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.~1866), then head of a 8-person household.
Age 74
b. ~1866
Female
Spouse
Born: Sweden
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 | 74 |
| Marital Status | Married |
| Birthplace | Sweden |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Naturalization Status | Naturalized |
| Additional Details | |
| Class of Worker | 0 |
| Highest Grade | 8 |
| 1935 Residence | Same Place |
| Birth Country | Sweden |
| Birthplace (normalized) | sweden |
| Township / Ward | Chicago |
| Est. Birth Year | ~1866 |
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 Mary | Age | Birth yr |
|---|---|---|---|---|
| August Swanson | Head | — | 68 | ~1872 |
| Hattie Swanson | Other | — | 38 | ~1902 |
| Arthur Swanson | Son | — | 43 | ~1897 |
| Walter Swanson | Son | — | 8 | ~1932 |
| Winifred Swanson | Daughter | — | 14 | ~1926 |
| Mary Swanson | Spouse | — | 74 | ~1866 |
| Arthur Swanson | Son | — | 10 | ~1930 |
| Charles Swanson | Son | — | 18 | ~1922 |
Census Appearances
1930
Cook, Illinois
Other, age 61
Cook, Illinois · implied b. ~1869 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Swanson |
| Given Name | Mary |
| Relationship to Head | Wife-H |
| Sex | F |
| Color / Race | White |
| Age | 61 |
| Marital Status | Married |
| Birthplace | Sweden |
| Naturalization Status | Naturalized |
| Year of Immigration | 1889 |
| Age at First Marriage | 29 |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Can Read/Write | Yes |
| Mother Tongue | Swedish |
| Birth Country | Sweden |
| Birthplace (normalized) | sweden |
1940
Cook-County, Illinois
Spouse, age 74
Cook-County, Illinois · implied b. ~1866 — 8 household members
| Surname | Swanson |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 74 |
| Marital Status | Married |
| Birthplace | Sweden |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Naturalization Status | Naturalized |
| Class of Worker | 0 |
| Highest Grade | 8 |
| 1935 Residence | Same Place |
| Birth Country | Sweden |
| Birthplace (normalized) | sweden |
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.
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This person
Anchor record
Mary Swanson
Spouse · 1940 · age 74 · b. ~1866 · 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-t0627-00981-00535)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Ethel Johnson | 29 | Wife | Manager | Norway |
| 2 | Lenne B. Arbeen | 40 | Head | Clerk | Illinois |
| 3 | Anne C. Arbeen | 41 | Wife | — | Illinois |
| 4 | Bernard C. Arbeen | 14 | Son | — | Illinois |
| 5 | Lynn A. Arbeen | 9 | Son | — | Illinois |
| 6 | Leo P. Schneider | 56 | Head | Checker | Illinois |
| 7 | Anna Schneider | 67 | Wife | — | Wisconsin |
| 8 | Charles Niederkorn | 78 | Head | Janitor | Nebraska |
| 9 | Irene Niederkorn | 24 | Wife | — | Missouri |
| 10 | Rosemarie Niederkorn | 5 | Daughter | — | Missouri |
| 11 | Shirley Ann Niederkorn | 1 | Daughter | — | Illinois |
| 12 | Casper E. Hagland | 66 | Head | — | Norway |
| 13 | Laura Hagland | 58 | Wife | — | Norway |
| 14 | Vinnie Larsen | 60 | Sister in law | Housekeeper | Norway |
| 15 | Gustave A. Lundin | 70 | Head | — | Sweden |
| 16 | Tilda M. Lundin | 63 | Wife | — | Sweden |
| 17 | Kate Mcfarland | 81 | Head | — | Pennsylvania |
| 18 | William Shaw | 64 | Head | Newspaper Mailer | Scotland |
| 19 | Elizabeth Shaw | 64 | Wife | — | Scotland |
| 20 | Charles J. Sullivan | 62 | Head | Cigar Maker | Kentucky |
| 21 | Marguerite Sullivan | 63 | Wife | — | Norway |
| 22 | Ella L. Thomas | 57 | Niece | School Clerk | Kentucky |
| 23 | William Hobson | 40 | Head | Elevator Operator | Scotland |
| 24 | Annie Hobson | 38 | Wife | Sales Woman | Scotland |
| 25 | George Hobson | 12 | Son | — | Illinois |
| 26 | William J. Logan | 43 | Head | Guard | Washington |
| 27 | Mary Logan | 44 | Wife | — | Illinois |
| 28 | Patricia Logan | 9 | Daughter | — | Illinois |
| 29 | Andrew Yochem | 42 | Head | Shipping Clerk | Illinois |
| 30 | Anna Yochem | 42 | Wife | — | Germany |
| 31 | Carl Yochem | 10 | Son | — | Illinois |
| 32 | August Swanson | 68 | Head | — | Sweden |
| 33 | Mary Swanson THIS PERSON | 74 | Wife | — | Sweden |
| 34 | Arthur J. Swanson | 43 | Son | Switchman | Illinois |
| 35 | Hattie Swanson | 38 | Daughter in law | — | Illinois |
| 36 | Charles A. Swanson | 18 | Son | News Vendor | Illinois |
| 37 | Winifred Swanson | 14 | Daughter | — | Illinois |
| 38 | Arthur Jr. Swanson | 10 | Son | — | Illinois |
| 39 | Walter J. Swanson | 8 | Son | — | Illinois |
| 40 | James Flanagan | 43 | Head | Motorman | Eire |
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)