MD
Mary Decker — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Wayne-County, Michigan
Our Model Tree links this Mary Decker across the 1930 and 1940 US Censuses in Wayne-County, Michigan (XGBoost, ~Confirmed) — first a spouse (b.~1895), then head of a 6-person household.
Age 45
b. ~1895
Female
Spouse
Born: Michigan
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Wayne-County, Michigan |
| Surname | Decker |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 45 |
| Marital Status | Married |
| Birthplace | Michigan |
| 1935 Residence (City) | Detroit City |
| 1935 Residence (County) | Wayne |
| Additional Details | |
| Industry | 0 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
| Township / Ward | Detroit City |
| Est. Birth Year | ~1895 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Roger Decker | Son | — | 20 | ~1920 |
| Howard Decker | Son | — | 17 | ~1923 |
| Shirley Decker | Daughter | — | 14 | ~1926 |
| Harry Decker | Head | — | 51 | ~1889 |
| Mary Decker | Spouse | — | 45 | ~1895 |
| Eleanore Decker | Daughter | — | 22 | ~1918 |
Census Appearances
1930
Wayne, Michigan
Spouse, age 34
Wayne, Michigan · implied b. ~1896 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Dicker |
| Given Name | Martha |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 34 |
| Marital Status | Married |
| Birthplace | Michigan |
| Age at First Marriage | 19 |
| Father's Birthplace | New York |
| Mother's Birthplace | New York |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1940
Wayne-County, Michigan
Spouse, age 45
Wayne-County, Michigan · implied b. ~1895 — 6 household members
| Surname | Decker |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 45 |
| Marital Status | Married |
| Birthplace | Michigan |
| 1935 Residence (City) | Detroit City |
| 1935 Residence (County) | Wayne |
| Industry | 0 |
| Highest Grade | H 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 Mary Decker across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Decker
Spouse · 1940 · age 45 · b. ~1895 · Michigan
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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 — Wayne-County, Michigan
Open full size
1940 US Federal Census — Wayne-County, Michigan
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01860-01075)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Ivan S. Mendenhall | 42 | Head | Electrical Engineer | Indiana |
| 42 | Lorraine Mendenhall | 37 | Wife | — | Michigan |
| 43 | Ruth Mendenhall | 13 | daughter | — | Michigan |
| 44 | Lois Mendenhall | 9 | daughter | — | Michigan |
| 45 | Lawrence Benkert | 34 | Head | Wallpaper & Paint Salesman | Michigan |
| 46 | Genevieve Benkert | 37 | Wife | — | Wisconsin |
| 47 | Lawrence Benkert | 4 | son | — | Michigan |
| 48 | James A. Benkert | 3 | son | — | Michigan |
| 49 | Genevieve Benkert | 2 | daughter | — | Michigan |
| 50 | William Curtis | 26 | Head | New Worker | Michigan |
| 51 | Elinor Curtis | 24 | Wife | Stenographer | Michigan |
| 52 | Arthur L. Hester | 46 | Head | Master Mechanic Tool & Die Maker | Connecticut |
| 53 | Celine Hester | 42 | Wife | — | Connecticut |
| 54 | Elinore Hester | 12 | daughter | — | Michigan |
| 55 | William Hewitt | 40 | Head | Proprietor | Michigan |
| 56 | Phyllis Hewitt | 38 | Wife | — | Michigan |
| 57 | Eleanor Hewitt | 18 | daughter | — | Michigan |
| 58 | Lyall F. Maertz | 38 | Head | Deputy Collector | Michigan |
| 59 | Margaret Maertz | 40 | Wife | — | Michigan |
| 60 | William Maertz | 14 | son | — | Michigan |
| 61 | Brett Maertz | 7 | son | — | Michigan |
| 62 | Joyce Maertz | 2 | daughter | — | Michigan |
| 63 | Francis C. Rush | 51 | Head | Salesman Factory Representative | Pennsylvania |
| 64 | Helen E. Rush | 40 | Wife | Telephone Operator | Ohio |
| 65 | Harry Decker | 51 | Head | Salesman | Michigan |
| 66 | Mary Decker THIS PERSON | 45 | Wife | — | Michigan |
| 67 | Eleanore Decker | 22 | daughter | Sales Clerk | Michigan |
| 68 | Roger Decker | 20 | son | Wrapper | Michigan |
| 69 | Howard Decker | 17 | son | — | Michigan |
| 70 | Shirley Decker | 14 | daughter | — | Michigan |
| 71 | Harry J. O'Neil | 49 | Head | Proprietor | Michigan |
| 72 | Jeanette O'Neil | 48 | Wife | Manager Of Shop | Indiana |
| 73 | Anna Driver | 61 | mother in law | — | Indiana |
| 74 | Richard Sell | 44 | Head | Dentist | Minnesota |
| 75 | Ruth Sell | 38 | Wife | — | Illinois |
| 76 | Sally Sell | 13 | daughter | — | Michigan |
| 77 | Lionel H. Marshall | 60 | Head | Proprietor | English Canada |
| 78 | Alberta Marshall | 60 | Wife | — | Michigan |
| 79 | Emily Templeton | 25 | daughter | Typing + Filing | Michigan |
| 80 | Richard Templeton | 7 | grandson | — | 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)