JS
James Sparks — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Rock-County, Wisconsin
Our Model Tree links this James Sparks across the 1930 and 1940 US Censuses in Rock-County, Wisconsin (XGBoost, ~Confirmed) — first a head (b.~1886), then head of a 8-person household.
Age 54
b. ~1886
Male
Head
Born: Kentucky
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Rock-County, Wisconsin |
| Surname | Sparks |
| Given Name | James |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 54 |
| Marital Status | Married |
| Birthplace | Kentucky |
| 1935 Residence (City) | Clinton |
| 1935 Residence (County) | Rock Co |
| Additional Details | |
| Occupation | Edge Trimmer |
| Industry | Shoe Factory |
| Class of Worker | PW |
| Hours Worked | 36 |
| Income (1939) | 0 |
| Highest Grade | No 4 |
| 1935 Residence | Wisconsin |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
| Occupation | Edge Trimmer |
| Township / Ward | Clinton |
| Est. Birth Year | ~1886 |
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 |
|---|---|---|---|---|
| James Sparks | Head | — | 54 | ~1886 |
| Harry Sparks | Son | — | 16 | ~1924 |
| Ida Sparks | Daughter | — | 17 | ~1923 |
| Earl Sparks | Son | — | 14 | ~1926 |
| Walter Sparks | Son | — | 29 | ~1911 |
| Charles Sparks | Son | — | 13 | ~1927 |
| Harriet Sparks | Spouse | — | 41 | ~1899 |
| Clarence Sparks | Son | — | 18 | ~1922 |
Census Appearances
1930
Rock, Wisconsin
Head, age 44
Rock, Wisconsin · implied b. ~1886 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Sparks |
| Given Name | James |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 44 |
| Marital Status | Married |
| Birthplace | Kentucky |
| Age at First Marriage | 21 |
| Father's Birthplace | Kentucky |
| Mother's Birthplace | Kentucky |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 10 |
| Veteran | No |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
1940
Rock-County, Wisconsin
Head, age 54
Rock-County, Wisconsin · implied b. ~1886 — 8 household members
| Surname | Sparks |
| Given Name | James |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 54 |
| Marital Status | Married |
| Birthplace | Kentucky |
| 1935 Residence (City) | Clinton |
| 1935 Residence (County) | Rock Co |
| Occupation | Edge Trimmer |
| Industry | Shoe Factory |
| Class of Worker | PW |
| Hours Worked | 36 |
| Income (1939) | 0 |
| Highest Grade | No 4 |
| 1935 Residence | Wisconsin |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
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 Sparks across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
James Sparks
Head · 1940 · age 54 · b. ~1886 · Wisconsin
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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 — Rock-County, Wisconsin
Open full size
1940 US Federal Census — Rock-County, Wisconsin
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-04519-00859)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Mary Uehling | 50 | Wife | — | Germany |
| 42 | John Uehling | 17 | Son | — | Wisconsin |
| 43 | Stanley Miner | 53 | Head | Farm Laborer | Iowa |
| 44 | Anna Miner | 52 | Wife | — | Wisconsin |
| 45 | Theodore Roedel | 48 | Head | Farmer | Wisconsin |
| 46 | Bertha Roedel | 44 | Wife | — | Wisconsin |
| 47 | Jake Cochran | 50 | Head | Farmer | Holland |
| 48 | Agnes Cochran | 47 | Wife | — | Holland |
| 49 | Gertie Cochran | 19 | Daughter | — | South Dakota |
| 50 | Alice Cochran | 18 | Daughter | — | South Dakota |
| 51 | Joe Cochran | 16 | Son | Farm Laborer | South Dakota |
| 52 | Henry Cochran | 14 | Son | Farm Laborer | South Dakota |
| 53 | Jeanette Cochran | 12 | Daughter | — | South Dakota |
| 54 | Ralph Cochran | 10 | Son | — | South Dakota |
| 55 | Joan Cochran | 9 | Daughter | — | South Dakota |
| 56 | Ivan Graham | 33 | Head | Farmer | Illinois |
| 57 | Verna Graham | 36 | Wife | — | Iowa |
| 58 | Russell Graham | 14 | Son | — | Illinois |
| 59 | Arlene Graham | 12 | Daughter | — | Illinois |
| 60 | Gerald Graham | 7 | Son | — | Illinois |
| 61 | Elaine Graham | 3 | Daughter | — | Illinois |
| 62 | Richard Graham | 1 | Son | 0 | Wisconsin |
| 63 | John H. Halverson | 38 | Head | Farmer | Wisconsin |
| 64 | Florence Halverson | 37 | Wife | — | Wisconsin |
| 65 | Ruth Halverson | 18 | Daughter | — | Wisconsin |
| 66 | Laverne Halverson | 16 | Daughter | — | Wisconsin |
| 67 | Arthur Beaver | 45 | Head | Farmer | Iowa |
| 68 | Rose Beaver | 41 | Wife | — | Wisconsin |
| 69 | Herbert Beaver | 17 | Son | Farmer | Wisconsin |
| 70 | Eleanor Beaver | 14 | Daughter | — | Wisconsin |
| 71 | Robert Beaver | 13 | Son | — | Wisconsin |
| 72 | Myron Beaver | 2 | Son | 0 | Wisconsin |
| 73 | James Sparks THIS PERSON | 54 | Head | Edge Trimmer | Kentucky |
| 74 | Harriet Sparks | 41 | Wife | — | Wisconsin |
| 75 | Walter Sparks | 29 | Son | Farm Laborer | Wisconsin |
| 76 | Clarence Sparks | 18 | Son | Usher | Wisconsin |
| 77 | Ida May Sparks | 17 | Daughter | Usher | Wisconsin |
| 78 | Harry Sparks | 16 | Son | Part Time Clerk | Wisconsin |
| 79 | Earl Sparks | 14 | Son | — | Wisconsin |
| 80 | Charles Sparks | 13 | Son | — | Wisconsin |
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)