MP
Mary Porter — 1940 US Census Record
Model Tree available1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Mary Porter across the 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed), with identified parents George & Hannah — first a spouse (b.~1909), then head of a 6-person household.
Age 31
b. ~1909
Female
Spouse
Born: Illinois
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Porter |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Industry | H 5 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Chicago City |
| Est. Birth Year | ~1909 |
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 |
|---|---|---|---|---|
| Patricia Porter | Daughter | — | 4 | ~1936 |
| Maryellen Porter | Daughter | — | 2 | ~1938 |
| Robert Porter | Head | — | 36 | ~1904 |
| Charles Porter | Son | — | 10 | ~1930 |
| Ronald Porter | Son | — | 7 | ~1933 |
| Mary Porter | Spouse | — | 31 | ~1909 |
Census Appearances
1920
Cook, Illinois
Daughter, age 10
Cook, Illinois · implied b. ~1910 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Porter |
| Given Name | Mary E. |
| 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 | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Cook, Illinois
Daughter, age 21
Cook, Illinois · implied b. ~1909 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Porter |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | Stenographer |
| Industry | Film Company |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Spouse, age 31
Cook-County, Illinois · implied b. ~1909 — 6 household members
| Surname | Porter |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Industry | H 5 |
| 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 Porter across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father George Porter (~0.92 confidence) and mother Hannah Porter (~0.92 confidence) and father George Porter (~0.92 confidence) and mother Mary Porter (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
George Porter
b. ~1875
Source father
● Household
· direct · ~0.92
Mother
Hannah Porter
b. ~1881
Source mother
● Household
· direct · ~0.92
Father
George Porter
b. ~1884
Source father
● Household
· direct · ~0.92
Mother
Mary Porter
b. ~1885
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Porter
Spouse · 1940 · age 31 · b. ~1909 · 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
38 people indexed on this census page (nara:1940:m-t0627-00947-00599)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | George Hall | 34 | Head | Commissary | Illinois |
| 2 | Claude Hall | 34 | Daughter-in-law | — | Illinois |
| 3 | Ruth Hall | 20 | Granddaughter | — | Illinois |
| 4 | Robert J. Hall | 6 | Grandson | — | Illinois |
| 5 | Philip Gusic | 43 | Head | Factory Worker | Dalmatia |
| 6 | Charl Minasian | 24 | Head | Butcher | Turkey-Armenia |
| 7 | Martha Minasian | 23 | Wife | — | Turkey-Armenia |
| 8 | Zarouhi Minasian | 4 | Daughter | — | Illinois |
| 9 | Trikor Minasian | 2 | Son | — | Illinois |
| 10 | Essa Minasian | 66 | Mother | — | Turkey-Armenia |
| 11 | Karalin Damirgoehian | 29 | Lodger | Shoemaker | Turkey-Armenia |
| 12 | William H Goldenberg | 35 | Head | Trouble-Man | Illinois |
| 13 | Louise R Goldenberg | 35 | Wife | — | Illinois |
| 14 | Louise Goldenberg | 11 | Daughter | — | Illinois |
| 15 | Joyce Goldenberg | 9 | Daughter | — | Illinois |
| 16 | William Goldenberg | 2 | Son | — | Illinois |
| 17 | George R. Williams | 36 | Head | Officer Of Police | Illinois |
| 18 | Marie Williams | 34 | Wife | — | Illinois |
| 19 | Jeanine Williams | 10 | Daughter | — | Illinois |
| 20 | Marilyn Williams | 7 | Daughter | — | Illinois |
| 21 | Robert Porter | 36 | Head | Truck Driver | Illinois |
| 22 | Mary Porter THIS PERSON | 31 | Wife | — | Illinois |
| 23 | Charles Porter | 10 | Son | — | Illinois |
| 24 | Ronald Porter | 7 | Son | — | Illinois |
| 25 | Patricia Porter | 4 | Daughter | — | Illinois |
| 26 | Maryellen Porter | 2 | Daughter | — | Illinois |
| 27 | Frank W Reed | 41 | Head | Platten | Illinois |
| 28 | Mary E. Reed | 42 | Wife | — | Illinois |
| 29 | Frank E Reed | 17 | Son | — | Illinois |
| 30 | Irene L Reed | 14 | Daughter | — | Illinois |
| 31 | Dorothy Reed | 11 | Daughter | — | Illinois |
| 32 | Patrick Moylan | 88 | Head | — | Ireland |
| 33 | Grace R Moylan | 34 | Wife | — | New Jersey |
| 34 | Mary J Moylan | 55 | Daughter | Telephone Operator | Illinois |
| 35 | John S. Jablonowski | 66 | Head | Electrician | Illinois |
| 36 | Mary Jablonowski | 61 | Wife | — | Illinois |
| 37 | Leonard Jablonowski | 19 | Son | New Worker | Illinois |
| 38 | Harold Schmidtke | 26 | Head | Machinist Hand | Illinois |
Pedigree Summary
Mary
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)