MC
Margaret Cunningham — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Margaret Cunningham across the 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a daughter (b.~1929), then head of a 8-person household.
Age 11
b. ~1929
Female
Daughter
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Cunningham |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Highest Grade | No 5 |
| 1935 Residence | Same Place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Chicago |
| Est. Birth Year | ~1929 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Margaret | Age | Birth yr |
|---|---|---|---|---|
| Ruth Seiler | Daughter | — | 15 | ~1925 |
| Nedra Seiler | Daughter | — | 18 | ~1922 |
| Margaret Cunningham | Daughter | — | 11 | ~1929 |
| Blanche Novak | Head | — | 35 | ~1905 |
| William Livingston | Son | — | 40 | ~1900 |
| Otto Novak | Son | — | 15 | ~1925 |
| Raymond Komornicki | Son | — | 10 | ~1930 |
| David Cunningham | Son | — | 14 | ~1926 |
Census Appearances
1930
Cook, Illinois
Daughter, age 1
Cook, Illinois · implied b. ~1929 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cunningham |
| Given Name | Margaret L. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Daughter, age 11
Cook-County, Illinois · implied b. ~1929 — 8 household members
| Surname | Cunningham |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Highest Grade | No 5 |
| 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 Margaret Cunningham across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Margaret Cunningham
Daughter · 1940 · age 11 · b. ~1929 · Illinois
★ You are viewing this record
Sibling
Otto Novak
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Livingston
Sibling · 1940 · age 40
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Nedra Seiler
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ruth Seiler
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
David Cunningham
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Raymond Komornicki
Sibling · 1940 · age 10
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 — 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-t0627-00965-00175)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Frank Smith | 29 | Head | Store Keeper | Michigan |
| 2 | Elizabeth B. Smith | 25 | Wife | — | Illinois |
| 3 | Edward Lafin | 17 | Son | Theater Usher | Illinois |
| 4 | Otilia Scheffer | 78 | Mother | — | Germany |
| 5 | Joe Limanowski | 37 | Lodger | Cabinet Maker | Illinois |
| 6 | Richard Matuszak | 13 | Son | — | Illinois |
| 7 | Elaine Matuszak | 6 | Daughter | — | Illinois |
| 8 | Jack A. Gorski | 35 | Head | — | Illinois |
| 9 | Lucille J. Gorski | 10 | Daughter | — | Illinois |
| 10 | Blanche Novak | 35 | Head | — | Illinois |
| 11 | Otto Novak | 15 | Son | — | Illinois |
| 12 | Nedra Seiler | 18 | Daughter | — | Illinois |
| 13 | Ruth Seiler | 15 | Daughter | — | Illinois |
| 14 | David Cunningham | 14 | Son | — | Illinois |
| 15 | Margaret Cunningham THIS PERSON | 11 | Daughter | — | Illinois |
| 16 | William Livingston | 40 | Son | Inspector - Night Clerk | Scotland |
| 17 | Raymond Komornicki | 10 | Son | — | Illinois |
| 18 | Emily Krawczyk | 29 | Head | Bookkeeper | Illinois |
| 19 | Arthur De Wig | 16 | Son | — | Illinois |
| 20 | Alice De Wig | 12 | Daughter | — | Illinois |
| 21 | Maria De Wig | 10 | Daughter | — | Illinois |
| 22 | Donald De Wig | 7 | Son | — | Illinois |
| 23 | Robert De Wig | 4 | Son | — | Illinois |
| 24 | James De Wig | 3 | Son | — | Illinois |
| 25 | Fred Albrecht | 20 | Head | Sheet Metal Apprentice | Illinois |
| 26 | Henry Albrecht | 16 | Brother | — | Illinois |
| 27 | Morris Sary | 33 | Nephew | Stock Clerk | Illinois |
| 28 | Edward A. Copicki | 32 | Son | Curator | Illinois |
| 29 | George A. Dyba | 17 | Son | — | Illinois |
| 30 | Charles W. Fox | 50 | Brother-in-law | — | Illinois |
| 31 | Marlene Michna | 6 | Daughter | — | Illinois |
| 32 | Irving Rader | 20 | Son | Shipping Clerk | Illinois |
| 33 | William Rader | 16 | Son | — | Illinois |
| 34 | Max Folkstein | 40 | Head | Owner | Massachusetts |
| 35 | Jennie Folkstein | 38 | Wife | — | Illinois |
| 36 | Ernest Folkstein | 17 | Son | — | Illinois |
| 37 | Marvin Folkstein | 10 | Son | — | Illinois |
| 38 | Lois Folkstein | 7 | Daughter | — | Illinois |
| 39 | Ruth Hogan | 31 | Lodger | Packer | Illinois |
| 40 | Audrey Hogan | 11 | Lodger | — | Illinois |
Related Census Records
Search for Margaret Cunningham
All Margaret Cunningham Census Records Discover Cunningham Family TreeAbout 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)