RM
Robert Montgomery — 1940 US Census Record
Model Tree available1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Robert Montgomery across the 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed), with identified parents Robert & Hilma — first a head (b.~1908), then head of a 3-person household.
Age 32
b. ~1908
Male
Head
Born: Illinois
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Montgomery |
| Given Name | Robert |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Cicero town |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Occupation | Shipping Clerk |
| Industry | Telephone manufacturing |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1512 |
| Highest Grade | C 1 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Shipping Clerk |
| Township / Ward | Cicero Town |
| Est. Birth Year | ~1908 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Robert | Age | Birth yr |
|---|---|---|---|---|
| Robert Montgomery | Head | — | 32 | ~1908 |
| Robert Montgomery | Son | — | 4 | ~1936 |
| Irene Montgomery | Spouse | — | 32 | ~1908 |
Census Appearances
1920
Cook, Illinois
Son, age 11
Cook, Illinois · implied b. ~1909 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Montgomery |
| Given Name | Robert |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Cook, Illinois
Son, age 21
Cook, Illinois · implied b. ~1909 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Montgomery |
| Given Name | Robert S. Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | Office Clerk |
| Industry | Public Utility Co. |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Head, age 32
Cook-County, Illinois · implied b. ~1908 — 3 household members
| Surname | Montgomery |
| Given Name | Robert |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Cicero town |
| 1935 Residence (County) | Cook |
| Occupation | Shipping Clerk |
| Industry | Telephone manufacturing |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1512 |
| Highest Grade | C 1 |
| 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 Montgomery across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Robert Montgomery (~0.92 confidence) and mother Hilma Montgomery (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Robert Montgomery
b. ~1864
Source father
● Household
· direct · ~0.92
Mother
Hilma Montgomery
b. ~1879
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Robert Montgomery
Head · 1940 · age 32 · b. ~1908 · 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 — Cook-County, Illinois
Open full size
1940 US Federal Census — Cook-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00776-00233)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Anna Brouwer | 55 | Wife | — | Holland |
| 42 | Adline Brouwer | 27 | Daughter | Office Clerk | Illinois |
| 43 | Arthur Brouwer | 19 | Son | Printer | Illinois |
| 44 | Harold Brouwer | 17 | Son | — | Illinois |
| 45 | Albert Toedter | 48 | Head | Chauffer | Illinois |
| 46 | Barba Toedter | 49 | Wife | — | Illinois |
| 47 | Beatrice Toedter | 21 | Daughter | Typist | Illinois |
| 48 | Michael Hartigan | 58 | Head | Checker | Illinois |
| 49 | Emma Hartigan | 51 | Wife | — | Michigan |
| 50 | James Hartigan | 28 | Son | Clerk | Illinois |
| 51 | Marion Hartigan | 27 | Daughter | — | Illinois |
| 52 | William Hartigan | 22 | Son | — | Illinois |
| 53 | Eileen Hartigan | 19 | Daughter | News Worker | Illinois |
| 54 | Beverly Hartigan | 17 | Daughter | — | Illinois |
| 55 | Richard Hartigan | 16 | Son | — | Illinois |
| 56 | Otto Banbaum | 34 | Head | Supervisor | Illinois |
| 57 | Jane Banbaum | 29 | Wife | — | Illinois |
| 58 | Robert Banbaum | 11 | Son | — | Illinois |
| 59 | Laureen Banbaum | 1 | Daughter | — | Illinois |
| 60 | John Chidichimo | 40 | Head | Electrician | Illinois |
| 61 | Rose Chidichimo | 34 | Wife | — | Illinois |
| 62 | Josephine Chidichimo | 10 | Daughter | — | Illinois |
| 63 | Robert Montgomery THIS PERSON | 32 | Head | Shipping Clerk | Illinois |
| 64 | Irene Montgomery | 32 | Wife | — | Illinois |
| 65 | Robert Montgomery | 4 | Son | — | Illinois |
| 66 | Anna Held | 50 | Head | — | Wisconsin |
| 67 | Arthur Held | 56 | Son | Janitor | Illinois |
| 68 | Mae Held | 44 | Daughter | Booker | Illinois |
| 69 | John Porm | 47 | Head | Sheet Metal Worker | Illinois |
| 70 | Catharine Porm | 48 | Wife | — | Illinois |
| 71 | Muriel Porm | 6 | Daughter | — | Illinois |
| 72 | Richard Porm | 1 | Son | — | Illinois |
| 73 | Edward Fricka | 34 | Head | Bookkeeper | Illinois |
| 74 | Josephine Fricka | 29 | Wife | — | Illinois |
| 75 | Donald Fricka | 2 | Son | — | Illinois |
| 76 | Fortunio Vinies | 43 | Head | Asst. Yard Foreman | Italy |
| 77 | Anna Vinies | 35 | Wife | — | Illinois |
| 78 | Marie Vinies | 8 | Daughter | — | Illinois |
| 79 | Robert Swierenga | 51 | Head | Salesman | Holland |
| 80 | Grace Swierenga | 51 | Wife | — | Illinois |
Pedigree Summary
Robert
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)