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John Mcnulty — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this John Mcnulty across the 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a head (b.~1875), then head of a 6-person household.
Age 65
b. ~1875
Male
Head
Born: Ireland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | McNulty |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 65 |
| Marital Status | Married |
| Birthplace | Ireland |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Naturalization Status | Naturalized |
| Additional Details | |
| Occupation | Motorman |
| Industry | Surface Lines |
| Class of Worker | PW |
| Hours Worked | 56 |
| Income (1939) | 1650 |
| Highest Grade | No 8 |
| 1935 Residence | Same house |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
| Occupation | Motorman |
| Township / Ward | Chicago |
| Est. Birth Year | ~1875 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Francis Mcnulty | Son | — | 28 | ~1912 |
| Joseph Mcnulty | Son | — | 20 | ~1920 |
| Jane Mcnulty | Spouse | — | 64 | ~1876 |
| Anna Mcnulty | Daughter | — | 32 | ~1908 |
| John Mcnulty | Head | — | 65 | ~1875 |
| Kathleen Mcnulty | Daughter | — | 25 | ~1915 |
Census Appearances
1930
Cook, Illinois
Head, age 57
Cook, Illinois · implied b. ~1873 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McNulty |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 57 |
| Marital Status | Married |
| Birthplace | Ireland |
| Naturalization Status | Naturalized |
| Year of Immigration | 1891 |
| Age at First Marriage | 21 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | driver |
| Industry | Wagon |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Home Owned/Rented | O |
| Home Value / Rent | 7000 |
| Radio Set | R |
| Veteran | No |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1940
Cook-County, Illinois
Head, age 65
Cook-County, Illinois · implied b. ~1875 — 6 household members
| Surname | McNulty |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 65 |
| Marital Status | Married |
| Birthplace | Ireland |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Naturalization Status | Naturalized |
| Occupation | Motorman |
| Industry | Surface Lines |
| Class of Worker | PW |
| Hours Worked | 56 |
| Income (1939) | 1650 |
| 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 John Mcnulty across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
John Mcnulty
Head · 1940 · age 65 · b. ~1875 · 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-t0627-00957-00273)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | James Sweeney | 39 | Head | Laborer | Illinois |
| 2 | Helen Sweeney | 40 | Wife | — | Irish Free State |
| 3 | James Sweeney | 9 | Son | — | Illinois |
| 4 | Michael Sweeney | 7 | Son | — | Illinois |
| 5 | Raymond Sweeney | 5 | Son | — | Illinois |
| 6 | Daniel Sweeney | 2 | Son | — | Illinois |
| 7 | Harry Hart | 31 | Head | Draughtsman | Illinois |
| 8 | Lucille Hart | 26 | Wife | — | Illinois |
| 9 | Robert Hart | 5 | Son | — | Illinois |
| 10 | Rose Marie Hart | 2 | Daughter | — | Illinois |
| 11 | Joseph Coyner | 78 | Head | Watchman | Canada French |
| 12 | Rosanna Coyner | 69 | Wife | — | Illinois |
| 13 | William Coyner | 32 | Son | Stock Clerk | Illinois |
| 14 | Veronica Coyner | 30 | Daughter-in-law | Typist | Illinois |
| 15 | Jacob Evans | 72 | Head | Machinist | Holland |
| 16 | Harriet Evans | 70 | Wife | — | Holland |
| 17 | Wilburn Evans | 24 | Son-in-law | Machinist Hand | Illinois |
| 18 | Alice Evans | 24 | Daughter | Drafts-Lady | Illinois |
| 19 | John Mcnulty THIS PERSON | 65 | Head | Motorman | Ireland |
| 20 | Jane Mcnulty | 64 | Wife | — | Ireland |
| 21 | Anna Mcnulty | 32 | Daughter | Comptometer Oper. | Illinois |
| 22 | Francis Mcnulty | 28 | Son | Prop. Maintenance | Illinois |
| 23 | Joseph Mcnulty | 20 | Son | Stock Clerk | Illinois |
| 24 | Kathleen Mcnulty | 25 | Daughter | Seamstress | Illinois |
| 25 | Thomas Kasper | 41 | Head | Weaver | Poland |
| 26 | Hattie Kasper | 38 | Wife | Seamstress | Poland |
| 27 | Edward Kasper | 17 | Son | — | Illinois |
| 28 | Louis Maffei | 55 | Head | Bread Salesman | Illinois |
| 29 | Emma Maffei | 55 | Wife | — | Illinois |
| 30 | Elizabeth Maffei | 30 | Daughter | Secretary | Illinois |
| 31 | Dorothy Maffei | 23 | Daughter | Typist | Illinois |
| 32 | John Mason | 37 | Head | Truck Driver | Illinois |
| 33 | Lauretta Mason | 35 | Wife | — | Illinois |
| 34 | Mary Mason | 11 | Daughter | — | Illinois |
| 35 | Emmett Flynn | 44 | Head | Deputy Assessor | Illinois |
| 36 | Mary Flynn | 42 | Wife | — | Illinois |
| 37 | Mary Jane Flynn | 7 | Daughter | — | Illinois |
| 38 | Gustaf Nelson | 40 | Head | Carpenter | Sweden |
| 39 | Anna Nelson | 40 | Wife | — | Illinois |
| 40 | Peterson Nelson | 79 | Brother-in-law | — | Sweden |
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)