JI
John Irwin — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Sullivan-County, Indiana
Our Model Tree links this John Irwin across the 1930 and 1940 US Censuses in Sullivan-County, Indiana (XGBoost, ~Confirmed) — first a head (b.~1889), then head of a 7-person household.
Age 51
b. ~1889
Male
Head
Born: Indiana
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Sullivan-County, Indiana |
| Surname | Irwin |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 51 |
| Marital Status | Married |
| Birthplace | Indiana |
| 1935 Residence (City) | Shelburn Town |
| 1935 Residence (County) | Sullivan |
| Additional Details | |
| Occupation | Laborer |
| Industry | roadwork |
| Class of Worker | GW |
| Hours Worked | 40 |
| Income (1939) | 504 |
| Highest Grade | No 8 |
| 1935 Residence | Same Place |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
| Occupation | Laborer |
| Township / Ward | Shelburn Town |
| Est. Birth Year | ~1889 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Lorraine Irwin | Daughter | — | 2 | ~1938 |
| John Irwin | Head | — | 51 | ~1889 |
| Ruth Irwin | Daughter | — | 19 | ~1921 |
| Phyllis Irwin | Daughter | — | 13 | ~1927 |
| Marjorie Irwin | Daughter | — | 16 | ~1924 |
| Ocie Irwin | Spouse | — | 41 | ~1899 |
| Anna Irwin | Daughter | — | 10 | ~1930 |
Census Appearances
1930
Sullivan, Indiana
Head, age 41
Sullivan, Indiana · implied b. ~1889 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Irwin |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 41 |
| Marital Status | Married |
| Birthplace | Indiana |
| Age at First Marriage | 24 |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Indiana |
| Occupation | Laborer |
| Industry | Coal mine |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 7 |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1940
Sullivan-County, Indiana
Head, age 51
Sullivan-County, Indiana · implied b. ~1889 — 7 household members
| Surname | Irwin |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 51 |
| Marital Status | Married |
| Birthplace | Indiana |
| 1935 Residence (City) | Shelburn Town |
| 1935 Residence (County) | Sullivan |
| Occupation | Laborer |
| Industry | roadwork |
| Class of Worker | GW |
| Hours Worked | 40 |
| Income (1939) | 504 |
| Highest Grade | No 8 |
| 1935 Residence | Same Place |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
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 51 · b. ~1889 · Indiana
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Sullivan-County, Indiana
Open full size
1940 US Federal Census — Sullivan-County, Indiana
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01097-00177)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Garnetta Lofton | 31 | Wife | — | Indiana |
| 42 | Patty Darlene Lofton | 9 | Daughter | — | Indiana |
| 43 | Porter Don Lofton | 7 | Son | — | Indiana |
| 44 | Betty Maxine Lofton | 4 | Daughter | — | Indiana |
| 45 | Gerry Dean Lofton | 3 | Son | — | Indiana |
| 46 | Ray Howard | 46 | Head | Laborer | Kentucky |
| 47 | Myrtle P. Howard | 44 | Wife | — | Kentucky |
| 48 | Elmer Howard | 19 | Son | Laborer | Indiana |
| 49 | Benjamin Wade Howard | 16 | Son | New Worker | Indiana |
| 50 | Harold Howard | 15 | Son | — | Indiana |
| 51 | Herschell Howard | 7 | Son | — | Indiana |
| 52 | Geneve Rose Howard | 4 | Daughter | — | Indiana |
| 53 | Donald Wayne Howard | 2 | Son | — | Indiana |
| 54 | Marilyn Louise Howard | 0 | Daughter | — | Indiana |
| 55 | George Robert Howard | 1 | Son | — | Indiana |
| 56 | Marvin Lofton | 52 | Head | Miner | Indiana |
| 57 | Jessie R. Lofton | 48 | Wife | New Worker | Indiana |
| 58 | William Lofton | 18 | Son | Laborer | Indiana |
| 59 | Dorothy Irene Lofton | 17 | Daughter | — | Indiana |
| 60 | Violeta Lofton | 11 | Daughter | — | Indiana |
| 61 | John Irwin THIS PERSON | 51 | Head | Laborer | Indiana |
| 62 | Ocie Irwin | 41 | Wife | — | Indiana |
| 63 | Ruth Irwin | 19 | Daughter | Housekeeper | Indiana |
| 64 | Marjorie Irwin | 16 | Daughter | — | Indiana |
| 65 | Phyllis Irwin | 13 | Daughter | — | Indiana |
| 66 | Anna Lou Irwin | 10 | Daughter | — | Indiana |
| 67 | Lorraine Irwin | 2 | Daughter | — | Indiana |
| 68 | Isabell Cruse | 46 | Head | — | Indiana |
| 69 | Lester Ivan Cruse | 16 | Son | — | Indiana |
| 70 | Emma Viel Cruse | 14 | Daughter | — | Indiana |
| 71 | Charles Ellsworth Cruse | 11 | Son | — | Indiana |
| 72 | Isabell Elizabeth Cruse | 8 | Daughter | — | Indiana |
| 73 | Alfred Rigby | 54 | Head | Miner | England |
| 74 | Isabella Rigby | 54 | Wife | — | England |
| 75 | Warren Grummery | 22 | Head | Clerk | Indiana |
| 76 | Frieda Grummery | 18 | Wife | Clerk | Indiana |
| 77 | Bert Morris | 59 | Head | Old Pensioner | Indiana |
| 78 | Nancy Morris | 55 | Wife | — | Indiana |
| 79 | Martha E. Courtney | 64 | Wife | — | Indiana |
| 80 | Joseph Courtney | 68 | Head | — | Indiana |
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)