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Mary Mcnulty — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Cook, Illinois
Our Model Tree links this Mary Mcnulty across the 1930 and 1940 US Censuses in Cook, Illinois (XGBoost, ~Confirmed) — first a daughter (b.~1921), then head of a 11-person household.
Age 9
b. ~1921
Female
Daughter
Born: Illinois
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Cook, Illinois |
| Surname | McNulty |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Additional Details | |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Chicago |
| Est. Birth Year | ~1921 |
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.
11 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Donna Mcnulty | Daughter | — | 2 | ~1928 |
| Catherine Murphy | Daughter | — | 30 | ~1900 |
| Edward Mcnulty | Son | — | 25 | ~1905 |
| James Mcnulty | Son | — | 24 | ~1906 |
| Catherine Mcnulty | Spouse | — | 55 | ~1875 |
| James Mcnulty | Son | — | 4 | ~1926 |
| Edward Mcnulty | Son | — | 6 | ~1924 |
| Patricia Mcnulty | Daughter | — | ~1930 | |
| Mary Mcnulty | Daughter | — | 9 | ~1921 |
| Nelly Ryan | Other | — | 22 | ~1908 |
| Michael Mcnulty | Head | — | 70 | ~1860 |
Census Appearances
1930
Cook, Illinois
Daughter, age 9
Cook, Illinois · implied b. ~1921 — 11 household members
| Surname | McNulty |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Daughter, age 20
Cook-County, Illinois · implied b. ~1920 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McNulty |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Highest Grade | C 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 Mcnulty across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Mcnulty
Daughter · 1930 · age 9 · b. ~1921 · Illinois
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Sibling
Donna Mcnulty
Sibling · 1930 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Mcnulty
Sibling · 1930 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Patricia Mcnulty
Sibling · 1930 · age
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edward Mcnulty
Sibling · 1930 · age 25
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Mcnulty
Sibling · 1930 · age 24
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edward Mcnulty
Sibling · 1930 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Catherine Murphy
Sibling · 1930 · age 30
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
49 people indexed on this census page (ia:1930:illinoiscensus00reel425:1033)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Ralph J Cohn | 52 | Head | Attorney | Michigan |
| 52 | Ruby G Cohn | 54 | Wife | — | Illinois |
| 53 | Ralph J Jr Cohn | 26 | Son | Clerk | New York |
| 54 | Jacob Grossman | 54 | Head | Proprietor | Czechoslovakia |
| 55 | Fanny Grossman | 53 | Wife | — | New York |
| 56 | Arthur Grossman | 29 | Son | Agent | New York |
| 57 | David Grossman | 27 | Son | Salesman | New York |
| 58 | Emanuel Grossman | 26 | Son | Real Estate | New York |
| 59 | Charlotte Grossman | 20 | Daughter | Stenographer | New York |
| 60 | Joseph Goldman | 34 | Head | Salesman | Russia |
| 61 | Anna Goldman | 31 | Wife | — | Poland |
| 62 | Alvin Goldman | 5 | Son | — | Illinois |
| 63 | Lester Goldman | 3 | Son | — | Illinois |
| 64 | Dorothy Goldman | 0 | Daughter | — | Illinois |
| 65 | Bernice Tampone | 22 | Boarder | — | West Virginia |
| 66 | George Goldstein | 42 | Head | Partner | Russia |
| 67 | Audrey Goldstein | 31 | Wife | — | Poland |
| 68 | Sidney Goldstein | 5 | Son | — | Illinois |
| 69 | Audrey Simpson | 21 | Servant | — | Illinois |
| 70 | Lucille Mitchell | 40 | Head | Clerk | Illinois |
| 71 | Jack Mitchell | 17 | Son | — | Illinois |
| 72 | Lucille Mitchell | 15 | Daughter | — | Illinois |
| 73 | James G Jackson | 57 | Head | Prop | Germany |
| 74 | Anna Jackson | 51 | Wife | — | Czechoslovakia |
| 75 | Julia Marshall | 55 | Sister-in-law | Bookkeeper | Czechoslovakia |
| 76 | Michael Mcnulty | 70 | Head | — | Irish Free State |
| 77 | Catherine Mcnulty | 55 | Wife | — | Irish Free State |
| 78 | Catherine Murphy | 30 | Daughter | Operator | Illinois |
| 79 | Edward Mcnulty | 25 | Son | Clerk | Illinois |
| 80 | James Mcnulty | 24 | Son | Clerk | Illinois |
| 81 | Mary Mcnulty THIS PERSON | 9 | Daughter | — | Illinois |
| 82 | Edward Mcnulty | 6 | Son | — | Illinois |
| 83 | James Mcnulty | 4 | Son | — | Illinois |
| 84 | Donna M Mcnulty | 2 | Daughter | — | Illinois |
| 85 | Patricia Mcnulty | 0 | Daughter | — | Illinois |
| 86 | Nelly Ryan | 22 | Boarder | Servant | Irish Free State |
| 87 | James Selfe | 38 | Head | Salesman | Missouri |
| 88 | Hazel Selfe | 34 | Wife | — | Missouri |
| 89 | Robert Selfe | 5 | Son | — | Missouri |
| 90 | James Selfe | 1 | Son | — | Illinois |
| 91 | Ellen Holman | 21 | Servant | Servant | Massachusetts |
| 92 | Charles Patten | 42 | Head | Agent | Illinois |
| 93 | Rose Patten | 40 | Wife | — | New Jersey |
| 94 | Ralph V Patten | 14 | Son | — | Illinois |
| 95 | Lillian Patten | 10 | Daughter | — | Illinois |
| 96 | Alexander Samuels | 54 | Head | Manager | Austria |
| 97 | Tillie Samuels | 46 | Wife | — | Poland |
| 98 | Mary Samuels | 19 | Daughter | Teacher | Illinois |
| 99 | August Samuels | 16 | Son | — | Illinois |
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)