MD
Mary Day — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Anne-Arundel-County, Maryland
Our Model Tree links this Mary Day across the 1920, 1930 and 1940 US Censuses in Anne-Arundel-County, Maryland (XGBoost, ~Confirmed) — first a spouse (b.~1900), then head of a 10-person household.
Age 40
b. ~1900
Female
Spouse
Born: Maryland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Anne-Arundel-County, Maryland |
| Surname | Day |
| Given Name | Mary V |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | 4th Election District |
| 1935 Residence (County) | Anne Arundel |
| Additional Details | |
| Highest Grade | No 6 |
| 1935 Residence | Same place |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Township / Ward | 4Th Election District |
| Est. Birth Year | ~1900 |
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.
10 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Louise Day | Daughter | — | 22 | ~1918 |
| Evelyn Day | Daughter | — | 7 | ~1933 |
| Dorothy Day | Daughter | — | 9 | ~1931 |
| Coral Day | Daughter | — | 4 | ~1936 |
| Irene Day | Daughter | — | 16 | ~1924 |
| George Day | Head | — | 45 | ~1895 |
| James Day | Son | — | 20 | ~1920 |
| Walter Day | Son | — | 18 | ~1922 |
| Frank Day | Son | — | 13 | ~1927 |
| Mary Day | Spouse | — | 40 | ~1900 |
Census Appearances
1920
Baltimore, Maryland
Spouse, age 25
Baltimore, Maryland · implied b. ~1895 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Day |
| Given Name | Maggie |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | Black |
| Age | 25 |
| Marital Status | Married |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | Laundress |
| Industry | Private Family |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1930
Baltimore, Maryland
Spouse, age 30
Baltimore, Maryland · implied b. ~1900 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Day |
| Given Name | Margaret |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 30 |
| Marital Status | Married |
| Birthplace | Maryland |
| Age at First Marriage | 24 |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Can Read/Write | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Anne-Arundel-County, Maryland
Spouse, age 40
Anne-Arundel-County, Maryland · implied b. ~1900 — 10 household members
| Surname | Day |
| Given Name | Mary V |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | 4th Election District |
| 1935 Residence (County) | Anne Arundel |
| Highest Grade | No 6 |
| 1935 Residence | Same place |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
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 Day 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 Day
Spouse · 1940 · age 40 · b. ~1900 · Maryland
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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 — Anne-Arundel-County, Maryland
Open full size
1940 US Federal Census — Anne-Arundel-County, Maryland
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01501-00847)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Mary Luboski | 52 | Wife | — | Prussia |
| 2 | Frank Luboski | 21 | Son | Huckster | Maryland |
| 3 | Adam Luboski | 19 | Son | Labor | Maryland |
| 4 | Jerry Luboski | 13 | Son | — | Maryland |
| 5 | Mitchell Whaley | 56 | Head | Laborer | Maryland |
| 6 | Harriet Whaley | 26 | Wife | — | Maryland |
| 7 | Dora Scott | 50 | Daughter | — | Maryland |
| 8 | Thelma Anderson | 25 | Daughter | — | Maryland |
| 9 | Korina Mathers | 28 | Boarder | — | Virginia |
| 10 | Elgar O Potts | 39 | Head | Laborer | D.C. |
| 11 | Nettie Potts | 34 | Wife | — | Maryland |
| 12 | William Potts | 13 | Son | — | Maryland |
| 13 | Thelma Potts | 11 | Daughter | — | Maryland |
| 14 | Elsie Potts | 10 | Daughter | — | Maryland |
| 15 | Theresa Potts | 8 | Daughter | — | Maryland |
| 16 | Earl Potts | 5 | Son | — | Maryland |
| 17 | Elizabeth Potts | 2 | Daughter | — | Maryland |
| 18 | George Day | 45 | Head | Laborer | Maryland |
| 19 | Mary V Day THIS PERSON | 40 | Wife | — | Maryland |
| 20 | Louise Day | 22 | Daughter | — | Maryland |
| 21 | James Day | 20 | Son | Laborer | Maryland |
| 22 | Walter Day | 18 | Son | Laborer | Maryland |
| 23 | Irene Day | 16 | Daughter | — | Maryland |
| 24 | Frank Day | 13 | Son | — | Maryland |
| 25 | Dorothy Day | 9 | Daughter | — | Maryland |
| 26 | Evelyn Day | 7 | Daughter | — | Maryland |
| 27 | Coral Day | 4 | Daughter | — | Maryland |
| 28 | Daniel Dunlap | 48 | Head | Laborer | North Carolina |
| 29 | Addie Dunlap | 41 | Wife | — | Maryland |
| 30 | Ruby Dunlap | 12 | Daughter | — | Maryland |
| 31 | Virginia Dunlap | 9 | Daughter | — | Maryland |
| 32 | Henry Dunlap | 8 | Son | — | Maryland |
| 33 | Joseph Kowricki | 46 | Head | Chief Petty Officer | Maryland |
| 34 | Edith Kowricki | 46 | Wife | — | Maryland |
| 35 | Dorothy Kowricki | 30 | Daughter | Inspector | Maryland |
| 36 | Marie Kowricki | 15 | Daughter | — | Maryland |
| 37 | Daniel Kowricki | 11 | Son | — | Maryland |
| 38 | Melvin Kowricki | 8 | Son | — | Maryland |
| 39 | Jerry Kowricki | 7 | Son | — | Maryland |
| 40 | Gustof Stankowski | 54 | Head | Farmer | Poland |
Related Census Records
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)