MD
Mary Dugan — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Mary Dugan across the 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a spouse (b.~1887), then head of a 8-person household.
Age 53
b. ~1887
Female
Spouse
Born: Nebraska
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Dugan |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 53 |
| Marital Status | Married |
| Birthplace | Nebraska |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Class of Worker | 0 |
| Highest Grade | H 1 |
| 1935 Residence | Same place |
| Birth State | Nebraska |
| Birth Country | United States |
| Birthplace (normalized) | nebraska |
| Township / Ward | Chicago |
| Est. Birth Year | ~1887 |
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 |
|---|---|---|---|---|
| Matthew Dugan | Head | — | 63 | ~1877 |
| Francis Dugan | Son | — | 24 | ~1916 |
| Matt Dugan | Son | — | 31 | ~1909 |
| John Dugan | Son | — | 22 | ~1918 |
| Mary Dugan | Spouse | — | 53 | ~1887 |
| Joseph Dugan | Son | — | 18 | ~1922 |
| William Dugan | Son | — | 29 | ~1911 |
| Mary Dugan | Daughter | — | 33 | ~1907 |
Census Appearances
1930
Cook, Illinois
Spouse, age 44
Cook, Illinois · implied b. ~1886 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Dagan |
| Given Name | Mae H. |
| Relationship to Head | wife |
| Sex | F |
| Color / Race | White |
| Age | 44 |
| Marital Status | Married |
| Birthplace | Nebraska |
| Age at First Marriage | 21 |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Nebraska |
| Birth Country | United States |
| Birthplace (normalized) | nebraska |
1940
Cook-County, Illinois
Spouse, age 53
Cook-County, Illinois · implied b. ~1887 — 8 household members
| Surname | Dugan |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 53 |
| Marital Status | Married |
| Birthplace | Nebraska |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Class of Worker | 0 |
| Highest Grade | H 1 |
| 1935 Residence | Same place |
| Birth State | Nebraska |
| Birth Country | United States |
| Birthplace (normalized) | nebraska |
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 Dugan across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Dugan
Spouse · 1940 · age 53 · b. ~1887 · 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-t0627-00953-00148)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Matthew Dugan | 63 | Head | Laborer | Nebraska |
| 42 | Mary Dugan THIS PERSON | 53 | Wife | — | Nebraska |
| 43 | Mary Dugan | 33 | Daughter | — | Nebraska |
| 44 | Matt Dugan | 31 | Son | Trucker | Nebraska |
| 45 | William Dugan | 29 | Son | Time Keeper | Nebraska |
| 46 | Francis Dugan | 24 | Son | Laborer | Minnesota |
| 47 | John Dugan | 22 | Son | Painter | Nebraska |
| 48 | Joseph Dugan | 18 | Son | New Worker | Minnesota |
| 49 | James Kelly | 41 | Head | Laborer | Irish Free State |
| 50 | Ellen Kelly | 37 | Wife | — | Irish Free State |
| 51 | Martin Greaney | 55 | Lodger | Laborer | Irish Free State |
| 52 | James Maree | Macee | 45 | Head | Teamster | Northern Ireland |
| 53 | Margaret Maree | Macee | 39 | Wife | — | Northern Ireland |
| 54 | Mary M. Maree | Macee | 8 | Daughter | — | Illinois |
| 55 | James C. Maree | Macee | 5 | Son | — | Illinois |
| 56 | Catherine T. Maree | Macee | 5 | Daughter | — | Illinois |
| 57 | Elmer Larson | 37 | Head | Pattern Maker | Illinois |
| 58 | Eva Larson | 35 | Wife | — | Illinois |
| 59 | Evelyn Larson | 12 | Daughter | — | Illinois |
| 60 | Carl Larson | 7 | Son | — | Illinois |
| 61 | Frank Karamagianis | 47 | Head | Grocery Clerk | Greece |
| 62 | Pauline Karamagianis | 37 | Wife | — | Greece |
| 63 | Catherine Karamagianis | 16 | Daughter | — | Illinois |
| 64 | Gus Karamagianis | 15 | Son | — | Illinois |
| 65 | Mary Karamagianis | 15 | Daughter | — | Illinois |
| 66 | Bertha Karamagianis | 13 | Daughter | — | Illinois |
| 67 | Collette Karamagianis | 4 | Daughter | — | Illinois |
| 68 | Arthur Karamagianis | 4 | Son | — | Illinois |
| 69 | Nick Mallinis | 40 | Brother in law | Merchant | Greece |
| 70 | Michael Jockel | 34 | Head | — | Illinois |
| 71 | Lorain Jockel | 16 | Daughter | — | Illinois |
| 72 | John Jockel | 13 | Son | — | Illinois |
| 73 | Marion Jockel | 11 | Daughter | — | Illinois |
| 74 | Collins Francis | 29 | Head | Shipping Clerk | Illinois |
| 75 | Rita Francis | 26 | Wife | — | Illinois |
| 76 | Joyce Ann Francis | 2 | Daughter | — | Illinois |
| 77 | Margaret M. Francis | 0 | Daughter | — | Illinois |
| 78 | William Geiger | 31 | Head | Detective | Philadelphia |
| 79 | Rose Geiger | 29 | Wife | — | Michigan |
| 80 | Emma Panther | 53 | Mother in law | — | California |
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)