JI
John Irwin — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Calcasieu-County, Louisiana
Our Model Tree links this John Irwin across the 1930 and 1940 US Censuses in Calcasieu-County, Louisiana (XGBoost, ~Confirmed) — first a head (b.~1891), then head of a 10-person household.
Age 49
b. ~1891
Male
Head
Born: Missouri
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Calcasieu-County, Louisiana |
| Surname | Irwin |
| Given Name | John C |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 49 |
| Marital Status | Married |
| Birthplace | Missouri |
| 1935 Residence (City) | Ward 4 |
| 1935 Residence (County) | Calcasieu |
| Additional Details | |
| Occupation | Machinist |
| Industry | Steam Railroad |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 2270 |
| Highest Grade | No 7 |
| 1935 Residence | Same House |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
| Occupation | Machinist |
| Township / Ward | Ward 4 |
| Est. Birth Year | ~1891 |
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 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Gerald Irwin | Son | — | 12 | ~1928 |
| Geraldine Irwin | Daughter | — | 12 | ~1928 |
| Ruby Irwin | Daughter | — | 18 | ~1922 |
| William Irwin | Son | — | 23 | ~1917 |
| Ruby Irwin | Spouse | — | 47 | ~1893 |
| John Irwin | Head | — | 49 | ~1891 |
| Patrick Irwin | Son | — | 20 | ~1920 |
| Richard Irwin | Son | — | 9 | ~1931 |
| Tucker Irwin | Son | — | 16 | ~1924 |
| Lemuel Irwin | Son | — | 14 | ~1926 |
Census Appearances
1930
Calcasieu, Louisiana
Head, age 39
Calcasieu, Louisiana · implied b. ~1891 — 12 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Irwin |
| Given Name | John C |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 39 |
| Marital Status | Married |
| Birthplace | Missouri |
| Age at First Marriage | 20 |
| Father's Birthplace | Missouri |
| Mother's Birthplace | Missouri |
| Occupation | Round House Foreman |
| Industry | Railroad Shop |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 3000 |
| Radio Set | R |
| Veteran | No |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
1940
Calcasieu-County, Louisiana
Head, age 49
Calcasieu-County, Louisiana · implied b. ~1891 — 10 household members
| Surname | Irwin |
| Given Name | John C |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 49 |
| Marital Status | Married |
| Birthplace | Missouri |
| 1935 Residence (City) | Ward 4 |
| 1935 Residence (County) | Calcasieu |
| Occupation | Machinist |
| Industry | Steam Railroad |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 2270 |
| Highest Grade | No 7 |
| 1935 Residence | Same House |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
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 Irwin across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Irwin
Head · 1940 · age 49 · b. ~1891 · 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 — Calcasieu-County, Louisiana
Open full size
1940 US Federal Census — Calcasieu-County, Louisiana
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01391-00418)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | John C Irwin THIS PERSON | 49 | Head | Machinist | Missouri |
| 42 | Ruby Irwin | 47 | Wife | — | Texas |
| 43 | William Arthur Irwin | 23 | Son | Machinist | Louisiana |
| 44 | Patrick L Irwin | 20 | Son | Presser | Louisiana |
| 45 | Ruby Irwin | 18 | Daughter | — | Texas |
| 46 | Tucker Irwin | 16 | Son | — | Texas |
| 47 | Lemuel Irwin | 14 | Son | — | Texas |
| 48 | Gerald Irwin | 12 | Son | — | Louisiana |
| 49 | Geraldine Irwin | 12 | Daughter | — | Louisiana |
| 50 | Richard Irwin | 9 | Son | — | Louisiana |
| 51 | Arthur R Feekens | 46 | Head | Pipe Fitter | Louisiana |
| 52 | Leona Feekens | 39 | Wife | — | Louisiana |
| 53 | Marie Feekens | 15 | Daughter | — | Louisiana |
| 54 | Larie Feekens | 13 | Daughter | — | Louisiana |
| 55 | Joseph R Clark | 49 | Head | Plant Man | Texas |
| 56 | Clara Clark | 42 | Wife | — | Louisiana |
| 57 | Joseph Jr Clark | 17 | Son | — | Louisiana |
| 58 | Kenneth Clark | 14 | Son | — | Louisiana |
| 59 | Mary Catherine Clark | 12 | Daughter | — | Louisiana |
| 60 | Clara L Clark | 7 | Daughter | — | Louisiana |
| 61 | Charlotte Clark | 4 | Daughter | — | Louisiana |
| 62 | John S Ellis | 42 | Head | Coppersmith | Louisiana |
| 63 | Annie Ellis | 35 | Wife | — | Louisiana |
| 64 | Harvey Ellis | 14 | Son | — | Louisiana |
| 65 | Aldin Ellis | 9 | Son | — | Louisiana |
| 66 | Jennie Lee Ellis | 6 | Daughter | — | Louisiana |
| 67 | Evelyn Ellis | 3 | Daughter | — | Louisiana |
| 68 | James D Hinder | 33 | Head | Mechanic Helper | Louisiana |
| 69 | Lorine Hinder | 28 | Wife | — | Louisiana |
| 70 | R J (Julial) Hinder | 12 | Son | — | Louisiana |
| 71 | Raymond Hinder | 10 | Son | — | Louisiana |
| 72 | Marilyn Hinder | 10 | Daughter | — | Louisiana |
| 73 | Jimmie Hinder | 6 | Son | — | Louisiana |
| 74 | Wilburn Hinder | 5 | Son | — | Louisiana |
| 75 | Lucy Ellis | 70 | Head | — | Texas |
| 76 | Phillip Royer | 34 | Head | Barber | Louisiana |
| 77 | Nannie Royer | 32 | Wife | — | Louisiana |
| 78 | Kenneth R Royer | 12 | Son | — | Louisiana |
| 79 | Hal Paula Royer | 8 | Son | — | Louisiana |
| 80 | Sam B Ellis | 40 | Head | Boiler Maker | 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)