JI
James Irwin — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Hancock-County, Ohio
Our Model Tree links this James Irwin across the 1930 and 1940 US Censuses in Hancock-County, Ohio (XGBoost, ~Confirmed) — first a son (b.~1922), then head of a 6-person household.
Age 18
b. ~1922
Male
Son
Born: Ohio
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Hancock-County, Ohio |
| Surname | Irwin |
| Given Name | James |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Orange Twp |
| 1935 Residence (County) | Hancock |
| Additional Details | |
| Occupation | Laborer |
| Industry | Farm |
| Class of Worker | NP |
| Hours Worked | 40 |
| Income (1939) | 888 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
| Occupation | Laborer |
| Township / Ward | Orange Twp |
| Est. Birth Year | ~1922 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| James Irwin | Son | — | 18 | ~1922 |
| Robert Irwin | Son | — | 16 | ~1924 |
| Richard Irwin | Son | — | 11 | ~1929 |
| Lida Irwin | Spouse | — | 48 | ~1892 |
| Jack Irwin | Son | — | 7 | ~1933 |
| Ivan Irwin | Head | — | 47 | ~1893 |
Census Appearances
1930
Hancock, Ohio
Son, age 8
Hancock, Ohio · implied b. ~1922 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Irwin |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 8 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1940
Hancock-County, Ohio
Son, age 18
Hancock-County, Ohio · implied b. ~1922 — 6 household members
| Surname | Irwin |
| Given Name | James |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Orange Twp |
| 1935 Residence (County) | Hancock |
| Occupation | Laborer |
| Industry | Farm |
| Class of Worker | NP |
| Hours Worked | 40 |
| Income (1939) | 888 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
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 James Irwin across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
James Irwin
Son · 1940 · age 18 · b. ~1922 · Ohio
★ You are viewing this record
Sibling
Robert Irwin
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Jack Irwin
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Richard Irwin
Sibling · 1940 · age 11
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
1940 US Federal Census — Hancock-County, Ohio
Open full size
1940 US Federal Census — Hancock-County, Ohio
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03081-00920)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Patricia Jean Ryan | 5 | daughter | — | Ohio |
| 2 | Ruth Ellen Ryan | 15 | daughter | — | Ohio |
| 3 | John Ryan | 76 | son | — | New York |
| 4 | Minnie Ferguson | 69 | Head | Farmer | Ohio |
| 5 | Lemon Henry | 50 | Head | Farmer | Ohio |
| 6 | Phoebe Henry | 50 | wife | — | Ohio |
| 7 | Carl Haley | 42 | Head | Farmer | Ohio |
| 8 | Liona Haley | 35 | wife | — | Ohio |
| 9 | Glen Haley | 11 | son | — | Ohio |
| 10 | Clyde Haley | 10 | son | — | Ohio |
| 11 | Lee Morrison | 53 | Head | Farmer | Ohio |
| 12 | Ethel Morrison | 51 | wife | — | Ohio |
| 13 | Dow Seales | 57 | Head | Farmer | Ohio |
| 14 | Gerald Seales | 29 | son | Farmer | Ohio |
| 15 | Allen Seales | 16 | son | — | Ohio |
| 16 | Ivan Irwin | 47 | Head | Farmer | Ohio |
| 17 | Lida Irwin | 48 | wife | — | Ohio |
| 18 | James Irwin THIS PERSON | 18 | son | Laborer | Ohio |
| 19 | Robert Irwin | 16 | son | — | Ohio |
| 20 | Richard Irwin | 11 | son | — | Ohio |
| 21 | Jack Irwin | 7 | son | — | Ohio |
| 22 | Charles P Hartman | 60 | Head | Farmer | Ohio |
| 23 | Rosie Hartman | 54 | wife | — | Ohio |
| 24 | Jay Hartman | 33 | son | Laborer | Ohio |
| 25 | Ivan Montgomery | 32 | Head | Farmer | Ohio |
| 26 | Helen Montgomery | 31 | wife | — | Ohio |
| 27 | Jean Montgomery | 6 | daughter | — | Ohio |
| 28 | Allan J Montgomery | 4 | son | — | Ohio |
| 29 | Henry Hilty | 52 | Head | Farmer | Ohio |
| 30 | Florcha Hilty | 52 | wife | — | Ohio |
| 31 | Rosann Hilty | 16 | daughter | — | Ohio |
| 32 | Clyde E Klingler | 51 | Head | Farmer | Ohio |
| 33 | Grace M Klingler | 51 | wife | — | Ohio |
| 34 | Clyde E Jr Klingler | 18 | son | — | Ohio |
| 35 | Charles Montgomery | 46 | Head | Farmer | Ohio |
| 36 | Lenore Montgomery | 42 | wife | — | Ohio |
| 37 | Charles Jr Montgomery | 18 | son | — | Ohio |
| 38 | Lilyette Montgomery | 2 | daughter | — | Ohio |
| 39 | Eva Montgomery | 77 | Head | — | Ohio |
| 40 | Ino M Dunbar | 37 | Head | Farmer | Ohio |
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)