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Mary Mcelroy — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Sumter-County, Alabama
Our Model Tree links this Mary Mcelroy across the 1920, 1930 and 1940 US Censuses in Sumter-County, Alabama (XGBoost, ~Confirmed) — first a spouse (b.~1893), then head of a 5-person household.
Age 47
b. ~1893
Female
Spouse
Born: Alabama
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Sumter-County, Alabama |
| Surname | McElroy |
| Given Name | Mary L. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 47 |
| Marital Status | Married |
| Birthplace | Alabama |
| 1935 Residence (City) | Cuba town |
| 1935 Residence (County) | Sumter |
| Additional Details | |
| Occupation | Adult Teacher |
| Industry | Educational Project |
| Class of Worker | GW |
| Hours Worked | 15 |
| Income (1939) | 259 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Alabama |
| Birth Country | United States |
| Birthplace (normalized) | alabama |
| Occupation | Adult Teacher |
| Township / Ward | Cuba Town |
| Est. Birth Year | ~1893 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Mcelroy | Spouse | — | 47 | ~1893 |
| James Mcelroy | Son | — | 18 | ~1922 |
| Dorothy Mcelroy | Daughter | — | 15 | ~1925 |
| James Mcelroy | Head | — | 55 | ~1885 |
| Bessie Mcelroy | Daughter | — | 17 | ~1923 |
Census Appearances
1920
Sumter, Alabama
Spouse, age 27
Sumter, Alabama · implied b. ~1893 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McElroy |
| Given Name | Mary E |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 27 |
| Marital Status | Married |
| Birthplace | Alabama |
| Father's Birthplace | Alabama |
| Mother's Birthplace | Alabama |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Alabama |
| Birth Country | United States |
| Birthplace (normalized) | alabama |
1930
Sumter, Alabama
Spouse, age 37
Sumter, Alabama · implied b. ~1893 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McElroy |
| Given Name | Mary L |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 37 |
| Marital Status | Married |
| Birthplace | Alabama |
| Age at First Marriage | 21 |
| Father's Birthplace | Alabama |
| Mother's Birthplace | Alabama |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Alabama |
| Birth Country | United States |
| Birthplace (normalized) | alabama |
1940
Sumter-County, Alabama
Spouse, age 47
Sumter-County, Alabama · implied b. ~1893 — 5 household members
| Surname | McElroy |
| Given Name | Mary L. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 47 |
| Marital Status | Married |
| Birthplace | Alabama |
| 1935 Residence (City) | Cuba town |
| 1935 Residence (County) | Sumter |
| Occupation | Adult Teacher |
| Industry | Educational Project |
| Class of Worker | GW |
| Hours Worked | 15 |
| Income (1939) | 259 |
| Highest Grade | No 8 |
| 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 Mcelroy 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 Mcelroy
Spouse · 1940 · age 47 · b. ~1893 · Alabama
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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 — Sumter-County, Alabama
Open full size
1940 US Federal Census — Sumter-County, Alabama
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00080-00683)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Arterious M. Brewer | 67 | Head | Sawyer | Alabama |
| 2 | Minnie L. Brewer | 61 | Wife | — | Alabama |
| 3 | Calvin L. Brewer | 36 | Son | Planer Mill Foreman | Alabama |
| 4 | Bettie F. Brewer | 63 | Wife | — | Alabama |
| 5 | Joseph C. Davidson | 39 | Head | Salesman | Alabama |
| 6 | Margaret M. Davidson | 40 | Wife | — | Alabama |
| 7 | Mary Ann Davidson | 8 | Daughter | — | Alabama |
| 8 | Margaret Davidson | 7 | Daughter | — | Alabama |
| 9 | Roberta L. Gallatus | 28 | Boarder | Teacher | Arkansas |
| 10 | John E. Miller | 39 | Head | Farmer | Mississippi |
| 11 | Mertie E. Miller | 40 | Wife | — | Alabama |
| 12 | William C. Miller | 21 | Son | Laborer | Alabama |
| 13 | Frances E. Few | 27 | Boarder | Teacher | Alabama |
| 14 | Lee H. Mcelroy | 29 | Head | Supervising Clerk | Alabama |
| 15 | Temple F. Mcelroy | 26 | Wife | — | Alabama |
| 16 | Harold T. Mcelroy | 5 | Son | — | Alabama |
| 17 | Iniz Giles | 52 | Mother-in-law | — | Mississippi |
| 18 | James T. Upchurch | 55 | Head | Renovating Piano And Toy Project | Alabama |
| 19 | Sarah L. Upchurch | 54 | Wife | — | Alabama |
| 20 | Annie G. Upchurch | 19 | Daughter | — | Alabama |
| 21 | James D. Mcelroy | 55 | Head | Salesman | Alabama |
| 22 | Mary L. Mcelroy THIS PERSON | 47 | Wife | Adult Teacher | Alabama |
| 23 | James J. Mcelroy | 18 | Son | Attendant | Alabama |
| 24 | Bessie M. Mcelroy | 17 | Daughter | — | Alabama |
| 25 | Dorothy J. Mcelroy | 15 | Daughter | — | Alabama |
| 26 | Mollie Upchurch | 68 | Head | — | Alabama |
| 27 | Ada A. Spepper | 66 | Head | — | Mississippi |
| 28 | Elery J. Spepper | 48 | Son | Life Insurance Agent | Mississippi |
| 29 | Mari E. Spepper | 37 | Daughter-in-law | — | Alabama |
| 30 | Albert Mcclaurich | 76 | Head | — | Mississippi |
| 31 | Hattie Mcclaurich | 65 | Wife | — | Mississippi |
| 32 | James E. Sheffield | 41 | Head | Blacksmith | Alabama |
| 33 | Essie K. Sheffield | 38 | Wife | — | Alabama |
| 34 | Ella D. Bell | 66 | Head | — | Alabama |
| 35 | Henry B. May | 33 | Boarder | Miller | Alabama |
| 36 | Gladys May | 30 | Boarder | Teacher | Alabama |
| 37 | Abner D. Beavers | 61 | Head | Salesman | Alabama |
| 38 | Ella M. Beavers | 67 | Wife | — | Alabama |
| 39 | David T. Shepherd | 35 | Head | Night Watchman | Mississippi |
| 40 | Mattie E. Shepherd | 31 | Wife | — | Mississippi |
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)