MD
Mary Davis — 1940 US Census Record
Model Tree available1940 United States Federal Census · Baltimore-City-County, Maryland
Our Model Tree links this Mary Davis across the 1920, 1930 and 1940 US Censuses in Baltimore-City-County, Maryland (XGBoost, ~Confirmed), with identified parents William & William — first a spouse (b.~1915), then head of a 4-person household.
Age 25
b. ~1915
Female
Spouse
Born: Maryland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Baltimore-City-County, Maryland |
| Surname | Davis |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | Black |
| Age | 25 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore City |
| 1935 Residence (County) | Baltimore City |
| Additional Details | |
| Industry | 0 |
| Highest Grade | No 6 |
| 1935 Residence | Same place |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Township / Ward | Baltimore City |
| Est. Birth Year | ~1915 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Thomas Davis | Head | — | 31 | ~1909 |
| William Davis | Son | — | 7 | ~1933 |
| Arthur Davis | Son | — | 2 | ~1938 |
| Mary Davis | Spouse | — | 25 | ~1915 |
Census Appearances
1920
Baltimore, Maryland
Daughter, age 5
Baltimore, Maryland · implied b. ~1915 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Davis |
| Given Name | Mary E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Georgia |
| Mother's Birthplace | Maryland |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1930
Baltimore, Maryland
Daughter, age 15
Baltimore, Maryland · implied b. ~1915 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Davis |
| Given Name | Mary E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | South Carolina |
| Mother's Birthplace | Maryland |
| Can Read/Write | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Baltimore-City-County, Maryland
Spouse, age 25
Baltimore-City-County, Maryland · implied b. ~1915 — 4 household members
| Surname | Davis |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | Black |
| Age | 25 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore City |
| 1935 Residence (County) | Baltimore City |
| Industry | 0 |
| 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 Davis across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father William Davis (~0.92 confidence) and father William Davis (~0.92 confidence) and mother Johanna Davis (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
William Davis
b. ~1892
Source father
● Household
· direct · ~0.92
Father
William Davis
b. ~1892
Source father
● Household
· direct · ~0.92
Mother
Johanna Davis
b. ~1901
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Davis
Spouse · 1940 · age 25 · b. ~1915 · Maryland
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Baltimore-City-County, Maryland
Open full size
1940 US Federal Census — Baltimore-City-County, Maryland
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-01534-00616)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Thomas Davis | 31 | Head | Laborer | Virginia |
| 2 | Mary Davis THIS PERSON | 25 | Wife | — | Maryland |
| 3 | William Davis | 7 | Son | — | Maryland |
| 4 | Arthur Davis | 2 | Son | — | Maryland |
| 5 | Leley Turner | 40 | Head | Manager | Alabama |
| 6 | Margaret Bolden | 23 | Lodger | Maker | South Carolina |
| 7 | John Little | 67 | Head | — | Maryland |
| 8 | Elizabeth Watch | 74 | Lodger | — | Maryland |
| 9 | Mary Ursel | 35 | Lodger | — | Maryland |
| 10 | Jack Wark | 63 | Lodger | Laborer | Maryland |
| 11 | Elsie Fowler | 47 | Lodger | — | D.C. |
| 12 | Blannie Delander | 60 | Head | Laborer | Virginia |
| 13 | Mary Delander | 38 | Wife | House Work | Virginia |
| 14 | Rudolph Mckinley | 23 | Head | Coal Trimmer | Virginia |
| 15 | Samuel Briggs | 20 | Step Brother | Coal Trimmer | Virginia |
| 16 | Willie Harper | 19 | Step Brother | Pin Boy | Virginia |
| 17 | Helen Stuckman | 24 | Lodger | — | Maryland |
| 18 | Marion Reebert | 60 | Mother | Maid | Virginia |
| 19 | Alice Brown | 9 | Cousin | — | Maryland |
| 20 | John Brown | 5 | Cousin | — | Maryland |
| 21 | Isadore Dempsey | 45 | Head | Laborer | North Carolina |
| 22 | Emma Dempsey | 40 | Wife | — | North Carolina |
| 23 | Lucy Barfield | 24 | Step daughter | Waitress | North Carolina |
| 24 | Robert Barfield | 22 | Step son | Mess Boy | North Carolina |
| 25 | Percy Barfield | 19 | Step son | — | North Carolina |
| 26 | Charles Barfield | 16 | Step son | New Worker | Maryland |
| 27 | William Dempsey | 9 | Son | — | Maryland |
| 28 | Alice Dempsey | 7 | Daughter | — | Maryland |
| 29 | George Smith | 19 | Lodger | New Worker | Virginia |
| 30 | Carrie Bass | 36 | Head | — | Maryland |
| 31 | Elworth Bass | 14 | Son | — | Maryland |
| 32 | Loraine Bass | 12 | Daughter | — | Maryland |
| 33 | David Bass | 7 | Son | — | Maryland |
| 34 | Raymond Bass | 2 | Son | — | Maryland |
| 35 | Ellen Mathew | 66 | Head | — | Maryland |
| 36 | Eleanor Baytop | 43 | Head | Helper | Virginia |
| 37 | Emma Baytop | 50 | Wife | — | Maryland |
| 38 | Mildred Hunt | 25 | Lodger | — | Maryland |
| 39 | James Hunt | 25 | Lodger | Laborer | South Carolina |
Pedigree Summary
Mary
Gen 1 · 3 parents
~0.92
Max depth 4 (1900–1950 window)
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)