MN
Mary Nolan — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Mary Nolan across the 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a head (b.~1880), then head of a 2-person household.
Age 60
b. ~1880
Female
Head
Born: Ireland
Widowed
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Nolan |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 60 |
| Marital Status | Widowed |
| Birthplace | Ireland |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Naturalization Status | Naturalized |
| Additional Details | |
| Highest Grade | No 8 |
| 1935 Residence | Same House |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
| Township / Ward | Chicago |
| Est. Birth Year | ~1880 |
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.
2 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Nolan | Head | — | 60 | ~1880 |
| Gerald Nolan | Son | — | 26 | ~1914 |
Census Appearances
Head, age 33
Cook, Illinois · implied b. ~1887 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Nolan |
| Given Name | Margaret |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 33 |
| Marital Status | Widowed |
| Birthplace | Ireland |
| Year of Immigration | 1903 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | House Work |
| Industry | Home Work |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Irish |
| Home Owned/Rented | R |
| Birth Country | Ireland |
| Year of Naturalization | 1916 |
| Birthplace (normalized) | ireland |
1930
Cook, Illinois
Other, age 46
Cook, Illinois · implied b. ~1884 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Nolan |
| Given Name | Margaret |
| Relationship to Head | Mother-in-law |
| Sex | F |
| Color / Race | White |
| Age | 46 |
| Marital Status | Widowed |
| Birthplace | Ireland |
| Naturalization Status | Naturalized |
| Year of Immigration | 1900 |
| Age at First Marriage | 22 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Housekeeper |
| Industry | Private Family |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | Irish |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1940
Cook-County, Illinois
Head, age 60
Cook-County, Illinois · implied b. ~1880 — 2 household members
| Surname | Nolan |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 60 |
| Marital Status | Widowed |
| Birthplace | Ireland |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Naturalization Status | Naturalized |
| Highest Grade | No 8 |
| 1935 Residence | Same House |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
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 Nolan across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Nolan
Head · 1940 · age 60 · b. ~1880 · 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
40 people indexed on this census page (nara:1940:m-t0627-00980-00094)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Catherine Hayes | 28 | Daughter | Office Clerk | Illinois |
| 2 | William P Hayes | 22 | Son | Office Clerk | Illinois |
| 3 | Rose B Hayes | 19 | Daughter | Office Clerk | Illinois |
| 4 | Walter T Hayes | 17 | Son | — | Illinois |
| 5 | Deloris Hayes | 15 | Daughter | — | Illinois |
| 6 | Thomas Marriroe | 28 | Nephew | Helper | Ireland |
| 7 | Elizabeth Meimann | 57 | Head | — | Scotland |
| 8 | Theresa Olivetti | 35 | Daughter | Cookie Maker | Illinois |
| 9 | Alex Olivetti | 32 | Son-in-law | Pipe Maker | Illinois |
| 10 | John Olivetti | 30 | Grandson | Sprayer | Illinois |
| 11 | Mildred E Olivetti | 25 | Daughter-in-law | Clerk | Illinois |
| 12 | Patrick Selfie | 71 | Lodger | — | Scotland |
| 13 | Richard Walker | 55 | Lodger | Laborer | England |
| 14 | Arthur Burke | 22 | Guest | Baker | Illinois |
| 15 | Louis Vorberg | 20 | Grandson | Mixer | Illinois |
| 16 | Donald Meimann | 5 | Grandson | — | Illinois |
| 17 | James Olivetti | 5 | Grandson | — | Illinois |
| 18 | Mary Nolan THIS PERSON | 60 | Head | — | Ireland |
| 19 | Gerald G Nolan | 26 | Son | Time Keeper | Illinois |
| 20 | Richard D Younger | 33 | Head | Chauffeur | Indiana |
| 21 | Henrietta Younger | 29 | Sister | Waitress | Indiana |
| 22 | Valerian Conendon | 43 | Head | Proof Reader | Illinois |
| 23 | Frances E Conendon | 35 | Sister | Stenographer | Illinois |
| 24 | Catherine M Conendon | 32 | Sister | Stenographer | Illinois |
| 25 | Bernadette J Conendon | 27 | Sister | Office Manager | Illinois |
| 26 | James Linder | 50 | Head | Electrician | Illinois |
| 27 | Mary A Linder | 50 | Wife | — | Illinois |
| 28 | Robert T Lundin | 80 | Head | Shipping Clerk | Illinois |
| 29 | Nellie Lundin | 72 | Wife | — | Illinois |
| 30 | James Orr | 39 | Lodger | Machinist | Ireland |
| 31 | Charles Clark | 48 | Lodger | Sheet Metal Worker | Illinois |
| 32 | Dominick Alberti | 54 | Head | Musician | Italy |
| 33 | Mary Alberti | 45 | Wife | — | Italy |
| 34 | Angela Alberti | 21 | Daughter | Stenographer | Illinois |
| 35 | Joseph Alberti | 20 | Son | News-Worker | Illinois |
| 36 | Francis Alberti | 18 | Son | — | Illinois |
| 37 | Camille Alberti | 16 | Daughter | — | Illinois |
| 38 | Anthony Alberti | 15 | Son | — | Illinois |
| 39 | Clara Alberti | 13 | Daughter | — | Illinois |
| 40 | Anna Mae Alberti | 12 | Daughter | — | Illinois |
Related Census Records
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)