MG
Mary Grimes — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Wayne-County, Michigan
Our Model Tree links this Mary Grimes across the 1930 and 1940 US Censuses in Wayne-County, Michigan (XGBoost, ~Confirmed) — first a spouse (b.~1895), then head of a 3-person household.
Age 45
b. ~1895
Female
Spouse
Born: Alabama
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Wayne-County, Michigan |
| Surname | Grimes |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | Black |
| Age | 45 |
| Marital Status | Married |
| Birthplace | Alabama |
| 1935 Residence (City) | Detroit City |
| 1935 Residence (County) | Wayne |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | No 6 |
| 1935 Residence | Same place |
| Birth State | Alabama |
| Birth Country | United States |
| Birthplace (normalized) | alabama |
| 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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Grimes | Spouse | — | 45 | ~1895 |
| Samuel Grimes | Son | — | 9 | ~1931 |
| Samuel Grimes | Head | — | 49 | ~1891 |
Census Appearances
1930
Wayne, Michigan
Other, age 35
Wayne, Michigan · implied b. ~1895 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Green |
| Given Name | Mary |
| Relationship to Head | Wife-h |
| Sex | F |
| Color / Race | Black |
| Age | 35 |
| Marital Status | Married |
| Birthplace | Alabama |
| Age at First Marriage | 25 |
| Father's Birthplace | Alabama |
| Mother's Birthplace | Alabama |
| Can Read/Write | Yes |
| Birth State | Alabama |
| Birth Country | United States |
| Birthplace (normalized) | alabama |
1940
Wayne-County, Michigan
Spouse, age 45
Wayne-County, Michigan · implied b. ~1895 — 3 household members
| Surname | Grimes |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | Black |
| Age | 45 |
| Marital Status | Married |
| Birthplace | Alabama |
| 1935 Residence (City) | Detroit City |
| 1935 Residence (County) | Wayne |
| Income (1939) | 0 |
| Highest Grade | No 6 |
| 1935 Residence | Same place |
| Birth State | Alabama |
| Birth Country | United States |
| Birthplace (normalized) | alabama |
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 Grimes across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Grimes
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
38 people indexed on this census page (nara:1940:m-t0627-01862-00747)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Tilly Cook | 25 | Wife | Secretary | Indiana |
| 42 | Michael Plucheinski | 48 | Head | Laborer | Poland |
| 43 | Rosalie Plucheinski | 46 | Wife | — | Poland |
| 44 | Henry Plucheinski | 23 | Son | Laborer | New Jersey |
| 45 | Hedwig Plucheinski | 21 | Daughter | Typist | Michigan |
| 46 | Mitchell Plucheinski | 20 | Son | New Worker | Connecticut |
| 47 | Walter Plucheinski | 18 | Son | — | Michigan |
| 48 | Rufus Long | 32 | Head | Laborer | Alabama |
| 49 | Velma Long | 25 | Wife | — | Georgia |
| 50 | Katherine Long | 7 | Daughter | — | Alabama |
| 51 | Arthur Cooper | 45 | Head | Laborer | Alabama |
| 52 | Ocie Waugh | 51 | Head | — | Ohio |
| 53 | Daisy Nullens | 58 | Sister | — | Ohio |
| 54 | Walter Szewicz | 49 | Head | Laborer | Poland |
| 55 | Stefania Szewicz | 38 | Wife | — | Poland |
| 56 | John Szewicz | 16 | Son | — | Michigan |
| 57 | Stanley Szewicz | 15 | Son | — | Michigan |
| 58 | Aurelia Szewicz | 13 | Daughter | — | Michigan |
| 59 | Pauline Szewicz | 12 | Daughter | — | Michigan |
| 60 | Helen Szewicz | 7 | Daughter | — | Michigan |
| 61 | Chester Szewicz | 4 | Son | — | Michigan |
| 62 | Samuel Grimes | 49 | Head | Rubbish Collector | Alabama |
| 63 | Mary Grimes THIS PERSON | 45 | Wife | — | Alabama |
| 64 | Samuel Jr. Grimes | 9 | Son | — | Michigan |
| 65 | Henry Hawkins | 41 | Head | Laborer | Michigan |
| 66 | Marie Hawkins | 38 | Wife | — | Pennsylvania |
| 67 | Burton Hawkins | 9 | Son | — | Michigan |
| 68 | Curtis Hawkins | 6 | Son | — | Michigan |
| 69 | Henry Waddles | 41 | Head | Butchering | Alabama |
| 70 | America Waddles | 40 | Wife | — | Alabama |
| 71 | Henry Jr. Waddles | 15 | Son | — | Michigan |
| 72 | Hazel Waddles | 13 | Daughter | — | Michigan |
| 73 | Alvera Waddles | 5 | Daughter | — | Michigan |
| 74 | Alvin Waddles | 1 | Son | — | Michigan |
| 75 | John W. Roberts | 53 | Head | Plasterer | Kentucky |
| 76 | Carlie Roberts | 52 | Wife | — | Kentucky |
| 77 | Nicholas Badowski | 41 | Head | Pattern Maker | Poland |
| 78 | Agnes Badowski | 30 | Wife | — | New York |
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)