JS
John Sparks — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Macomb-County, Michigan
Our Model Tree links this John Sparks across the 1930 and 1940 US Censuses in Macomb-County, Michigan (XGBoost, ~Confirmed) — first a son (b.~1920), then head of a 8-person household.
Age 20
b. ~1920
Male
Son
Born: Michigan
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Macomb-County, Michigan |
| Surname | Sparks |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Michigan |
| 1935 Residence (City) | Erin Twp. |
| 1935 Residence (County) | Macomb |
| Additional Details | |
| Occupation | Clerk |
| Industry | Hardware |
| Class of Worker | PW |
| Hours Worked | 0 |
| Income (1939) | 300 |
| Highest Grade | H4 |
| 1935 Residence | Michigan |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
| Occupation | Clerk |
| Township / Ward | Erin Twp |
| Est. Birth Year | ~1920 |
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 John | Age | Birth yr |
|---|---|---|---|---|
| Charles Sparks | Son | — | 16 | ~1924 |
| John Sparks | Son | — | 20 | ~1920 |
| Richard Sparks | Son | — | 7 | ~1933 |
| Dorothy Sparks | Daughter | — | 17 | ~1923 |
| Ernest Sparks | Son | — | 22 | ~1918 |
| Ernest Sparks | Head | — | 46 | ~1894 |
| Edward Sparks | Son | — | 9 | ~1931 |
| Marion Sparks | Spouse | — | 47 | ~1893 |
Census Appearances
1930
Macomb, Michigan
Son, age 10
Macomb, Michigan · implied b. ~1920 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Sparks |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Michigan |
| Father's Birthplace | Kentucky |
| Mother's Birthplace | Michigan |
| Can Read/Write | Yes |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1940
Macomb-County, Michigan
Son, age 20
Macomb-County, Michigan · implied b. ~1920 — 8 household members
| Surname | Sparks |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Michigan |
| 1935 Residence (City) | Erin Twp. |
| 1935 Residence (County) | Macomb |
| Occupation | Clerk |
| Industry | Hardware |
| Class of Worker | PW |
| Hours Worked | 0 |
| Income (1939) | 300 |
| Highest Grade | H4 |
| 1935 Residence | Michigan |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
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 John Sparks across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Sparks
Son · 1940 · age 20 · b. ~1920 · Michigan
★ You are viewing this record
Sibling
Ernest Sparks
Sibling · 1940 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dorothy Sparks
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Richard Sparks
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edward Sparks
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Charles Sparks
Sibling · 1940 · age 16
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 — Macomb-County, Michigan
Open full size
1940 US Federal Census — Macomb-County, Michigan
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01782-00961)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Herman Schultz | 40 | Head | Plumber | Michigan |
| 2 | Edna Schultz | 40 | Wife | Housewife | Michigan |
| 3 | Gordon Schultz | 4 | Son | — | Michigan |
| 4 | Janice Schultz | 2 | Daughter | — | Michigan |
| 5 | Irene Bermeister | 29 | Sister-in-law | Secretary | Michigan |
| 6 | George F. Lentz | 67 | Head | Molder | Michigan |
| 7 | Ida E. Lentz | 66 | Wife | Housewife | Michigan |
| 8 | Fred J. Lindroth | 24 | Head | Driver | Michigan |
| 9 | Mary C. Lindroth | 24 | Wife | Housewife | Ohio |
| 10 | Ellen C. Lindroth | 3 | Daughter | — | Michigan |
| 11 | Benjamin Burke | 66 | Head | Iron Worker | Canada |
| 12 | Jessie H. Burke | 55 | Wife | Housewife | Michigan |
| 13 | Milton C. Burke | 38 | Son | Letter Carrier | Michigan |
| 14 | Ruth J. Burke | 36 | Daughter | Checker | Michigan |
| 15 | Melbourne Burke | 33 | Son | Welder | Michigan |
| 16 | Thelma M. Burke | 12 | Daughter | — | Michigan |
| 17 | Ernest A. Sparks | 46 | Head | Foreman | Kentucky |
| 18 | Marion A. Sparks | 47 | Wife | Housewife | Michigan |
| 19 | Ernest J. Sparks | 22 | Son | Steel Slitter | Michigan |
| 20 | John Sparks THIS PERSON | 20 | Son | Clerk | Michigan |
| 21 | Dorothy Sparks | 17 | Daughter | — | Michigan |
| 22 | Charles A. Sparks | 16 | Son | — | Michigan |
| 23 | Edward C. Sparks | 9 | Son | — | Michigan |
| 24 | Richard P. Sparks | 7 | Son | — | Michigan |
| 25 | Arthur L. Meyer | 44 | Head | Set Up Man | Indiana |
| 26 | Grace M. Meyer | 46 | Wife | Housewife | Michigan |
| 27 | Vincent Kruszczynski | 39 | Head | Driver | New York |
| 28 | Hattie Kruszczynski | 34 | Wife | Housewife | Michigan |
| 29 | Sylvia Kruszczynski | 16 | Daughter | — | Michigan |
| 30 | Vincent Kruszczynski | 15 | Son | — | Michigan |
| 31 | Margaret Kruszczynski | 9 | Daughter | — | Michigan |
| 32 | Marilyn Kruszczynski | 3 | Daughter | — | Michigan |
| 33 | Paul F. Marsh | 32 | Head | Metal Finisher | Ohio |
| 34 | Mary F. Marsh | 27 | Wife | Housewife | Missouri |
| 35 | Alice L. Marsh | 9 | Daughter | — | Ohio |
| 36 | Agnes G. Marsh | 7 | Daughter | — | Michigan |
| 37 | Allan A. Marsh | 6 | Son | — | Michigan |
| 38 | Robert L. Marsh | 4 | Son | — | Michigan |
| 39 | Frank Vanden Brooks | 32 | Head | Plasterer | Michigan |
| 40 | Mary Vanden Brooks | 23 | Wife | Housewife | Michigan |
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)