JH
John Hahn — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Orleans-County, Louisiana
Our Model Tree links this John Hahn across the 1930 and 1940 US Censuses in Orleans-County, Louisiana (XGBoost, ~Confirmed) — first a head (b.~1880), then head of a 4-person household.
Age 60
b. ~1880
Male
Head
Born: Louisiana
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Orleans-County, Louisiana |
| Surname | Hahn |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 60 |
| Marital Status | Married |
| Birthplace | Louisiana |
| 1935 Residence (City) | New Orleans City |
| 1935 Residence (County) | Orleans Parish |
| Additional Details | |
| Occupation | Watchman |
| Industry | Cotton Warehouse |
| Class of Worker | PW |
| Hours Worked | 72 |
| Income (1939) | 602 |
| Highest Grade | No 3 |
| 1935 Residence | Same house |
| Birth State | Louisiana |
| Birth Country | United States |
| Birthplace (normalized) | louisiana |
| Occupation | Watchman |
| Township / Ward | New Orleans City |
| Est. Birth Year | ~1880 |
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 John | Age | Birth yr |
|---|---|---|---|---|
| Ruth Hahn | Spouse | — | 54 | ~1886 |
| John Hahn | Head | — | 60 | ~1880 |
| Ruth Hahn | Daughter | — | 21 | ~1919 |
| Floyd Hahn | Son | — | 25 | ~1915 |
Census Appearances
1930
Orleans, Louisiana
Head, age 50
Orleans, Louisiana · implied b. ~1880 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hahn |
| Given Name | John A. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 50 |
| Marital Status | Married |
| Birthplace | Louisiana |
| Age at First Marriage | 21 |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Occupation | Packer |
| Industry | Sugar Refinery |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 16.00 |
| Veteran | No |
| Birth State | Louisiana |
| Birth Country | United States |
| Birthplace (normalized) | louisiana |
1940
Orleans-County, Louisiana
Head, age 60
Orleans-County, Louisiana · implied b. ~1880 — 4 household members
| Surname | Hahn |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 60 |
| Marital Status | Married |
| Birthplace | Louisiana |
| 1935 Residence (City) | New Orleans City |
| 1935 Residence (County) | Orleans Parish |
| Occupation | Watchman |
| Industry | Cotton Warehouse |
| Class of Worker | PW |
| Hours Worked | 72 |
| Income (1939) | 602 |
| Highest Grade | No 3 |
| 1935 Residence | Same house |
| Birth State | Louisiana |
| Birth Country | United States |
| Birthplace (normalized) | louisiana |
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 John Hahn across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Hahn
Head · 1940 · age 60 · b. ~1880 · Louisiana
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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 — Orleans-County, Louisiana
Open full size
1940 US Federal Census — Orleans-County, Louisiana
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-01426-00303)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Ronald Helmke | 1 | Son | — | Alabama |
| 43 | Joseph Hovell | 62 | Head | Manager | Louisiana |
| 44 | Nellie Hovell | 60 | Wife | — | Louisiana |
| 45 | Gerard Hovell | 28 | Son | Laborer | Louisiana |
| 46 | Earnest Moran | 53 | Son-in-law | — | Pennsylvania |
| 47 | Lillian Moran | 45 | Step-daughter | — | Louisiana |
| 48 | Olanis Key | 63 | Head | Manager | Massachusetts |
| 49 | Henrietta Key | 49 | Wife | Helper | Louisiana |
| 50 | Millicent Prewitt | 24 | Step-daughter | — | Louisiana |
| 51 | William Prewitt | 29 | Son-in-law | Salesman | Texas |
| 52 | William Prewitt | 2 | Grand-child | — | Louisiana |
| 53 | Millicent Prewitt | 0 | Grand-child | — | Louisiana |
| 54 | Bernhardt Helmke | 27 | Head | Platform-Man | Louisiana |
| 55 | Dorothy Helmke | 27 | Wife | — | Louisiana |
| 56 | Bernhardt Helmke | 5 | Son | — | Louisiana |
| 57 | Oswald Dauterive | 44 | Head | Foreman | Louisiana |
| 58 | Louise Dauterive | 41 | Wife | — | Louisiana |
| 59 | Oswald Jr. Dauterive | 23 | Son | Bell Hop | Louisiana |
| 60 | Melvin Dauterive | 15 | Son | — | Louisiana |
| 61 | William Stricker | 50 | Head | Butcher | Louisiana |
| 62 | Beatrice Stricker | 43 | Wife | — | Louisiana |
| 63 | John Biraben | 60 | Head | — | France |
| 64 | Rose Biraben | 60 | Wife | — | Louisiana |
| 65 | Louise Jacques | 62 | Sister-in-law | — | Louisiana |
| 66 | Frank Jacques | 58 | Brother-in-law | — | Louisiana |
| 67 | Mary Jacques | 25 | Niece | Maid | Louisiana |
| 68 | Earl Ash | 33 | Head | Concrete Finisher | Mississippi |
| 69 | Ethel Ash | 39 | Wife | — | Louisiana |
| 70 | Roscoe Ash | 19 | Son | Delivery Boy | Louisiana |
| 71 | Audrey Ash | 17 | Daughter | — | Louisiana |
| 72 | Earl Jr. Ash | 11 | Son | — | Mississippi |
| 73 | Elizabeth Ash | 10 | Daughter | — | Louisiana |
| 74 | John Hahn THIS PERSON | 60 | Head | Watchman | Louisiana |
| 75 | Ruth Hahn | 54 | Wife | — | Louisiana |
| 76 | Floyd Hahn | 25 | Son | Laborer | Louisiana |
| 77 | Ruth Hahn | 21 | Daughter | Packer | Louisiana |
| 78 | Timothy Finn | 52 | Head | Steam Engineer | Louisiana |
| 79 | Alloween Finn | 40 | Wife | — | Louisiana |
| 80 | Gloria Finn | 15 | Daughter | — | Louisiana |
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)