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Mary Mcdonough — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Cook, Illinois
Our Model Tree links this Mary Mcdonough across the 1930 and 1940 US Censuses in Cook, Illinois (XGBoost, ~Confirmed) — first a daughter (b.~1925), then head of a 7-person household.
Age 5
b. ~1925
Female
Daughter
Born: Illinois
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Cook, Illinois |
| Surname | McDonough |
| Given Name | Mary Jane |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Illinois |
| Additional Details | |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Chicago City |
| Est. Birth Year | ~1925 |
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 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Mcdonough | Daughter | — | 5 | ~1925 |
| Katherine Mcdonough | Daughter | — | 9 | ~1921 |
| Michael Mcdonough | Head | — | 39 | ~1891 |
| Eugene Mcdonough | Son | — | 14 | ~1916 |
| Robert Mcdonough | Son | — | 14 | ~1916 |
| Edward Mcdonough | Son | — | 10 | ~1920 |
| Irene Mcdonough | Spouse | — | 35 | ~1895 |
Census Appearances
1930
Cook, Illinois
Daughter, age 5
Cook, Illinois · implied b. ~1925 — 7 household members
| Surname | McDonough |
| Given Name | Mary Jane |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Daughter, age 16
Cook-County, Illinois · implied b. ~1924 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McDonnell |
| Given Name | Mary Jane |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago city |
| 1935 Residence (County) | Cook |
| Hours Worked | 0 |
| Income (1939) | 0 |
| Highest Grade | Hs 1 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
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.
Show:
This person
Anchor record
Mary Mcdonough
Daughter · 1930 · age 5 · b. ~1925 · Illinois
★ You are viewing this record
Sibling
Robert Mcdonough
Sibling · 1930 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edward Mcdonough
Sibling · 1930 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Eugene Mcdonough
Sibling · 1930 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Katherine Mcdonough
Sibling · 1930 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1930 US Federal Census — Cook, Illinois
Open full size
1930 US Federal Census — Cook, Illinois
Page Contents
50 people indexed on this census page (ia:1930:illinoiscensus00reel477:0795)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Jerome Rozenfeld | 11 | Son | — | Illinois |
| 52 | Caroline Larson | 65 | Head | — | Sweden |
| 53 | Leon Larson | 37 | Son | Laborer | Wisconsin |
| 54 | Carl Larson | 32 | Son | Claim Adjuster | Wisconsin |
| 55 | Walter Larson | 27 | Son | Laborer | Wisconsin |
| 56 | Edward Hansen | 31 | Head | Salesman | Norway |
| 57 | Margaret Hansen | 30 | Wife | — | Poland |
| 58 | Edward Jr Hansen | 8 | Son | — | Illinois |
| 59 | Lenore Hansen | 6 | Daughter | — | Illinois |
| 60 | Otto Goerner | 39 | Head | Machinist | Germany |
| 61 | Margaret Goerner | 38 | Wife | — | Germany |
| 62 | Hilda Goerner | 15 | Daughter | — | Germany |
| 63 | Harold Goerner | 3 | Son | — | Illinois |
| 64 | Lena Thurm | 50 | Head | — | Germany |
| 65 | John Thurm | 26 | Son | Foreman | Illinois |
| 66 | Joseph Oberting | 28 | Head | Driver | Luxembourg |
| 67 | Marie Oberting | 20 | Wife | — | Illinois |
| 68 | Elaine Oberting | 3 | Daughter | — | Illinois |
| 69 | Bernard Mortenson | 31 | Head | Driver | Massachusetts |
| 70 | Marguerite Mortenson | 29 | Wife | — | Illinois |
| 71 | Bernadette Mortenson | 7 | Daughter | — | Illinois |
| 72 | Glenn Mortenson | 5 | Son | — | Illinois |
| 73 | Dolores Mortenson | 2 | Daughter | — | Illinois |
| 74 | Charles Mitchell | 53 | Head | Conductor | England |
| 75 | Alice Mitchell | 48 | Wife | — | Illinois |
| 76 | Michael Mcdonough | 39 | Head | Letter Carrier | Pennsylvania |
| 77 | Irene Mcdonough | 35 | Wife | — | Illinois |
| 78 | Robert Mcdonough | 14 | Son | — | Illinois |
| 79 | Eugene Mcdonough | 14 | Son | — | Illinois |
| 80 | Edward Mcdonough | 10 | Son | — | Illinois |
| 81 | Katherine Mcdonough | 9 | Daughter | — | Illinois |
| 82 | Mary Jane Mcdonough THIS PERSON | 5 | Daughter | — | Illinois |
| 83 | James Graust | 38 | Head | Painter | New York |
| 84 | Hannah Graust | 38 | Wife | — | Sweden |
| 85 | Margaret Graust | 16 | Daughter | Sales Clerk | Illinois |
| 86 | Violet Graust | 14 | Daughter | — | Illinois |
| 87 | Harold Graust | 10 | Son | — | Illinois |
| 88 | Edward Roglow | 46 | Head | Laborer | Bohemia |
| 89 | Emma Roglow | 53 | Wife | — | Bohemia |
| 90 | Edgar Roglow | 18 | Son | Order Boy | Illinois |
| 91 | Raymond Roglow | 13 | Son | Clerk | Illinois |
| 92 | Marion Roglow | 11 | Son | — | Illinois |
| 93 | William Sutos | 30 | Head | Mail Carrier | Germany |
| 94 | Florence Sutos | 27 | Wife | — | Minnesota |
| 95 | Raymond Sutos | 8 | Son | — | Illinois |
| 96 | Joe Seif | 32 | Head | Driver | Illinois |
| 97 | Irene Seif | 32 | Wife | — | Illinois |
| 98 | Marion Seif | 5 | Daughter | — | Illinois |
| 99 | Frank Maier | 29 | Head | Machinist | Bavaria Germany |
| 100 | Barbara Maier | 26 | Wife | Saleslady | Bavaria Germany |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1930 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)