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William Hahn — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Ventura-County, California
Our Model Tree links this William Hahn across the 1930 and 1940 US Censuses in Ventura-County, California (XGBoost, ~Confirmed) — first a head (b.~1873), then head of a 4-person household.
Age 67
b. ~1873
Male
Head
Born: Germany
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Ventura-County, California |
| Surname | Hahn |
| Given Name | William |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 67 |
| Marital Status | Married |
| Birthplace | Germany |
| 1935 Residence (City) | Hueneme |
| 1935 Residence (County) | Ventura |
| Naturalization Status | Naturalized |
| Additional Details | |
| Class of Worker | U |
| Hours Worked | 0 |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth Country | Germany |
| Birthplace (normalized) | germany |
| Township / Ward | Hueneme |
| Est. Birth Year | ~1873 |
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 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| William Hahn | Head | — | 67 | ~1873 |
| Billy Hahn | Son | — | 18 | ~1922 |
| Mary Hahn | Daughter | — | 20 | ~1920 |
| E Hahn | Spouse | — | 58 | ~1882 |
Census Appearances
1930
Ventura, California
Head, age 57
Ventura, California · implied b. ~1873 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hahn |
| Given Name | William |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 57 |
| Marital Status | Married |
| Birthplace | Germany |
| Naturalization Status | Naturalized |
| Year of Immigration | 1846 |
| Age at First Marriage | 24 |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Occupation | Caretaker |
| Industry | Gun Club |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | German |
| Home Owned/Rented | R |
| Home Value / Rent | 20 |
| Birth Country | Germany |
| Birthplace (normalized) | germany |
1940
Ventura-County, California
Head, age 67
Ventura-County, California · implied b. ~1873 — 4 household members
| Surname | Hahn |
| Given Name | William |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 67 |
| Marital Status | Married |
| Birthplace | Germany |
| 1935 Residence (City) | Hueneme |
| 1935 Residence (County) | Ventura |
| Naturalization Status | Naturalized |
| Class of Worker | U |
| Hours Worked | 0 |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth Country | Germany |
| Birthplace (normalized) | germany |
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
Head · 1940 · age 67 · b. ~1873 · California
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Ventura-County, California
Open full size
1940 US Federal Census — Ventura-County, California
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00363-00636)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | William Hahn THIS PERSON | 67 | Head | — | Germany |
| 2 | E. Emma Hahn | 58 | Wife | — | Iowa |
| 3 | Mary Ellen Hahn | 20 | Daughter | Beauty Operator | Iowa |
| 4 | Billy Hahn | 18 | Son | Laborer | California |
| 5 | Wilson Ward | 29 | Head | Laborer | Texas |
| 6 | Gladney Ward | 24 | Wife | Laborer | Texas |
| 7 | Ronald Ward | 3 | Son | — | California |
| 8 | Larry Ward | 2 | Son | — | California |
| 9 | Rosie Sharp | 54 | Mother | — | Arkansas |
| 10 | Carlton Douglas | 42 | Head | Electrician | Canada-Eng |
| 11 | Annie Douglas | 29 | Wife | — | New York |
| 12 | Carlton Jr Douglas | 7 | Son | — | California |
| 13 | Charlotte Douglas | 5 | Daughter | — | California |
| 14 | Richard Edwin Douglas | 2 | Son | — | California |
| 15 | Maude Wright | 73 | Head | Housewife | England |
| 16 | Julius Galloway | 34 | Head | Packer | Texas |
| 17 | Irene Galloway | 28 | Wife | Grader | California |
| 18 | John Peterson | 41 | Head | Gardener | Scotland |
| 19 | Florence Peterson | 33 | Wife | — | Indiana |
| 20 | Effie Leavelle | 47 | Head | Grader | California |
| 21 | Lucy Leavelle | 45 | Sister | Grader | California |
| 22 | Gene Schultz | 23 | Nephew | Sprayer | California |
| 23 | Jerry Schultz | 21 | Nephew | — | California |
| 24 | Voyle Logue | 52 | Head | — | Arkansas |
| 25 | Joseph Logue | 21 | Son | Laborer | Arkansas |
| 26 | Beatrice Logue | 19 | Daughter | Packer | Arkansas |
| 27 | James Wyndle | 54 | Head | Laborer | Arkansas |
| 28 | Lora Wyndle | 52 | Wife | Grader | Arkansas |
| 29 | Earles Wyndle | 30 | Son | Laborer | Arkansas |
| 30 | Emmaline Wyndle | 27 | Daughter | — | Arkansas |
| 31 | William Wyndle | 22 | Son | Laborer | Arkansas |
| 32 | James Wyndle | 18 | Son | — | Arkansas |
| 33 | Ira Fay Wyndle | 14 | Daughter | — | Arkansas |
| 34 | Robert Campbell | 20 | Head | Carpenter | Idaho |
| 35 | Marie Campbell | 17 | Wife | — | Iowa |
| 36 | Veda Campbell | 0 | Daughter | — | California |
| 37 | Agnita Muldowney | 67 | Head | — | New York |
| 38 | Allie Knip | 65 | Sister | Housekeeper | New York |
| 39 | Frank Rodgers | 43 | Head | Carpenter | Indiana |
| 40 | Mona Rodgers | 50 | Wife | — | Iowa |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1940 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)