MF
Mary Farrell — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Madison-County, Illinois
Our Model Tree links this Mary Farrell across the 1920, 1930 and 1940 US Censuses in Madison-County, Illinois (XGBoost, ~Confirmed) — first a head (b.~1880), then head of a 3-person household.
Age 60
b. ~1880
Female
Head
Born: Illinois
Widowed
1940 Census Record Details
| Census Year | 1940 |
| Location | Madison-County, Illinois |
| Surname | Farrell |
| Given Name | Mary C. |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 60 |
| Marital Status | Widowed |
| Birthplace | Illinois |
| 1935 Residence (City) | Leef Twp |
| 1935 Residence (County) | Madison |
| Additional Details | |
| Occupation | laborer |
| Industry | farm |
| Class of Worker | OA |
| Hours Worked | 48 |
| Income (1939) | 20 |
| Highest Grade | No 8 |
| 1935 Residence | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Laborer |
| Township / Ward | Leef Twp |
| Est. Birth Year | ~1880 |
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 Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Farrell | Head | — | 60 | ~1880 |
| Mary Farrell | Other | — | 20 | ~1920 |
| Frances Farrell | Son | — | 29 | ~1911 |
Census Appearances
1920
Madison, Illinois
Spouse, age 38
Madison, Illinois · implied b. ~1882 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Farrell |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 38 |
| Marital Status | Married |
| Birthplace | Illinois |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Illinois |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Madison, Illinois
Head, age 49
Madison, Illinois · implied b. ~1881 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Farrell |
| Given Name | Mary C |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 49 |
| Marital Status | Married |
| Birthplace | Illinois |
| Age at First Marriage | 27 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Illinois |
| Occupation | Farmer |
| Industry | Gen. Farm |
| Class of Worker | O |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Radio Set | R |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Madison-County, Illinois
Head, age 60
Madison-County, Illinois · implied b. ~1880 — 3 household members
| Surname | Farrell |
| Given Name | Mary C. |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 60 |
| Marital Status | Widowed |
| Birthplace | Illinois |
| 1935 Residence (City) | Leef Twp |
| 1935 Residence (County) | Madison |
| Occupation | laborer |
| Industry | farm |
| Class of Worker | OA |
| Hours Worked | 48 |
| Income (1939) | 20 |
| Highest Grade | No 8 |
| 1935 Residence | Illinois |
| 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 Farrell across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Farrell
Head · 1940 · age 60 · b. ~1880 · Illinois
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Madison-County, Illinois
Open full size
1940 US Federal Census — Madison-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00850-00795)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Mary C. Farrell THIS PERSON | 60 | Head | Laborer | Illinois |
| 2 | Frances I. Farrell | 29 | Son | Laborer | Illinois |
| 3 | Mary Patricia Farrell | 20 | Dau. | — | Illinois |
| 4 | Willis G. Beam | 73 | Head | — | Illinois |
| 5 | Laura E. Beam | 67 | Wife | — | Illinois |
| 6 | Mary E. Beam | 43 | Dau. | — | Illinois |
| 7 | Dewey J. Henschen | 41 | Head | Laborer | Illinois |
| 8 | Alma E. Henschen | 42 | Wife | Laborer | Illinois |
| 9 | Alenell M. Henschen | 12 | Son | — | Illinois |
| 10 | Udell D. Henschen | 8 | Son | — | Illinois |
| 11 | Robert D. Henschen | 6 | Son | — | Illinois |
| 12 | Henry Bertel | 64 | Hired hand | Laborer | Illinois |
| 13 | Irwin H. Talleur | 31 | Head | Laborer | Illinois |
| 14 | Dorothy J. Talleur | 30 | Wife | Laborer | Illinois |
| 15 | Betty J. Talleur | 9 | Dau. | — | Illinois |
| 16 | Jean Marie Talleur | 7 | Dau. | — | Illinois |
| 17 | Richard I. Talleur | 3 | Son | — | Illinois |
| 18 | Dorothy M. Talleur | 1 | Dau. | — | Illinois |
| 19 | Adolph Lang | 56 | Head | Laborer | Illinois |
| 20 | Lena E. Lang | 51 | Wife | Laborer | Illinois |
| 21 | Thelma B. Lang | 19 | Dau. | Laborer | Illinois |
| 22 | Clifford J. Pompey | 26 | Hired hand | Laborer | Illinois |
| 23 | Fred L. Henschen | 63 | Head | Laborer | Illinois |
| 24 | Bertha C. Henschen | 61 | Wife | Laborer | Illinois |
| 25 | John F. Henschen | 34 | Son | Laborer | Illinois |
| 26 | Wilbert H. Henschen | 28 | Son | Laborer | Illinois |
| 27 | Eldern J. Henschen | 25 | Son | Laborer | Illinois |
| 28 | Adelia V. Henschen | 23 | Dau. | Teacher | Illinois |
| 29 | Ravel P. Henschen | 17 | Son | Laborer | Illinois |
| 30 | Ed Jr. Henschen | 39 | Head | Laborer | Illinois |
| 31 | Mamie T. M. Henschen | 32 | Wife | Laborer | Illinois |
| 32 | Laverne C. Henschen | 12 | Son | — | Illinois |
| 33 | Maxine M. Henschen | 2 | Dau. | — | Illinois |
| 34 | Albert H. Nees | 50 | Head | — | Illinois |
| 35 | Emma T. Nees | 42 | Wife | Laborer | Illinois |
| 36 | Charles O. Nees | 9 | Son | — | Illinois |
| 37 | Audrey M. Nees | 6 | Dau. | — | Illinois |
| 38 | Julius F. Nees | 54 | Son | Laborer | Illinois |
| 39 | Julia A. Zeller | 48 | Head | Laborer | Illinois |
| 40 | Lester R. Zeller | 20 | Son | Laborer | 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)