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James Peterson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Lake-County, Indiana
Our Model Tree links this James Peterson across the 1930 and 1940 US Censuses in Lake-County, Indiana (XGBoost, ~Confirmed) — first a son (b.~1923), then head of a 8-person household.
Age 17
b. ~1923
Male
Son
Born: Indiana
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Lake-County, Indiana |
| Surname | Peterson |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Indiana |
| 1935 Residence (City) | Hobart Twp. |
| 1935 Residence (County) | Lake |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
| Township / Ward | Hobart Twp |
| Est. Birth Year | ~1923 |
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 |
|---|---|---|---|---|
| Jane Peterson | Daughter | — | 2 | ~1938 |
| John Peterson | Head | — | 58 | ~1882 |
| Joseph Peterson | Son | — | ~1940 | |
| John Peterson | Son | — | 6 | ~1934 |
| John Peterson | Son | — | 13 | ~1927 |
| James Peterson | Son | — | 17 | ~1923 |
| Lawrence Peterson | Son | — | 11 | ~1929 |
| Sally Peterson | Spouse | — | 33 | ~1907 |
Census Appearances
1930
Lake, Indiana
Son, age 7
Lake, Indiana · implied b. ~1923 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Peterson |
| Given Name | James |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Indiana |
| Occupation | none |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1940
Lake-County, Indiana
Son, age 17
Lake-County, Indiana · implied b. ~1923 — 8 household members
| Surname | Peterson |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Indiana |
| 1935 Residence (City) | Hobart Twp. |
| 1935 Residence (County) | Lake |
| Income (1939) | 0 |
| Highest Grade | 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 James Peterson across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
James Peterson
Son · 1940 · age 17 · b. ~1923 · Indiana
★ You are viewing this record
Sibling
Jane Peterson
Sibling · 1940 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lawrence Peterson
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Peterson
Sibling · 1940 · age
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Peterson
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Peterson
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 — Lake-County, Indiana
Open full size
1940 US Federal Census — Lake-County, Indiana
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01064-00877)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Elwin Trail | 20 | Lodger | Truck Driver | Tennessee |
| 2 | Everett Smith | 40 | Head | — | Kentucky |
| 3 | Elsie R. Smith | 38 | Wife | — | Ohio |
| 4 | Edward S. Lockhart | 42 | Head | Welder | Alabama |
| 5 | Edna Lockhart | 42 | Wife | — | Alabama |
| 6 | Mary E. Lockhart | 11 | Daughter | — | Indiana |
| 7 | Bonnie H. Lockhart | 8 | Daughter | — | Indiana |
| 8 | Frank Lockhart | 4 | Son | — | Indiana |
| 9 | Steve Cozovic | 41 | Head | Handy Man | Austria |
| 10 | Albert Dovella | 35 | Head | Crane Operat. | Pennsylvania |
| 11 | Dorothy D. Dovella | 25 | Wife | — | Pennsylvania |
| 12 | Margaret Dovella | 11 | Daughter | — | Pennsylvania |
| 13 | Alberta Dovella | 9 | Daughter | — | Pennsylvania |
| 14 | John Peterson | 58 | Head | Heater | Norway |
| 15 | Sally Peterson | 33 | Wife | — | Kentucky |
| 16 | James Peterson THIS PERSON | 17 | Son | — | Indiana |
| 17 | John Peterson | 13 | Son | — | Indiana |
| 18 | Lawrence Peterson | 11 | Son | — | Indiana |
| 19 | John Jr. Peterson | 6 | Son | — | Indiana |
| 20 | Jane Peterson | 2 | Daughter | — | Indiana |
| 21 | Joseph Peterson | 0 | Son | — | Indiana |
| 22 | Walter Laschala | 38 | Head | Tractor Oper. | Poland |
| 23 | Bernice Laschala | 32 | Wife | — | Indiana |
| 24 | Melvin Laschala | 13 | Son | — | Indiana |
| 25 | Donald Laschala | 9 | Son | — | Indiana |
| 26 | Barbara Laschala | 7 | Daughter | — | Indiana |
| 27 | Patricia Laschala | 5 | Daughter | — | Indiana |
| 28 | Phylis Laschala | 4 | Daughter | — | Indiana |
| 29 | Earl Hinckley | 40 | Head | Handy Man | Wisconsin |
| 30 | Bessie Hinckley | 37 | Wife | — | W. Virginia |
| 31 | Thomas E. Hinckley | 20 | Son | New Worker | W. Virginia |
| 32 | William Hinckley | 18 | Son | New Worker | Ohio |
| 33 | Ella Marie Hinckley | 16 | Daughter | — | Ohio |
| 34 | John C. Hinckley | 13 | Son | — | Indiana |
| 35 | Gertrude Hinckley | 11 | Daughter | — | Indiana |
| 36 | Robert Nash | 20 | Nephew | Handy Man | West Virginia |
| 37 | Evelyn Mcelfresh | 27 | Sister-in-law | — | W. Virginia |
| 38 | Henry L. Mcelfresh | 8 | Nephew | — | Indiana |
| 39 | Frank Laginaw | 33 | Head | Motor Inspector | Pennsylvania |
| 40 | Carmella Laginaw | 27 | Wife | — | 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)