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William Sparks — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Campbell-County, Kentucky
Our Model Tree links this William Sparks across the 1920, 1930 and 1940 US Censuses in Campbell-County, Kentucky (XGBoost, ~Confirmed) — first a head (b.~1865), then head of a 4-person household.
Age 75
b. ~1865
Male
Head
Born: Kentucky
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Campbell-County, Kentucky |
| Surname | Sparks |
| Given Name | William |
| Relationship to Head | head |
| Sex | M |
| Color / Race | White |
| Age | 75 |
| Marital Status | Married |
| Birthplace | Kentucky |
| 1935 Residence (City) | Dayton City |
| 1935 Residence (County) | Campbell |
| Additional Details | |
| Industry | laborer |
| Class of Worker | machinist co |
| Highest Grade | No 2 |
| 1935 Residence | Same House |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
| Township / Ward | Dayton City |
| Est. Birth Year | ~1865 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| William Sparks | Head | — | 75 | ~1865 |
| Blanche Sparks | Spouse | — | 48 | ~1892 |
| Eugene Sparks | Son | — | 7 | ~1933 |
| Robert Sparks | Son | — | 9 | ~1931 |
Census Appearances
1920
Campbell, Kentucky
Head, age 54
Campbell, Kentucky · implied b. ~1866 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Sparks |
| Given Name | William |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 54 |
| Marital Status | Divorced |
| Birthplace | Kentucky |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Occupation | Iron molder |
| Industry | Iron Foundry |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | German |
| Home Owned/Rented | R |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
1930
Campbell, Kentucky
Head, age 65
Campbell, Kentucky · implied b. ~1865 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Sparks |
| Given Name | William |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 65 |
| Marital Status | Married |
| Birthplace | Kentucky |
| Age at First Marriage | 55 |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Occupation | Casting Chipper |
| Industry | Tool Works |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 6000 |
| Radio Set | R |
| Veteran | No |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
1940
Campbell-County, Kentucky
Head, age 75
Campbell-County, Kentucky · implied b. ~1865 — 4 household members
| Surname | Sparks |
| Given Name | William |
| Relationship to Head | head |
| Sex | M |
| Color / Race | White |
| Age | 75 |
| Marital Status | Married |
| Birthplace | Kentucky |
| 1935 Residence (City) | Dayton City |
| 1935 Residence (County) | Campbell |
| Industry | laborer |
| Class of Worker | machinist co |
| Highest Grade | No 2 |
| 1935 Residence | Same House |
| 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 William Sparks across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
William Sparks
Head · 1940 · age 75 · b. ~1865 · Kentucky
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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 — Campbell-County, Kentucky
Open full size
1940 US Federal Census — Campbell-County, Kentucky
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01290-00290)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Harry J. Cook | 40 | head | Machinist | Ohio |
| 2 | Rebecca Cook | 39 | wife | — | Ohio |
| 3 | Audrey Cook | 15 | daughter | — | Kentucky |
| 4 | Henry Muckback | 53 | head | Truck Driver | Ohio |
| 5 | Minnie Muckback | 54 | wife | — | West Virginia |
| 6 | Richard Bushink | 25 | step-son | Painter | West Virginia |
| 7 | Viola Bushink | 10 | step-daughter | — | Kentucky |
| 8 | Bertha Parks | 68 | head | — | Ohio |
| 9 | Laura Jean Reese | 32 | daughter | Clerk | Ohio |
| 10 | Virginia Sherman | 16 | grand-daughter | Office Work | Kentucky |
| 11 | Marjorie Sherman | 14 | grand-daughter | — | Kentucky |
| 12 | William Sparks THIS PERSON | 75 | head | — | Kentucky |
| 13 | Blanche Sparks | 48 | wife | — | Kentucky |
| 14 | Robert W. Sparks | 9 | son | — | Kentucky |
| 15 | Eugene V. Sparks | 7 | son | — | Kentucky |
| 16 | Michael Hoh | 41 | head | Gold Plater | Kentucky |
| 17 | Edith Hoh | 35 | wife | — | Kentucky |
| 18 | Margaret Hoh | 17 | daughter | — | Kentucky |
| 19 | Robert Hoh | 12 | son | — | Kentucky |
| 20 | George Doel | 28 | head | Houseman | Ohio |
| 21 | Ina Doel | 22 | wife | — | Kentucky |
| 22 | Richard Gunning | 60 | head | Night Watchman | Kentucky |
| 23 | Xavier Gunning | 32 | son | Coffin Maker | Kentucky |
| 24 | Gunning | None | — | — | — |
| 25 | Gunning | None | — | — | — |
| 26 | Thomas Cotter | 51 | head | Hatter | Ft. Gibson, Indian Terr. |
| 27 | Katherine Cotter | 43 | wife | — | Ohio |
| 28 | Thomas J. Cotter | 17 | son | — | Ohio |
| 29 | Robert Cotter | 14 | son | — | Ohio |
| 30 | William O. James | 38 | head | Crane Operator | Kentucky |
| 31 | Effie James | 38 | wife | — | Kentucky |
| 32 | Wilma James | 13 | daughter | — | Ohio |
| 33 | Lawrence Smith | 22 | head | Coffee Dumper | Kentucky |
| 34 | Louise Smith | 19 | wife | — | Kentucky |
| 35 | Sandra Lou Smith | 0 | daughter | — | Kentucky |
| 36 | Rose Baumann | 56 | mother-in-law | — | Kentucky |
| 37 | Harold Vonderhaar | 33 | head | Machinist | Kentucky |
| 38 | Katherine Vonderhaar | 33 | wife | — | Ohio |
| 39 | Marlene Vonderhaar | 5 | daughter | — | Kentucky |
| 40 | Kate Vonderhaar | 63 | mother | — | Kentucky |
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)