MS
Mary Swanson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Mary Swanson across the 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a spouse (b.~1897), then head of a 7-person household.
Age 43
b. ~1897
Female
Spouse
Born: Illinois
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Swanson |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 43 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Highest Grade | H-1 |
| 1935 Residence | Same Place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Chicago |
| Est. Birth Year | ~1897 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Marilyn Swanson | Daughter | — | 11 | ~1929 |
| Martin Swanson | Head | — | 49 | ~1891 |
| Donald Swanson | Son | — | 5 | ~1935 |
| Ralph Swanson | Son | — | 17 | ~1923 |
| Mary Swanson | Spouse | — | 43 | ~1897 |
| Clarice Swanson | Daughter | — | 18 | ~1922 |
| Willard Swanson | Son | — | 21 | ~1919 |
Census Appearances
1930
Cook, Illinois
Spouse, age 33
Cook, Illinois · implied b. ~1897 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Swanson |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 33 |
| Marital Status | Married |
| Birthplace | Illinois |
| Age at First Marriage | 19 |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Spouse, age 43
Cook-County, Illinois · implied b. ~1897 — 7 household members
| Surname | Swanson |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 43 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Highest Grade | H-1 |
| 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 Swanson across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Swanson
Spouse · 1940 · age 43 · b. ~1897 · 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 — 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-t0627-00948-00315)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Florence Edmondson | 26 | Wife | — | Illinois |
| 42 | Kenneth Edmondson | 7 | Son | — | Illinois |
| 43 | Ronald Edmondson | 4 | Son | — | Illinois |
| 44 | Ethel Mackie | 22 | Sister | Cashier | Illinois |
| 45 | Martin L. Swanson | 49 | Head | Fireman | Illinois |
| 46 | Mary Swanson THIS PERSON | 43 | Wife | — | Illinois |
| 47 | Willard Swanson | 21 | Son | Laborer | Illinois |
| 48 | Clarice Swanson | 18 | Daughter | Housemaid | Illinois |
| 49 | Ralph Swanson | 17 | Son | — | Illinois |
| 50 | Marilyn Swanson | 11 | Daughter | — | Illinois |
| 51 | Donald Swanson | 5 | Son | — | Illinois |
| 52 | Roy Mcveigh | 35 | Head | Laborer | Ohio |
| 53 | Pearl Mcveigh | 23 | Wife | — | Illinois |
| 54 | Leslie Mcveigh | 2 | Son | — | Illinois |
| 55 | John Demars | 37 | Head | Engineer | New York |
| 56 | Deborah Demars | 29 | Wife | — | Illinois |
| 57 | Dolores Demars | 11 | Daughter | — | Illinois |
| 58 | Joan Demars | 8 | Daughter | — | Illinois |
| 59 | John Demars | 6 | Son | — | Illinois |
| 60 | Rita Demars | 4 | Daughter | — | Illinois |
| 61 | Frederick Pauls | 65 | Head | — | Illinois |
| 62 | Jeremiah Barry | 42 | Head | Policeman | Ireland |
| 63 | Louis Anderson | 42 | Head | Mechanic | Norway |
| 64 | Dagny Anderson | 42 | Wife | — | Norway |
| 65 | Bernice Anderson | 18 | Daughter | Bookkeeper | Illinois |
| 66 | Loraine Anderson | 12 | Daughter | — | Illinois |
| 67 | Norman Anderson | 10 | Son | — | Illinois |
| 68 | Floyd Gourley | 32 | Head | Printer | Missouri |
| 69 | Sylvia Gourley | 29 | Wife | — | Illinois |
| 70 | Bonnie Gourley | 10 | Daughter | — | Illinois |
| 71 | Josephine Chance | 15 | Niece | — | Illinois |
| 72 | Fred Massena | 22 | Nephew | Apprentice Printer | Illinois |
| 73 | Eileen Massena | 20 | Niece | — | Illinois |
| 74 | — | None | — | — | — |
| 75 | Michael Russo | 39 | Head | Fireman | Illinois |
| 76 | Mary Russo | 36 | Wife | — | Illinois |
| 77 | Theodore Russo | 16 | Son | — | Illinois |
| 78 | Florence Russo | 14 | Daughter | — | Illinois |
| 79 | Michael Russo | 12 | Son | — | Illinois |
| 80 | Lucille Russo | 8 | Daughter | — | 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)