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William Hahn — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Cook, Illinois
Our Model Tree links this William Hahn across the 1930 and 1940 US Censuses in Cook, Illinois (XGBoost, ~Confirmed) — first a son (b.~1921), then head of a 10-person household.
Age 9
b. ~1921
Male
Son
Born: Illinois
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Cook, Illinois |
| Surname | Hahn |
| Given Name | William J. |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Additional Details | |
| Occupation | none |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Wilmette Village |
| 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.
10 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| Sarah Calhoune | Other | — | 36 | ~1894 |
| Julia Hahn | Other | — | 40 | ~1890 |
| Adeline Hahn | Daughter | — | 12 | ~1918 |
| George Hahn | Son | — | 10 | ~1920 |
| George Hahn | Head | — | 40 | ~1890 |
| Donald Hahn | Son | — | ~1930 | |
| Richard Hahn | Son | — | 3 | ~1927 |
| William Hahn | Son | — | 9 | ~1921 |
| Thomas Hahn | Son | — | 5 | ~1925 |
| Margaret Hahn | Daughter | — | 7 | ~1923 |
Census Appearances
1930
Cook, Illinois
Son, age 9
Cook, Illinois · implied b. ~1921 — 10 household members
| Surname | Hahn |
| Given Name | William J. |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | none |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Son, age 19
Cook-County, Illinois · implied b. ~1921 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hanna |
| Given Name | William Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Occupation | New Worker |
| Class of Worker | PW |
| Hours Worked | 3 |
| Highest Grade | S 8 |
| 1935 Residence | Illinois |
| 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 William Hahn across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
William Hahn
Son · 1930 · age 9 · b. ~1921 · Illinois
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Sibling
Margaret Hahn
Sibling · 1930 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Hahn
Sibling · 1930 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Adeline Hahn
Sibling · 1930 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Richard Hahn
Sibling · 1930 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Donald Hahn
Sibling · 1930 · age
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
George Hahn
Sibling · 1930 · age 10
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
34 people indexed on this census page (ia:1930:illinoiscensus00reel503:0834)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Phyllis L. Hallbauer | 5 | daughter | None | Illinois |
| 53 | Laurette F. Hallbauer | 30 | wife-H | None | Illinois |
| 54 | Raymond M. Schneidau | 9 | step son | None | Illinois |
| 55 | Lenore E. Miller | 40 | Head | Teacher | Iowa |
| 56 | Mary J. Miller | 14 | daughter | None | Illinois |
| 57 | David S. Miller | 12 | son | None | Illinois |
| 58 | John T. Miller | 8 | son | None | Illinois |
| 59 | Robert M. Miller | 5 | son | None | Illinois |
| 60 | John A. Hood | 88 | father | None | North Carolina |
| 61 | Renee L. Miller | 21 | niece | Sales Clerk | South Dakota |
| 62 | George A. Hahn | 40 | Head | Proprietor | Illinois |
| 63 | Julia J. Hahn | 40 | wife-H | None | Illinois |
| 64 | Adeline M. Hahn | 12 | daughter | None | Illinois |
| 65 | George A. Jr. Hahn | 10 | son | None | Illinois |
| 66 | William J. Hahn THIS PERSON | 9 | son | None | Illinois |
| 67 | Margaret E. Hahn | 7 | daughter | None | Illinois |
| 68 | Thomas E. Hahn | 5 | son | None | Illinois |
| 69 | Richard F. Hahn | 3 | son | None | Illinois |
| 70 | Sarah H. Calhoune | 36 | servant | Maid | South Carolina |
| 71 | Donald J. Hahn | 0 | son | None | Illinois |
| 72 | Myron B. Cattrell | 67 | Head | Salesman | New York |
| 73 | Julie N. Cattrell | 67 | wife-H | None | Iowa |
| 74 | Samuel H. Vowell | 69 | Head | None | Iowa |
| 75 | Ellen D. Vowell | 64 | wife-H | None | Utah |
| 76 | George F. Holden | 51 | Head | Superintendent | Ohio |
| 77 | Florence E. Holden | 50 | wife-H | None | California |
| 78 | Lois F. Holden | 24 | daughter | Statistician | Illinois |
| 79 | William C. Holden | 23 | son | Solicitor | Illinois |
| 80 | William G. Peacock | 52 | Head | President | Illinois |
| 81 | Susan M. Peacock | 46 | wife-H | None | Illinois |
| 82 | Helen A. Peacock | 24 | daughter | Artist | Illinois |
| 83 | William G. Jr. Peacock | 22 | son | None | Michigan |
| 84 | Geraldine S. Peacock | 16 | daughter | None | Illinois |
| 85 | June D. Peacock | 11 | daughter | None | 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)