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Mary Mcdonough — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Mary Mcdonough across the 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a spouse (b.~1908), then head of a 7-person household.
Age 32
b. ~1908
Female
Spouse
Born: Irish Free State
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | McDonough |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | Irish Free State |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Naturalization Status | Naturalized |
| Additional Details | |
| Class of Worker | 0 |
| Highest Grade | H 2 |
| 1935 Residence | Same place |
| Birthplace (normalized) | irish free state |
| Township / Ward | Chicago |
| Est. Birth Year | ~1908 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Mcdonough | Daughter | — | 8 | ~1932 |
| Coleman Mcdonough | Head | — | 36 | ~1904 |
| James Mcdonough | Son | — | 2 | ~1938 |
| Helen Mcdonough | Son | — | 7 | ~1933 |
| Michael Mcdonough | Son | — | 4 | ~1936 |
| Patrick Mcdonough | Son | — | 6 | ~1934 |
| Mary Mcdonough | Spouse | — | 32 | ~1908 |
Census Appearances
1930
Cook, Illinois
Other, age 22
Cook, Illinois · implied b. ~1908 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McDonough |
| Given Name | Mary |
| Relationship to Head | Servant |
| Sex | F |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Irish Free State |
| Naturalization Status | Alien |
| Year of Immigration | 1926 |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | Irish Free State |
| Occupation | Servant |
| Industry | Private Home |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Birthplace (normalized) | irish free state |
1940
Cook-County, Illinois
Spouse, age 32
Cook-County, Illinois · implied b. ~1908 — 7 household members
| Surname | McDonough |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | Irish Free State |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Naturalization Status | Naturalized |
| Class of Worker | 0 |
| Highest Grade | H 2 |
| 1935 Residence | Same place |
| Birthplace (normalized) | irish free state |
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 Mcdonough across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Mcdonough
Spouse · 1940 · age 32 · b. ~1908 · 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-t0627-01008-00028)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | George Walter | 5 | Son | — | Illinois |
| 42 | Rosario Brocato | 66 | Head | — | Italy |
| 43 | Rose Brocato | 54 | Wife | — | Italy |
| 44 | Frances Fennel | 37 | Daughter | Sales Girl Retail | Louisiana |
| 45 | Richard Fennel | 5 | Grandson | — | Illinois |
| 46 | Coleman Mcdonough | 36 | Head | Laborer | Irish Free State |
| 47 | Mary Mcdonough THIS PERSON | 32 | Wife | — | Irish Free State |
| 48 | Mary Lou Mcdonough | 8 | Daughter | — | Illinois |
| 49 | Helen Mcdonough | 7 | Son | — | Illinois |
| 50 | Patrick Mcdonough | 6 | Son | — | Illinois |
| 51 | Michael Mcdonough | 4 | Son | — | Illinois |
| 52 | James Mcdonough | 2 | Son | — | Illinois |
| 53 | Helen Page | 40 | Head | Laundress | Illinois |
| 54 | Elmer Page | 7 | Son | — | Illinois |
| 55 | Douglas Middleton | 60 | Lodger | Painter | Scotland |
| 56 | Adolph Handman | 59 | Head | Baker | Germany |
| 57 | Elmer Handman | 28 | Son | Baker | Illinois |
| 58 | Joseph Gadaima | 37 | Head | Candy Maker | Hungary |
| 59 | Helen Gadaima | 30 | Wife | — | Hungary |
| 60 | Adolph Gadaima | 6 | Son | — | Illinois |
| 61 | Charles Katona | 62 | Head | Tailor | Hungary |
| 62 | Erma Katona | 55 | Wife | — | Hungary |
| 63 | Carl Katona | 27 | Son | Presser | Hungary |
| 64 | Charles Katona | 23 | Son | Presser | Illinois |
| 65 | Agnes Strehlow | 27 | Head | Assembler | Illinois |
| 66 | Virginia Strehlow | 8 | Daughter | — | Illinois |
| 67 | Raymond Strehlow | 4 | Son | — | Illinois |
| 68 | Mary Mummer | 72 | Mother | Laundress | Germany |
| 69 | Arne Hess | 41 | Head | Roofer | Hungary |
| 70 | Caroline Hess | 71 | Aunt | — | Germany |
| 71 | Clark Main | 25 | Head | Baker | Scotland |
| 72 | Cana Main | 21 | Wife | — | Illinois |
| 73 | Clark Jr. Main | 6 | Son | — | Illinois |
| 74 | Joan Main | 4 | Daughter | — | Illinois |
| 75 | Charles Katimagna | 28 | Head | Material Clerk | Italy |
| 76 | Eleanor Katimagna | 24 | Wife | — | Illinois |
| 77 | Harold Moore | 22 | Brother-in-law | Soda Clerk | Illinois |
| 78 | John Calabrese | 50 | Head | Packer | Italy |
| 79 | Jennie Calabrese | 48 | Wife | — | Italy |
| 80 | Elwood Rhode | 22 | Head | Painter | Ohio |
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)