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Mary Mulligan — 1930 US Census Record
Model Tree available1930 United States Federal Census · Cook, Illinois
Our Model Tree links this Mary Mulligan across the 1920, 1930 and 1940 US Censuses in Cook, Illinois (XGBoost, ~Confirmed), with identified parents Delia — first a spouse (b.~1895), then head of a 7-person household.
Age 35
b. ~1895
Female
Spouse
Born: Illinois
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Cook, Illinois |
| Surname | Mulligan |
| Given Name | Mary L. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 35 |
| Marital Status | Married |
| Birthplace | Illinois |
| Age at First Marriage | 27 |
| Father's Birthplace | Switzerland|Scotland |
| Mother's Birthplace | Switzerland|Scotland |
| Additional Details | |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Chicago |
| Est. Birth Year | ~1895 |
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 |
|---|---|---|---|---|
| Archibald Brey | Other | — | 31 | ~1899 |
| Robert Mulligan | Head | — | 35 | ~1895 |
| Arthur Brey | Son | — | 6 | ~1924 |
| Lucille Higgins | Spouse | — | 30 | ~1900 |
| Ruth Brey | Spouse | — | 30 | ~1900 |
| John Higgins | Other | — | 31 | ~1899 |
| Mary Mulligan | Spouse | — | 35 | ~1895 |
Census Appearances
1920
Cook, Illinois
Spouse, age 24
Cook, Illinois · implied b. ~1896 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mulligan |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 24 |
| Marital Status | Married |
| Birthplace | Illinois |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Cook, Illinois
Spouse, age 35
Cook, Illinois · implied b. ~1895 — 7 household members
| Surname | Mulligan |
| Given Name | Mary L. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 35 |
| Marital Status | Married |
| Birthplace | Illinois |
| Age at First Marriage | 27 |
| Father's Birthplace | Switzerland|Scotland |
| Mother's Birthplace | Switzerland|Scotland |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Daughter, age 45
Cook-County, Illinois · implied b. ~1895 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Milligan |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 45 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Income (1939) | 0 |
| Highest Grade | H-1 |
| 1935 Residence | Same house |
| 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 Mulligan across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Delia Milligan (~0.92 confidence). The pedigree spans 1 generation with 1 identified ancestor.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Delia Milligan
b. ~1863
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Mulligan
Spouse · 1930 · age 35 · b. ~1895 · 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
50 people indexed on this census page (ia:1930:illinoiscensus00reel448:0024)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Rebecca Goetz | 37 | Wife | Teacher | Illinois |
| 52 | Lena Goetz | 70 | Mother | Home Maker | Germany |
| 53 | Arthur Millner | 31 | Head | Adv. Solicitor | Illinois |
| 54 | Lela Millner | 31 | Wife | — | Iowa |
| 55 | Leroy Millner | 5 | Son | None | Illinois |
| 56 | Walker Millner | 2 | Son | None | Illinois |
| 57 | Robert Millner | 0 | Son | None | Illinois |
| 58 | Bertha Smith | 50 | Mother-in-law | — | Iowa |
| 59 | James H. Wild | 34 | Head | Saleswoman|Salesman | Illinois |
| 60 | Anna Wild | 35 | Wife | Electrician | Illinois |
| 61 | Eileen Wild | 11 | Daughter | — | Illinois |
| 62 | Joan Wild | 1 | Daughter | — | Illinois |
| 63 | Howard Ramsay | 48 | Head | Clerk | Michigan |
| 64 | Catherine Ramsay | 47 | Wife | None | Austria |
| 65 | Henry Rupp | 35 | Roomer | Salesman | Illinois |
| 66 | William Humble | 58 | Head | Armature Winder | Canada Eng. |
| 67 | Alvina Humble | 52 | Wife | None | Germany |
| 68 | Bernice Humble | 22 | Daughter | Stenographer | Illinois |
| 69 | Elinor Capleron | 29 | Roomer | Salesman | Illinois |
| 70 | Earl Herman | 39 | Head | Merchant | Nebraska |
| 71 | Signe Herman | 34 | Wife | Stenographer | Illinois |
| 72 | Mary Herman | 68 | Mother | None | Iowa |
| 73 | Ethel M. Herman | 44 | Sister | Stenographer | Nebraska |
| 74 | Clarence Brent | 66 | Head | Accountant | Virginia |
| 75 | Jennie E. Brent | 69 | Wife | None | Denmark |
| 76 | Carl E. Holtz | 28 | Head | Proprietor | Illinois |
| 77 | Helen Holtz | 24 | Wife | None | Sweden |
| 78 | Howard Hedges | 30 | Head | Manufacturer | Massachusetts |
| 79 | Ellen Hedges | 28 | Wife | Senior Clerk | Illinois |
| 80 | Joseph Flint | 34 | Head | Plasterer | Illinois |
| 81 | Joseph W. Flint | 14 | Son | None | Illinois |
| 82 | Robert T. Flint | 8 | Son | None | Illinois |
| 83 | Joseph W. Flint | 69 | Father | None | Illinois |
| 84 | Robert E. Mulligan | 35 | Head | Janitor | Illinois |
| 85 | Mary L. Mulligan THIS PERSON | 35 | Wife | None | Illinois |
| 86 | Archibald Brey | 31 | R | Clerk | Illinois |
| 87 | Ruth A. Brey | 30 | Wife | None | Kansas |
| 88 | Arthur M. Brey | 6 | Son | None | Illinois |
| 89 | John J. Higgins | 31 | R | Salesman | Illinois |
| 90 | Lucille Higgins | 30 | Wife | Typist | Illinois |
| 91 | Edward O'Connor | 50 | Head | Engineer | Illinois |
| 92 | Dorothy O'Connor | 47 | Wife | None | Illinois |
| 93 | Carl G. Erickson | 37 | Head | Janitor | Sweden |
| 94 | Selma Erickson | 32 | Wife | None | Sweden |
| 95 | Gladys B. Erickson | 0 | Daughter | None | Illinois |
| 96 | August Arnemann | 56 | R | Produce Manager | Nebraska |
| 97 | Jennie Arnemann | 52 | Wife | None | Indiana |
| 98 | Morton D. Hornell | 37 | R | Accountant | New Mexico |
| 99 | Louise E. Hornell | 35 | Wife | None | Colorado |
| 100 | Evaline Hornell | 0 | Daughter | None | Kansas |
Pedigree Summary
Mary
Gen 1 · 1 parents
~0.92
Max depth 4 (1900–1950 window)
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)