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James Kirby — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Vigo-County, Indiana
Our Model Tree links this James Kirby across the 1930 and 1940 US Censuses in Vigo-County, Indiana (XGBoost, ~Confirmed) — first a son (b.~1929), then head of a 8-person household.
Age 11
b. ~1929
Male
Son
Born: Indiana
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Vigo-County, Indiana |
| Surname | Kirby |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Indiana |
| 1935 Residence (City) | Terre Haute |
| 1935 Residence (County) | Vigo |
| Additional Details | |
| Highest Grade | No 5 |
| 1935 Residence | Same place |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
| Township / Ward | Terre Haute |
| Est. Birth Year | ~1929 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| Harry Kirby | Son | — | 12 | ~1928 |
| Blaine Kirby | Head | — | 36 | ~1904 |
| Hazel Kirby | Spouse | — | 33 | ~1907 |
| Maruba Kirby | Son | — | 2 | ~1938 |
| Wayne Kirby | Son | — | 6 | ~1934 |
| James Kirby | Son | — | 11 | ~1929 |
| Nellie Kirby | Daughter | — | 9 | ~1931 |
| Hugh Kirby | Son | — | ~1940 |
Census Appearances
1930
Vigo, Indiana
Son, age 1
Vigo, Indiana · implied b. ~1929 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kirby |
| Given Name | James |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Indiana |
| Occupation | none |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1940
Vigo-County, Indiana
Son, age 11
Vigo-County, Indiana · implied b. ~1929 — 8 household members
| Surname | Kirby |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Indiana |
| 1935 Residence (City) | Terre Haute |
| 1935 Residence (County) | Vigo |
| Highest Grade | No 5 |
| 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 James Kirby across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
James Kirby
Son · 1940 · age 11 · b. ~1929 · Indiana
★ You are viewing this record
Sibling
Harry Kirby
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Hugh Kirby
Sibling · 1940 · age
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Nellie Kirby
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Maruba Kirby
Sibling · 1940 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Wayne Kirby
Sibling · 1940 · age 6
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 — Vigo-County, Indiana
Open full size
1940 US Federal Census — Vigo-County, Indiana
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01104-00600)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Vale Cordelia Vale | 67 | Wife | — | Indiana |
| 42 | Ruth Vale | 32 | Daughter | Inspector | Indiana |
| 43 | Sheider Lilly Vale | 74 | Head | — | Illinois |
| 44 | Harvey Louis Wade | 41 | Head | Fireman | Indiana |
| 45 | Lillian Wade | 38 | Wife | — | Kentucky |
| 46 | Patricia Wade | 17 | Daughter | — | Indiana |
| 47 | William Wade | 11 | Son | — | Indiana |
| 48 | Victor Wade | 7 | Son | — | Indiana |
| 49 | Harley Pratt | 33 | Head | Hooker | Indiana |
| 50 | Goldie Pratt | 35 | Wife | Wrapper | Indiana |
| 51 | William Cherepko | 29 | Head | Inspector | Indiana |
| 52 | Sharon Cherepko | 28 | Wife | — | Indiana |
| 53 | William Cherepko | 9 | Son | — | Indiana |
| 54 | Paul Cherepko | 7 | Son | — | Indiana |
| 55 | Sharon Cherepko | 1 | Daughter | — | Indiana |
| 56 | Blaine Kirby | 36 | Head | Labor | Indiana |
| 57 | Hazel Kirby | 33 | Wife | — | Indiana |
| 58 | Harry Kirby | 12 | Son | — | Indiana |
| 59 | James Kirby THIS PERSON | 11 | Son | — | Indiana |
| 60 | Nellie Kirby | 9 | Daughter | — | Indiana |
| 61 | Wayne Kirby | 6 | Son | — | Indiana |
| 62 | Maruba Kirby | 2 | Son | — | Indiana |
| 63 | Hugh Kirby | 0 | Son | — | Indiana |
| 64 | Charles Britton | 50 | Head | Moulder | Indiana |
| 65 | Ella Britton | 49 | Wife | — | Kansas |
| 66 | Clifford Britton | 21 | Son | Shipping Clerk | Indiana |
| 67 | Betty Britton | 17 | Daughter | — | Indiana |
| 68 | Wilma Britton | 15 | Daughter | — | Indiana |
| 69 | Joanna Britton | 13 | Daughter | — | Indiana |
| 70 | Charles Britton | 10 | Son | — | Indiana |
| 71 | Charlotte Britton | 10 | Daughter | — | Indiana |
| 72 | Robert Britton | 9 | Son | — | Indiana |
| 73 | Billy Britton | 7 | Son | — | Indiana |
| 74 | Clarence E. Sherman | 49 | Head | Brakeman | Indiana |
| 75 | Zella Sherman | 34 | Wife | — | Kentucky |
| 76 | Chester Fields | 32 | Head | Farming | Illinois |
| 77 | Maude Fields | 34 | Wife | — | Illinois |
| 78 | Robert William Fields | 18 | Son | Labor | Illinois |
| 79 | Ross James Fields | 13 | Step son | — | Indiana |
| 80 | Sherman Williams | 25 | Brother in law | Labor | Illinois |
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)