MA
Mary Alexander — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Wayne-County, Michigan
Our Model Tree links this Mary Alexander across the 1920, 1930 and 1940 US Censuses in Wayne-County, Michigan (XGBoost, ~Confirmed) — first a spouse (b.~1894), then head of a 8-person household.
Age 46
b. ~1894
Female
Spouse
Born: Italy
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Wayne-County, Michigan |
| Surname | Alexander |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 46 |
| Marital Status | Married |
| Birthplace | Italy |
| 1935 Residence (City) | Detroit |
| 1935 Residence (County) | Wayne |
| Naturalization Status | Naturalized |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | 0 |
| 1935 Residence | Same place |
| Birth Country | Italy |
| Birthplace (normalized) | italy |
| Township / Ward | Detroit |
| Est. Birth Year | ~1894 |
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 Mary | Age | Birth yr |
|---|---|---|---|---|
| Dora Alexander | Daughter | — | 14 | ~1926 |
| Lena Alexander | Daughter | — | 16 | ~1924 |
| Theresa Alexander | Daughter | — | 18 | ~1922 |
| Annette Alexander | Daughter | — | 3 | ~1937 |
| Violet Alexander | Daughter | — | 7 | ~1933 |
| Thomas Alexander | Head | — | 53 | ~1887 |
| Frank Alexander | Son | — | 21 | ~1919 |
| Mary Alexander | Spouse | — | 46 | ~1894 |
Census Appearances
1920
Wayne, Michigan
Spouse, age 26
Wayne, Michigan · implied b. ~1894 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Alexander |
| Given Name | Marie |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 26 |
| Marital Status | Married |
| Birthplace | Italy |
| Year of Immigration | 1914 |
| Naturalization Status | Alien |
| Father's Birthplace | Italy |
| Mother's Birthplace | Italy |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Italian |
| Birth Country | Italy |
| Birthplace (normalized) | italy |
1930
Wayne, Michigan
Other, age 36
Wayne, Michigan · implied b. ~1894 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Alexander |
| Given Name | Mary |
| Relationship to Head | Wife-H |
| Sex | F |
| Color / Race | White |
| Age | 36 |
| Marital Status | Married |
| Birthplace | Italy |
| Naturalization Status | Naturalized |
| Year of Immigration | 1914 |
| Age at First Marriage | 19 |
| Father's Birthplace | Italy |
| Mother's Birthplace | Italy |
| Can Read/Write | No |
| Mother Tongue | Italian |
| Birth Country | Italy |
| Birthplace (normalized) | italy |
1940
Wayne-County, Michigan
Spouse, age 46
Wayne-County, Michigan · implied b. ~1894 — 8 household members
| Surname | Alexander |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 46 |
| Marital Status | Married |
| Birthplace | Italy |
| 1935 Residence (City) | Detroit |
| 1935 Residence (County) | Wayne |
| Naturalization Status | Naturalized |
| Income (1939) | 0 |
| Highest Grade | 0 |
| 1935 Residence | Same place |
| Birth Country | Italy |
| Birthplace (normalized) | italy |
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 Alexander across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Alexander
Spouse · 1940 · age 46 · b. ~1894 · 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-t0627-01884-00102)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Mary Sabins | 31 | Sister | — | Michigan |
| 42 | Thomas Currie | 33 | Brother in Law | Assembly | Canada English |
| 43 | Ann Currie | 32 | Sister | — | Michigan |
| 44 | Thomas Currie | 10 | Nephew | — | Michigan |
| 45 | Donald Currie | 6 | Nephew | — | Michigan |
| 46 | Kenneth Currie | 1 | Nephew | — | Michigan |
| 47 | Paul Demars | 44 | Head | Sandler Grinder | France |
| 48 | Alice Demars | 41 | Wife | — | France |
| 49 | Frank Gulek | 48 | Head | Assistant Foreman | Pennsylvania |
| 50 | Ruth Gulek | 17 | Daughter | — | Michigan |
| 51 | Katherine Lawson | 48 | Lodger | Mangle Operator | New Jersey |
| 52 | Thomas Alexander | 53 | Head | Bench Hand | New York |
| 53 | Mary Alexander THIS PERSON | 46 | Wife | — | Italy |
| 54 | Frank Alexander | 21 | Son | Press Operator | Michigan |
| 55 | Theresa Alexander | 18 | Daughter | — | Michigan |
| 56 | Lena Alexander | 16 | Daughter | — | Michigan |
| 57 | Dora Alexander | 14 | Daughter | — | Michigan |
| 58 | Violet Alexander | 7 | Daughter | — | Michigan |
| 59 | Annette Alexander | 3 | Daughter | — | Michigan |
| 60 | Adrian King | 31 | Head | Home Appliance Repair Man | Canada English |
| 61 | Mary King | 25 | Wife | — | Indiana |
| 62 | Thomas King | 4 | Son | — | Michigan |
| 63 | Shirley King | 0 | Daughter | — | Michigan |
| 64 | George Boccia | 34 | Head | Cement Finisher | Italy |
| 65 | Lucy Boccia | 23 | Wife | — | Michigan |
| 66 | John Kuba | 33 | Head | Pattern Maker | Pennsylvania |
| 67 | Mary Kuba | 33 | Wife | — | North Dakota |
| 68 | Howard Kuba | 10 | Son | — | Michigan |
| 69 | Harvey Kuba | 6 | Son | — | Michigan |
| 70 | Jack Moran | 37 | Head | Lithographer | New York |
| 71 | Anna Moran | 28 | Wife | — | Hungary |
| 72 | Frank Eberhardt | 25 | Head | Laborer | Jugo Slavia |
| 73 | Anna Eberhardt | 24 | Wife | — | Michigan |
| 74 | Anna Eberhardt | 10 | Daughter | — | Michigan |
| 75 | Frank Eberhardt | 7 | Son | — | Michigan |
| 76 | Gerald Eberhardt | 4 | Son | — | Michigan |
| 77 | Harry Eberhardt | 26 | Head | Truck Driver | Michigan |
| 78 | Margaret Eberhardt | 24 | Wife | — | Michigan |
| 79 | Larry Jr Eberhardt | 0 | Son | — | Michigan |
| 80 | Frank Minna | 41 | Head | Laborer | Italy |
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)