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Mary Mahoney — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Cook, Illinois
Our Model Tree links this Mary Mahoney across the 1920, 1930 and 1940 US Censuses in Cook, Illinois (XGBoost, ~Confirmed) — first a spouse (b.~1897), then head of a 4-person household.
Age 33
b. ~1897
Female
Spouse
Born: Illinois
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Cook, Illinois |
| Surname | Mahoney |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 33 |
| Marital Status | Married |
| Birthplace | Illinois |
| Age at First Marriage | 20 |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Chicago |
| Est. Birth Year | ~1897 |
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.
4 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Constance Mahoney | Daughter | — | 6 | ~1924 |
| Joseph Mahoney | Head | — | 38 | ~1892 |
| Joseph Mahoney | Son | — | ~1930 | |
| Mary Mahoney | Spouse | — | 33 | ~1897 |
Census Appearances
1920
Cook, Illinois
Spouse, age 23
Cook, Illinois · implied b. ~1897 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mahoney |
| Given Name | Mary |
| Relationship to Head | wife |
| Sex | F |
| Color / Race | White |
| Age | 23 |
| Marital Status | Married |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Cook, Illinois
Spouse, age 33
Cook, Illinois · implied b. ~1897 — 4 household members
| Surname | Mahoney |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 33 |
| Marital Status | Married |
| Birthplace | Illinois |
| Age at First Marriage | 20 |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
Spouse, age 43
Cook-County, Illinois · implied b. ~1897 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mahoney |
| Given Name | Margaret |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 43 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Occupation | 0 |
| Industry | 0 |
| Class of Worker | 0 |
| Highest Grade | H 2 |
| 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 Mahoney across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Mahoney
Spouse · 1930 · age 33 · b. ~1897 · Illinois
★ You are viewing this record
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
38 people indexed on this census page (ia:1930:illinoiscensus00reel474:0429)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Joseph F Mahoney | 38 | Head | Milkman | Bohemia |
| 52 | Mary Mahoney THIS PERSON | 33 | Wife | — | Illinois |
| 53 | Constance Mahoney | 6 | Daughter | — | Illinois |
| 54 | Joseph P Mahoney | 0 | Son | — | Illinois |
| 55 | William Neyland | 42 | Head | Chauffeur | Illinois |
| 56 | Gertrude Neyland | 35 | Wife-H | — | Illinois |
| 57 | Frederick W Neyland | 17 | Son | — | Illinois |
| 58 | Jeannie M Neyland | 13 | Daughter | — | Illinois |
| 59 | Shirley D Neyland | 4 | Daughter | — | Illinois |
| 60 | William P Salome | 28 | Head | Chauffeur | Lithuania |
| 61 | Lucille D Salome | 30 | Wife-H | — | Missouri |
| 62 | Emil R Gubrecht | 67 | Head | Physician | Germany |
| 63 | Selma J Gubrecht | 52 | Wife-H | — | Illinois |
| 64 | John F Genge | 30 | Head | Salesman | Illinois |
| 65 | Gertrude P Genge | 27 | Wife-H | — | Illinois |
| 66 | June M Genge | 3 | Daughter | — | Illinois |
| 67 | John A Puhuke | 57 | Head | Finisher | Illinois |
| 68 | Rose A Puhuke | 47 | Wife-H | — | Illinois |
| 69 | Charles D Martin | 38 | Head | Salesman | Ohio |
| 70 | Carrie V Martin | 35 | Wife-H | — | Wisconsin |
| 71 | Ellen J Martin | 4 | Son | — | Illinois |
| 72 | Fred W Ziebell | 49 | Head | Upholsterer | Germany |
| 73 | Anna M Ziebell | 49 | Wife-H | — | Wisconsin |
| 74 | William G Ziebell | 19 | Son | Office Work | Illinois |
| 75 | Margaret A Ziebell | 14 | Daughter | — | Illinois |
| 76 | Michael Michalitski | 67 | Head | — | Germany |
| 77 | Mary Michalitski | 63 | Wife-H | — | Germany |
| 78 | Joe M Sunovak | 36 | Head | Mechanic | Illinois |
| 79 | Susan B Sunovak | 32 | Wife-H | — | Illinois |
| 80 | Joan A Sunovak | 3 | Daughter | — | Illinois |
| 81 | Jesse W Grouse | 52 | Head | Accountant | Pennsylvania |
| 82 | Christina M Grouse | 42 | Wife-H | Designer | Illinois |
| 83 | John C Briel | 76 | Father-in-law | — | Germany |
| 84 | Mary N Briel | 70 | Mother-in-law | — | Illinois |
| 85 | Walter G Gang | 27 | Brother-in-law | Postal Clerk | Illinois |
| 86 | Sarah M Gang | 19 | Sister-in-law | — | Illinois |
| 87 | Evelyn M Gang | 1 | Niece | — | Illinois |
| 90 | Angela Puhuke | 21 | Daughter | Stenographer | Illinois |
Related Census Records
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)