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Mary Becker — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Lee-County, Illinois
Our Model Tree links this Mary Becker across the 1930 and 1940 US Censuses in Lee-County, Illinois (XGBoost, ~Confirmed) — first a daughter (b.~1920), then head of a 7-person household.
Age 20
b. ~1920
Female
Daughter
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Lee-County, Illinois |
| Surname | Becker |
| Given Name | Mary M. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | May |
| 1935 Residence (County) | Lee |
| Additional Details | |
| Occupation | Servant |
| Industry | Private Family |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 520 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Servant |
| Township / Ward | May |
| 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 Mary | Age | Birth yr |
|---|---|---|---|---|
| Kathleen Becker | Daughter | — | 11 | ~1929 |
| Mary Becker | Daughter | — | 20 | ~1920 |
| Hilda Becker | Daughter | — | 17 | ~1923 |
| Frances Becker | Daughter | — | 16 | ~1924 |
| Anton Becker | Head | — | 51 | ~1889 |
| Anton Becker | Son | — | 18 | ~1922 |
| Margaret Becker | Spouse | — | 44 | ~1896 |
Census Appearances
1930
Lee, Illinois
Daughter, age 10
Lee, Illinois · implied b. ~1920 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Becker |
| Given Name | Mary M. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Lee-County, Illinois
Daughter, age 20
Lee-County, Illinois · implied b. ~1920 — 7 household members
| Surname | Becker |
| Given Name | Mary M. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | May |
| 1935 Residence (County) | Lee |
| Occupation | Servant |
| Industry | Private Family |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 520 |
| Highest Grade | No 8 |
| 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 Becker across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Becker
Daughter · 1940 · age 20 · b. ~1920 · Illinois
★ You are viewing this record
Sibling
Anton Becker
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Frances Becker
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Hilda Becker
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Kathleen Becker
Sibling · 1940 · age 11
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 — Lee-County, Illinois
Open full size
1940 US Federal Census — Lee-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00836-00771)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Justus Becker | 48 | Head | Farmer | Illinois |
| 42 | Gertrude Becker | 41 | Wife | — | Illinois |
| 43 | Melvin Becker | 19 | Son | Farm Laborer | Illinois |
| 44 | Herbert Becker | 17 | Son | Farm Laborer | Illinois |
| 45 | Charlene Becker | 12 | Daughter | — | Illinois |
| 46 | Clifford Becker | 10 | Son | — | Illinois |
| 47 | Geraldine Becker | 8 | Daughter | — | Illinois |
| 48 | Lester Schwingel | 34 | Head | Farmer | Illinois |
| 49 | Beatrice Schwingel | 34 | Wife | — | Illinois |
| 50 | Joyce Schwingel | 11 | Daughter | — | Illinois |
| 51 | Wayne Schwingel | 9 | Son | — | Illinois |
| 52 | Eugene Schwingel | 6 | Son | — | Illinois |
| 53 | Robert Schwingel | 4 | Son | — | Illinois |
| 54 | Marlene Schwingel | 3 | Daughter | — | Illinois |
| 55 | Josephine Full | 50 | Head | Farmer | Illinois |
| 56 | Ralph Full | 20 | Son | Farm Laborer | Illinois |
| 57 | Elizabeth Becker | 58 | Sister | — | Illinois |
| 58 | Clarence Becker | 44 | Cousin | Farm Laborer | Illinois |
| 59 | Harold Angier | 34 | Head | Farmer | Illinois |
| 60 | Hazel Angier | 29 | Wife | — | Illinois |
| 61 | Shirley Angier | 4 | Daughter | — | Illinois |
| 62 | Phyllis Angier | 1 | Daughter | — | Illinois |
| 63 | Francis Mullen | 79 | Head | — | Illinois |
| 64 | Mary Mullen | 70 | Cousin | — | Canada-French |
| 65 | Charles Goy | 65 | Head | Farmer | Illinois |
| 66 | Clara Goy | 68 | Wife | — | Illinois |
| 67 | Donald Harmon | 7 | Boarder Son | — | Illinois |
| 68 | Anton Becker | 51 | Head | Farmer | Illinois |
| 69 | Margaret Becker | 44 | Wife | — | Illinois |
| 70 | Mary M. Becker THIS PERSON | 20 | Daughter | Servant | Illinois |
| 71 | Anton J. Becker | 18 | Son | — | Illinois |
| 72 | Hilda Becker | 17 | Daughter | — | Illinois |
| 73 | Frances Becker | 16 | Daughter | — | Illinois |
| 74 | Kathleen Becker | 11 | Daughter | — | Illinois |
| 75 | Peter Mccullough | 79 | Head | — | Illinois |
| 76 | John Braukhoff | 48 | Head | Farmer | Illinois |
| 77 | Christine Braukhoff | 44 | Wife | — | Illinois |
| 78 | Hazel Braukhoff | 22 | Daughter | Servant | Illinois |
| 79 | Clarence Braukhoff | 16 | Son | — | Illinois |
| 80 | Wayne Braukhoff | 10 | Son | — | Illinois |
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)