MN
Mary Nash — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Mary Nash across the 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a daughter (b.~1917), then head of a 10-person household.
Age 23
b. ~1917
Female
Daughter
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Nash |
| Given Name | Mary |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Occupation | clerk |
| Industry | shoe polish manufacturer |
| Class of Worker | PW |
| Hours Worked | 3 |
| Income (1939) | 274 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Clerk |
| Township / Ward | Chicago |
| Est. Birth Year | ~1917 |
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.
10 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| George Shaughnessy | Son | — | 12 | ~1928 |
| Dolores Shaughnessy | Daughter | — | 10 | ~1930 |
| Lorraine Shaughnessy | Daughter | — | 20 | ~1920 |
| Veronica Shaughnessy | Daughter | — | 1 | ~1939 |
| Alice Shaughnessy | Spouse | — | 40 | ~1900 |
| James Shaughnessy | Son | — | 17 | ~1923 |
| Edward Shaughnessy | Son | — | 16 | ~1924 |
| Frank Shaughnessy | Head | — | 43 | ~1897 |
| Mary Nash | Daughter | — | 23 | ~1917 |
| Michael Shaughnessy | Son | — | 7 | ~1933 |
Census Appearances
1930
Cook, Illinois
Daughter, age 13
Cook, Illinois · implied b. ~1917 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Nash |
| Given Name | Marie |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Daughter, age 23
Cook-County, Illinois · implied b. ~1917 — 10 household members
| Surname | Nash |
| Given Name | Mary |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Occupation | clerk |
| Industry | shoe polish manufacturer |
| Class of Worker | PW |
| Hours Worked | 3 |
| Income (1939) | 274 |
| Highest Grade | H 4 |
| 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 Nash across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Nash
Daughter · 1940 · age 23 · b. ~1917 · Illinois
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Sibling
Michael Shaughnessy
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Shaughnessy
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
George Shaughnessy
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edward Shaughnessy
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Veronica Shaughnessy
Sibling · 1940 · age 1
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lorraine Shaughnessy
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dolores Shaughnessy
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-t0627-00949-00781)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Thomas Hanley | 47 | Head | Conductor | Illinois |
| 2 | Anne Hanley | 40 | Wife | — | Illinois |
| 3 | Dorothy Hanley | 5 | daughter | — | Illinois |
| 4 | Ruth Hanley | 3 | daughter | — | Illinois |
| 5 | Marie Hanley | 1 | daughter | — | Illinois |
| 6 | Frank Gatens | 28 | Head | Bartender | Greece |
| 7 | Verona Gatens | 30 | Wife | — | Illinois |
| 8 | Donna Gatens | 8 | daughter | — | Illinois |
| 9 | Ida Ash | 67 | mother-in-law | — | Illinois |
| 10 | Frank Shaughnessy | 43 | Head | Yard Man | Illinois |
| 11 | Alice Shaughnessy | 40 | Wife | — | Illinois |
| 12 | Lorraine Shaughnessy | 20 | daughter | Packer | Illinois |
| 13 | James Shaughnessy | 17 | son | Messenger | Illinois |
| 14 | Edward Shaughnessy | 16 | son | — | Illinois |
| 15 | George Shaughnessy | 12 | son | — | Illinois |
| 16 | Dolores Shaughnessy | 10 | daughter | — | Illinois |
| 17 | Michael Shaughnessy | 7 | son | — | Illinois |
| 18 | Veronica Shaughnessy | 1 | daughter | — | Illinois |
| 19 | Mary Nash THIS PERSON | 23 | daughter | Clerk | Illinois |
| 20 | James Vaccarello | 50 | Head | Laborer | Italy |
| 21 | Catherine Vaccarello | 40 | Wife | — | Louisiana |
| 22 | Catherine Vaccarello | 20 | daughter | Beautician | Illinois |
| 23 | John Vaccarello | 10 | son | — | Illinois |
| 24 | Harold Parnau | 31 | Head | Laborer | Illinois |
| 25 | Alice Parnau | 29 | Wife | — | Illinois |
| 26 | Shirley Parnau | 9 | daughter | — | Illinois |
| 27 | Lorraine Parnau | 8 | daughter | — | Illinois |
| 28 | Richard Parnau | 1 | son | — | Illinois |
| 29 | Lena Parnau | 55 | mother | Housekeeper | Illinois |
| 30 | Phillip O'Connell | 45 | Head | Watchman | Illinois |
| 31 | Louise O'Connell | 37 | Wife | — | Illinois |
| 32 | Phyllis O'Connell | 13 | daughter | — | Illinois |
| 33 | Robert O'Connell | 11 | son | — | Illinois |
| 34 | Catherine O'Connell | 1 | daughter | — | Illinois |
| 35 | Arthur Sheldon | 54 | Head | Laborer | Missouri |
| 36 | Grace Sheldon | 42 | Wife | — | Illinois |
| 37 | Agnes Clarke | 58 | Head | Housekeeper | Irish Free State |
| 38 | John Stee | 54 | Head | Janitor | Poland |
| 39 | Helen Stee | 45 | Wife | — | Poland |
| 40 | Walter Stee | 25 | son | Receiving Clerk | 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)