
● Household
· direct · ~0.92
Mother
Emily Brown
b. ~1890
Source mother
● Household
· direct · ~0.92
Mother
Emily Brown
b. ~1883
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Robert Brown
Son · 1940 · age 31 · b. ~1909 · Illinois
★ 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 — Will-County, Illinois
Open full size
1940 US Federal Census — Will-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00907-00765)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Kathryn Gardner | 49 | Sister | Food Inspector | Illinois |
| 42 | Leo P. Mcginnis | 39 | Head | Inspector | Illinois |
| 43 | Viola Mcginnis | 39 | Wife | — | Illinois |
| 44 | Beverley Mcginnis | 13 | Daughter | — | Illinois |
| 45 | Carrie Fritz | 86 | Head | — | Ohio |
| 46 | Frank Fritz | 61 | Son | Laborer | Illinois |
| 47 | Warwick D. Mcclure | 42 | Head | Broker | Minnesota |
| 48 | Mary R. Mcclure | 42 | Wife | — | Wisconsin |
| 49 | Gordon Mcclure | 14 | Son | — | Minnesota |
| 50 | Sarah Mcclure | 4 | Daughter | — | Illinois |
| 51 | W. Law Stallings | 40 | Head | Chemist | Texas |
| 52 | Marian Stallings | 37 | Wife | — | Texas |
| 53 | Lawrence Stallings | 8 | Son | — | Kentucky |
| 54 | Katherine Stallings | 7 | Daughter | — | Kentucky |
| 55 | Mary Sullivan | 54 | Head | — | Eire |
| 56 | Margaret Sullivan | 32 | Daughter | Secretary | Illinois |
| 57 | Louise Sullivan | 28 | Daughter | Teacher | Illinois |
| 58 | Olive Sullivan | 23 | Daughter | Teacher | Illinois |
| 59 | Julia Sullivan | 21 | Daughter | Teacher | Illinois |
| 60 | Harry R. Brown | 64 | Head | Technician | Illinois |
| 61 | Emily Brown | 50 | Wife | — | Illinois |
| 62 | Robert R. Brown THIS PERSON | 31 | Son | Engineer | Iowa |
| 63 | Margaret J. Brown | 8 | Grandmother | — | Illinois |
| 64 | Anna Garrett | 73 | Head | — | Illinois |
| 65 | Arthur Garrett | 36 | Son | Operator | Illinois |
| 66 | Walter Paris | 34 | Head | Mechanic | Illinois |
| 67 | Margaret Paris | 29 | Wife | — | Illinois |
| 68 | Rose Marie Paris | 14 | Daughter | — | Illinois |
| 69 | Helen Paris | 13 | Daughter | — | Illinois |
| 70 | Joan E. Paris | 5 | Daughter | — | Illinois |
| 71 | Barbara J. Paris | 2 | Daughter | — | Illinois |
| 72 | John A. Brossell | 51 | Head | Mechanic | Sweden |
| 73 | Jennie Brossell | 57 | Wife | — | Illinois |
| 74 | Laura Brossell | 22 | Daughter | Office Worker | Illinois |
| 75 | John R. Marshall | 39 | Head | Assistant Superintendent | Illinois |
| 76 | Vivian Marshall | 37 | Wife | — | Illinois |
| 77 | Barbara J. Marshall | 9 | Daughter | — | Illinois |
| 78 | Wilson D. Fierce | 64 | Father-in-law | — | Illinois |
| 79 | Ella Mae Fierce | 61 | Mother-in-law | — | Illinois |
| 80 | Raymond Rappaport | 55 | Head | Foreman | New York |
Related Census Records
Pedigree Summary
Robert
Gen 1 · 6 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)