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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.~1900), then head of a 7-person household.
Age 40
b. ~1900
Female
Spouse
Born: Ireland
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 | 40 |
| Marital Status | Married |
| Birthplace | Ireland |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Naturalization Status | Naturalized |
| Additional Details | |
| Highest Grade | 8 |
| 1935 Residence | Same Place |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
| Township / Ward | Chicago |
| Est. Birth Year | ~1900 |
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 |
|---|---|---|---|---|
| Patricia Mcdonough | Daughter | — | 14 | ~1926 |
| Mary Mcdonough | Daughter | — | 16 | ~1924 |
| Loretta Mcdonough | Daughter | — | 9 | ~1931 |
| Reilly Mcdonough | Head | — | 48 | ~1892 |
| Nellie Galligan | Other | — | 42 | ~1898 |
| William Mcdonough | Son | — | 5 | ~1935 |
| Mary Mcdonough | Spouse | — | 40 | ~1900 |
Census Appearances
1930
Cook, Illinois
Other, age 30
Cook, Illinois · implied b. ~1900 — 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 | 30 |
| Marital Status | Single |
| Birthplace | Ireland |
| Naturalization Status | Naturalized |
| Year of Immigration | 1920 |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | Irish Free State |
| Occupation | servant |
| Industry | Private family |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1940
Cook-County, Illinois
Spouse, age 40
Cook-County, Illinois · implied b. ~1900 — 7 household members
| Surname | McDonough |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Ireland |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Naturalization Status | Naturalized |
| Highest Grade | 8 |
| 1935 Residence | Same Place |
| 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 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 40 · b. ~1900 · 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-t0627-00994-00550)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Morris Newman | 32 | Head | Commercial | Missouri |
| 42 | Charlotte Newman | 30 | Wife | Bookkeeper | Indiana |
| 43 | Mary Lou Murphy | 12 | Daughter | — | Illinois |
| 44 | Della Prior | 67 | Mother-in-law | — | Ireland |
| 45 | Thomas O'Sullivan | 32 | Head | Factory Worker | Ireland |
| 46 | Margaret O'Sullivan | 28 | Wife | — | Ireland |
| 47 | Margaret O'Sullivan | 1 | Daughter | — | Illinois |
| 48 | John Kawozynski | 43 | Head | Assembler | Illinois |
| 49 | Pearl Kawozynski | 43 | Wife | — | Illinois |
| 50 | Leonard Kawozynski | 22 | Son | Diemaker | Illinois |
| 51 | Thomas Kawozynski | 20 | Son | Office Work | Illinois |
| 52 | Frances Miller | 50 | Lodger | Seamstress | Illinois |
| 53 | Lucille Miller | 28 | Lodger | Receptionist | Illinois |
| 54 | Lawrence Conway | 33 | Head | Repairman | Ireland |
| 55 | Margaret Conway | 30 | Wife | — | Ireland |
| 56 | Lawrence Jr. Conway | 2 | Son | — | Illinois |
| 57 | Margaret Conway | 0 | Daughter | — | Illinois |
| 58 | Reilly Mcdonough | 48 | Head | Agent | Ireland |
| 59 | Mary Mcdonough THIS PERSON | 40 | Wife | — | Ireland |
| 60 | Mary Mcdonough | 16 | Daughter | — | Illinois |
| 61 | Patricia Mcdonough | 14 | Daughter | — | Illinois |
| 62 | Loretta Mcdonough | 9 | Daughter | — | Illinois |
| 63 | William Mcdonough | 5 | Son | — | Illinois |
| 64 | Nellie Galligan | 42 | Lodger | Nurse | Ireland |
| 65 | Patrick Condon | 52 | Head | Police Officer | Ireland |
| 66 | Mary J. Condon | 43 | Wife | — | Ireland |
| 67 | William Condon | 19 | Son | Elevator Operator | Illinois |
| 68 | Robert Condon | 16 | Son | — | Illinois |
| 69 | George P. Condon | 15 | Son | — | Illinois |
| 70 | Mary C. Condon | 12 | Daughter | — | Illinois |
| 71 | Katherine Crotty | 70 | Mother-in-law | — | Ireland |
| 72 | Patrick O'Shea | 50 | Head | Police Officer | Ireland |
| 73 | Sheila O'Shea | 40 | Wife | Nurse | Ireland |
| 74 | Patrick J. O'Shea | 10 | Son | — | Illinois |
| 75 | Mary Laughlin | 24 | Lodger | Office Work | Illinois |
| 76 | Michael Buraschewski | 47 | Head | Chauffeur | Poland |
| 77 | Helen Buraschewski | 41 | Wife | — | Poland |
| 78 | Mildred Buraschewski | 13 | Daughter | — | Illinois |
| 79 | William Buraschewski | 7 | Son | — | Illinois |
| 80 | Michael Regan | 52 | Head | Conductor | Ireland |
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)