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Mary Berger — 1940 US Census Record
Model Tree available1940 United States Federal Census · Rock-Island-County, Illinois
Our Model Tree links this Mary Berger across the 1920, 1930 and 1940 US Censuses in Rock-Island-County, Illinois (XGBoost, ~Confirmed), with identified parents Robert & Robert — first a daughter (b.~1915), then head of a 6-person household.
Age 25
b. ~1915
Female
Daughter
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Rock-Island-County, Illinois |
| Surname | Berger |
| Given Name | Mary E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | East Moline City |
| 1935 Residence (County) | Rock Island |
| Additional Details | |
| Occupation | Stenographer |
| Industry | Produce Parole Office |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1108 |
| Highest Grade | C 2 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Stenographer |
| Township / Ward | East Moline City |
| Est. Birth Year | ~1915 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Margery Berger | Daughter | — | 14 | ~1926 |
| Louis Berger | Son | — | 21 | ~1919 |
| Mary Berger | Daughter | — | 25 | ~1915 |
| Robert Berger | Son | — | 29 | ~1911 |
| Elizabeth Berger | Spouse | — | 53 | ~1887 |
| Robert Berger | Head | — | 54 | ~1886 |
Census Appearances
1920
Rock Island, …
Daughter, age 4
Rock Island, Illinois · implied b. ~1916 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Berger |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Rock Island, …
Daughter, age 15
Rock Island, Illinois · implied b. ~1915 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Berger |
| Given Name | Mary E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Rock-Island-County, Illinois
Daughter, age 25
Rock-Island-County, Illinois · implied b. ~1915 — 6 household members
| Surname | Berger |
| Given Name | Mary E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | East Moline City |
| 1935 Residence (County) | Rock Island |
| Occupation | Stenographer |
| Industry | Produce Parole Office |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1108 |
| 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 Mary Berger across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Robert Berger (~0.92 confidence) and father Robert Berger (~0.92 confidence) and father Robert Berger (~0.92 confidence) and mother Elizabeth Berger (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Robert Berger
b. ~1886
Source father
● Household
· direct · ~0.92
Father
Robert Berger
b. ~1876
Source father
● Household
· direct · ~0.92
Father
Robert Berger
b. ~1880
Source father
● Household
· direct · ~0.92
Mother
Elizabeth Berger
b. ~1887
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Berger
Daughter · 1940 · age 25 · b. ~1915 · Illinois
★ You are viewing this record
Sibling
Louis Berger
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Berger
Sibling · 1940 · age 29
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margery Berger
Sibling · 1940 · age 14
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 — Rock-Island-County, Illinois
Open full size
1940 US Federal Census — Rock-Island-County, Illinois
Page Contents
37 people indexed on this census page (nara:1940:m-t0627-00874-00371)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Vivian Best | 28 | Daughter | Secretary | Illinois |
| 42 | Ronald Best | 16 | Son | — | Illinois |
| 43 | Henry L. Mammen | 35 | Lodger | Shipping Clerk | Illinois |
| 44 | John W. Wacker | 25 | Lodger | Inspector | Minnesota |
| 45 | Robert E. Berry | 30 | Head | Truck Driver | Illinois |
| 46 | Vera Berry | 29 | Wife | — | Illinois |
| 47 | William E. Berry | 8 | Son | — | Illinois |
| 48 | Mahlon Ingersoll | 68 | Head | Painter Paperhanger | Iowa |
| 49 | Sena Ingersoll | 66 | Wife | — | Iowa |
| 50 | Anne Harrison | 36 | Niece | Practical Nurse | Ohio |
| 51 | Paul Frank | 36 | Head | Assistant Teacher | Illinois |
| 52 | Helen Frank | 36 | Wife | — | Illinois |
| 53 | Edward A. Stewart | 40 | Head | Druggist | Illinois |
| 54 | Agnes Stewart | 42 | Wife | — | Illinois |
| 55 | Glenn Shackley | 42 | Lodger | Crater Packer | Indiana |
| 56 | Mike Kapantas | 54 | Head | Foundryman | Greece |
| 57 | Petra Kapantas | 44 | Wife | — | Greece |
| 58 | Georgia Kapantas | 24 | Daughter | Clerk | Illinois |
| 59 | Christopher Kapantas | 12 | Son | — | Illinois |
| 60 | Gustave Muzos | 44 | Head | Foundryman | Greece |
| 61 | Mystle Muzos | 47 | Wife | — | Texas |
| 62 | Ralph N. Muzos | 18 | Son | Asst. Manager | Illinois |
| 63 | Dorotha Muzos | 16 | Daughter | — | Illinois |
| 64 | Jo Ann Muzos | 6 | Daughter | — | Illinois |
| 65 | George Demont | None | Lodger | — | — |
| 66 | William Stanley | None | Lodger | — | — |
| 67 | David Lines | None | Lodger | — | — |
| 71 | Gustave Suhas | 57 | Head | Laborer | Greece |
| 72 | Beatrice Suhas | 40 | Wife | — | Greece |
| 73 | Steve Suhas | 18 | Son | — | Illinois |
| 74 | Peter Suhas | 17 | Son | Clerk | Illinois |
| 75 | Robert Berger | 54 | Head | Manager | Illinois |
| 76 | Elizabeth Berger | 53 | Wife | Bookkeeper | Illinois |
| 77 | Robert Earle Berger | 29 | Son | Owner | Illinois |
| 78 | Mary E. Berger THIS PERSON | 25 | Daughter | Stenographer | Illinois |
| 79 | Louis Duane Berger | 21 | Son | Deliveryman | Illinois |
| 80 | Margery Linn Berger | 14 | Daughter | — | Illinois |
Pedigree Summary
Mary + 3 siblings
Gen 1 · 4 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)