JD
John Decker — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Muskegon-County, Michigan
Our Model Tree links this John Decker across the 1930 and 1940 US Censuses in Muskegon-County, Michigan (XGBoost, ~Confirmed) — first a son (b.~1919), then head of a 7-person household.
Age 21
b. ~1919
Male
Son
Born: Michigan
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Muskegon-County, Michigan |
| Surname | Decker |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Michigan |
| 1935 Residence (City) | Muskegon City |
| 1935 Residence (County) | Muskegon |
| Additional Details | |
| Occupation | Printer |
| Industry | Commercial newspaper |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1092 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
| Occupation | Printer |
| Township / Ward | Muskegon City |
| Est. Birth Year | ~1919 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| John Decker | Son | — | 21 | ~1919 |
| Raymond Decker | Son | — | 9 | ~1931 |
| Dorothy Decker | Daughter | — | 13 | ~1927 |
| Martha Decker | Spouse | — | 50 | ~1890 |
| Marian Decker | Daughter | — | 11 | ~1929 |
| Albert Decker | Son | — | 20 | ~1920 |
| Charles Decker | Head | — | 47 | ~1893 |
Census Appearances
1930
Muskegon, Michigan
Son, age 11
Muskegon, Michigan · implied b. ~1919 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Decker |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Michigan |
| Father's Birthplace | Michigan |
| Mother's Birthplace | Netherlands |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1940
Muskegon-County, Michigan
Son, age 21
Muskegon-County, Michigan · implied b. ~1919 — 7 household members
| Surname | Decker |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Michigan |
| 1935 Residence (City) | Muskegon City |
| 1935 Residence (County) | Muskegon |
| Occupation | Printer |
| Industry | Commercial newspaper |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1092 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| 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 Decker across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Decker
Son · 1940 · age 21 · b. ~1919 · Michigan
★ You are viewing this record
Sibling
Raymond Decker
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dorothy Decker
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Albert Decker
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Marian Decker
Sibling · 1940 · age 11
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 — Muskegon-County, Michigan
Open full size
1940 US Federal Census — Muskegon-County, Michigan
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01794-00772)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Beatrice R. Vanderberg | 22 | Daughter | New Worker | Michigan |
| 2 | Jean M. Vanderberg | 18 | Daughter | — | Michigan |
| 3 | Edward J. Lassard | 60 | Head | Carpenter | Michigan |
| 4 | Pamela Lassard | 60 | Wife | — | Canada-French |
| 5 | Edward J., Jr. Lassard | 27 | Son | Insurance | Michigan |
| 6 | Dode Jr. Athens | 40 | Head | Purchasing Agent | Michigan |
| 7 | Alice Athens | 39 | Wife | — | Wisconsin |
| 8 | Henry James Athens | 12 | Son | — | Michigan |
| 9 | Alfred Lee Athens | 9 | Son | — | Michigan |
| 10 | Mary Alice Athens | 52 | Sister | — | Michigan |
| 11 | Sam Vanderwerff | 59 | Head | Painter & Paperhanger | Netherlands |
| 12 | Anna Vanderwerff | 59 | Wife | — | Michigan |
| 13 | James De Marr | 28 | Head | Pressman | Michigan |
| 14 | Angeline De Marr | 25 | Wife | — | Michigan |
| 15 | Donald De Marr | 8 | Son | — | Michigan |
| 16 | Ronald De Marr | 5 | Son | — | Michigan |
| 17 | Dale De Marr | 3 | Son | — | Michigan |
| 18 | Calvin Herman | 48 | Head | Proprietor | Michigan |
| 19 | Cora Herman | 48 | Wife | — | Michigan |
| 20 | Sidney Feldman | 34 | Head | Core Maker | Michigan |
| 21 | Florence Feldman | 31 | Wife | Registered Nurse | Michigan |
| 22 | Robert Feldman | 3 | Son | — | Michigan |
| 23 | Jacob Thornburg | 28 | Head | Knit Assembler | Michigan |
| 24 | Inez Thornburg | 26 | Wife | — | Michigan |
| 25 | Joyce Thornburg | 5 | Daughter | — | Michigan |
| 26 | Bruce Thornburg | 1 | Son | — | Michigan |
| 27 | Charles Decker | 47 | Head | Cabinet Maker | Michigan |
| 28 | Martha Decker | 50 | Wife | — | Netherlands |
| 29 | John Decker THIS PERSON | 21 | Son | Printer | Michigan |
| 30 | Albert Decker | 20 | Son | Labor | Michigan |
| 31 | Dorothy Decker | 13 | Daughter | — | Michigan |
| 32 | Marian Decker | 11 | Daughter | — | Michigan |
| 33 | Raymond Decker | 9 | Son | — | Michigan |
| 34 | Russell Thenetra | 29 | Head | Collector | Michigan |
| 35 | Clara Thenetra | 32 | Wife | — | Michigan |
| 36 | Sandra Sue Thenetra | 1 | Daughter | — | Michigan |
| 37 | George Tarte | 77 | Head | Proprietor | Illinois |
| 38 | Rose Ochuly | 68 | Sister-in-law | — | Michigan |
| 39 | Birdie June Ochuly | 8 | Niece | — | Michigan |
| 40 | Minnie Heather | 62 | Lodger | — | 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)