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Mary Mccarthy — 1940 US Census Record
Model Tree available1940 United States Federal Census · Sangamon-County, Illinois
Our Model Tree links this Mary Mccarthy across the 1920, 1930 and 1940 US Censuses in Sangamon-County, Illinois (XGBoost, ~Confirmed), with identified parents Cornelius & Mary — first a daughter (b.~1914), then head of a 3-person household.
Age 26
b. ~1914
Female
Daughter
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Sangamon-County, Illinois |
| Surname | McCarthy |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Springfield City |
| 1935 Residence (County) | Sangamon |
| Additional Details | |
| Occupation | Coil taper |
| Industry | Meter Works |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 450 |
| Highest Grade | H 4 |
| 1935 Residence | Same House |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Coil Taper |
| Township / Ward | Springfield City |
| Est. Birth Year | ~1914 |
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 Mccarthy | Daughter | — | 26 | ~1914 |
| Cornelius Mccarthy | Head | — | 53 | ~1887 |
| Mary Mccarthy | Spouse | — | 50 | ~1890 |
Census Appearances
1920
Sangamon, Illinois
Daughter, age 5
Sangamon, Illinois · implied b. ~1915 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McCarthy |
| Given Name | Mary E |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | none |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Sangamon, Illinois
Daughter, age 16
Sangamon, Illinois · implied b. ~1914 — 50 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McCarthy |
| Given Name | Mary |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 16 |
| 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
Sangamon-County, Illinois
Daughter, age 26
Sangamon-County, Illinois · implied b. ~1914 — 3 household members
| Surname | McCarthy |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Springfield City |
| 1935 Residence (County) | Sangamon |
| Occupation | Coil taper |
| Industry | Meter Works |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 450 |
| Highest Grade | H 4 |
| 1935 Residence | Same House |
| 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 Mccarthy across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Cornelius Mccarthy (~0.92 confidence) and mother Mary Mccarthy (~0.92 confidence) and mother Mary Mccarthy (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Cornelius Mccarthy
b. ~1887
Source father
● Household
· direct · ~0.92
Mother
Mary Mccarthy
b. ~1890
Source mother
● Household
· direct · ~0.92
Mother
Mary Mccarthy
b. ~1891
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Mccarthy
Daughter · 1940 · age 26 · b. ~1914 · 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 — Sangamon-County, Illinois
Open full size
1940 US Federal Census — Sangamon-County, Illinois
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-00885-00702)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Rosemary Simons | 16 | Daughter | — | Illinois |
| 42 | Lorraine Simons | 14 | Daughter | — | Illinois |
| 43 | William Fromm | 70 | Head | — | Germany |
| 44 | Henrietta Fromm | 70 | Wife | — | Germany |
| 45 | Joseph Wangard | 43 | Head | Painter | Germany |
| 46 | Bertha Wehrle | 63 | Head | — | Germany |
| 47 | John Schmid | 54 | Brother | Bartender | Germany |
| 48 | Martin Schmid | 48 | Brother | Bartender | Illinois |
| 49 | Theodore Moeller | 37 | Head | Foreman | Germany |
| 50 | Marie Moeller | 39 | Wife | — | Germany |
| 51 | Elsie Marie Moeller | 14 | Daughter | — | Illinois |
| 52 | Theodore Jr. Moeller | 10 | Son | — | Illinois |
| 53 | William J. Ehrig | 55 | Head | Bus Driver | Illinois |
| 54 | Letha Ehrig | 43 | Wife | — | Illinois |
| 55 | John E. Fox | 54 | Head | Laborer | Illinois |
| 56 | Minerva Fox | 53 | Wife | — | Missouri |
| 57 | Rose Shepard | 26 | Head | Warehouse Man | Illinois |
| 58 | Edna Shepard | 22 | Wife | — | Illinois |
| 59 | Shirley Shepard | 3 | Daughter | — | Illinois |
| 60 | Robert Shepard | 2 | Son | — | Illinois |
| 61 | Daniel La Brier | 31 | Head | Embalmers Assistant | Illinois |
| 62 | Frances La Brier | 31 | Wife | — | Illinois |
| 63 | Carol La Brier | 5 | Daughter | — | Illinois |
| 64 | Mary La Brier | 1 | Daughter | — | Illinois |
| 65 | Joseph Mccormick | 29 | Brother-in-law | Mechanic | Illinois |
| 66 | Fred Hughes | 62 | Head | Carpenter | Illinois |
| 67 | Mary Hughes | 46 | Wife | — | Illinois |
| 68 | Lloyd Hughes | 12 | Son | — | Illinois |
| 69 | Floyd Hughes | 10 | Son | — | Illinois |
| 70 | Edwin Ehlert | 28 | Head | Truck Driver | Illinois |
| 71 | Evelyn Ehlert | 36 | Wife | Laundress | Illinois |
| 72 | Joseph Wienhoff | 30 | Head | Iron Worker | Illinois |
| 73 | Gladys Wienhoff | 26 | Wife | — | Illinois |
| 74 | Joseph Jr. Wienhoff | 6 | Son | — | Illinois |
| 75 | Richard Wienhoff | 5 | Son | — | Illinois |
| 76 | James Wienhoff | 2 | Son | — | Illinois |
| 77 | Cornelius Mccarthy | 53 | Head | Coal Miner | Illinois |
| 78 | Mary Mccarthy | 50 | Wife | — | Illinois |
| 79 | Mary Mccarthy THIS PERSON | 26 | Daughter | Coil Taper | Illinois |
Pedigree Summary
Mary
Gen 1 · 3 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)