MF
Mary Fisher — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Mary Fisher across the 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a spouse (b.~1883), then head of a 3-person household.
Age 57
b. ~1883
Female
Spouse
Born: Scotland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Fisher |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 57 |
| Marital Status | Married |
| Birthplace | Scotland |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Naturalization Status | Naturalized |
| Additional Details | |
| Class of Worker | 0 |
| Highest Grade | H 8 |
| 1935 Residence | Same House |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
| Township / Ward | Chicago |
| Est. Birth Year | ~1883 |
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 |
|---|---|---|---|---|
| George Fisher | Head | — | 58 | ~1882 |
| George Fisher | Son | — | 22 | ~1918 |
| Mary Fisher | Spouse | — | 57 | ~1883 |
Census Appearances
1920
Cook, Illinois
Spouse, age 36
Cook, Illinois · implied b. ~1884 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Fisher |
| Given Name | Mary |
| Relationship to Head | wife |
| Sex | F |
| Color / Race | White |
| Age | 36 |
| Marital Status | Married |
| Birthplace | Scotland |
| Year of Immigration | 1914 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
1930
Cook, Illinois
Spouse, age 47
Cook, Illinois · implied b. ~1883 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Fisher |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 47 |
| Marital Status | Married |
| Birthplace | Scotland |
| Naturalization Status | Naturalized |
| Year of Immigration | 1913 |
| Age at First Marriage | 32 |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
1940
Cook-County, Illinois
Spouse, age 57
Cook-County, Illinois · implied b. ~1883 — 3 household members
| Surname | Fisher |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 57 |
| Marital Status | Married |
| Birthplace | Scotland |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Naturalization Status | Naturalized |
| Class of Worker | 0 |
| Highest Grade | H 8 |
| 1935 Residence | Same House |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
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 Fisher across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Fisher
Spouse · 1940 · age 57 · b. ~1883 · 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-t0627-00982-00315)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Anna Smith | 25 | Wife | Assembler | Pennsylvania |
| 42 | Neil B Smith | 5 | Son | — | Illinois |
| 43 | Lorna B Smith | 3 | Girl | — | Illinois |
| 44 | Clyde Tuttle | 20 | Cousin | Assembler | Illinois |
| 45 | Frank J O'Brien | 49 | Head | Chauffeur | Eire |
| 46 | Ella O'Brien | 43 | Wife | — | Eire |
| 47 | Jack O'Brien | 23 | Son | Engraver | Illinois |
| 48 | Mary T O'Brien | 21 | Daughter | Operator | Illinois |
| 49 | Frank J O'Brien | 19 | Son | — | Illinois |
| 50 | Margaret O'Brien | 14 | Daughter | — | Illinois |
| 51 | Jean M O'Brien | 11 | Daughter | — | Illinois |
| 52 | Anna Mae O'Brien | 10 | Daughter | — | Illinois |
| 53 | Raymond O'Brien | 8 | Son | — | Illinois |
| 54 | Henry Rademacher | 49 | Head | Laborer | Germany |
| 55 | John H Rademacher | 82 | Father | — | Germany |
| 56 | Lillian Chiropolous | 43 | Head | — | Greece |
| 57 | James Chiropolous | 21 | Son | Painter | Illinois |
| 58 | Nicholas Chiropolous | 19 | Son | — | Illinois |
| 59 | William Chiropolous | 16 | Son | — | Illinois |
| 60 | Tina Chiropolous | 14 | Daughter | — | Illinois |
| 61 | Mike Chiropolous | 11 | Son | — | Illinois |
| 62 | John Chiropolous | 9 | Son | — | Illinois |
| 63 | Dorothy A Chiropolous | 8 | Daughter | — | Illinois |
| 64 | George W Fisher | 58 | Head | Operator | Scotland |
| 65 | Mary Fisher THIS PERSON | 57 | Wife | — | Scotland |
| 66 | George Fisher | 22 | Son | Duplicating Enginder | Illinois |
| 67 | William J Mcgaw | 72 | Head | — | Ohio |
| 68 | Mary H Mcgaw | 67 | Wife | — | Indiana |
| 69 | William J Mcgaw | 37 | Son | Electrical Maintenance | Illinois |
| 70 | Genevieve Mcgaw | 32 | Daughter in Law | — | Illinois |
| 71 | William Mcgaw | 13 | Son | — | Illinois |
| 72 | Clare C Hartman | 36 | Head | Adjuster | Illinois |
| 73 | Gertrude Hartman | 38 | Wife | Secretary | Illinois |
| 74 | John T Lyons | 39 | Head | Train Caller | Irish Free State |
| 75 | Margaret J Lyons | 38 | Wife | — | Irish Free State |
| 76 | John J Lyons | 2 | Son | — | Illinois |
| 77 | Margaret M Lyons | 5 | Daughter | — | Illinois |
| 78 | Norah Mcwrath | 38 | Sister in Law | Waitress | Irish Free State |
| 79 | Tosi Antony | 38 | Head | Laborer | Italy |
| 80 | Tosi Antony | 36 | Wife | — | Italy |
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)