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Mary Black — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Baltimore-City-County, Maryland
Our Model Tree links this Mary Black across the 1920, 1930 and 1940 US Censuses in Baltimore-City-County, Maryland (XGBoost, ~Confirmed) — first a spouse (b.~1886), then head of a 4-person household.
Age 54
b. ~1886
Female
Spouse
Born: Maryland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Baltimore-City-County, Maryland |
| Surname | Black |
| Given Name | Mary E. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 54 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore City |
| 1935 Residence (County) | Baltimore City |
| Additional Details | |
| Highest Grade | S 8 |
| 1935 Residence | Same place |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Township / Ward | Baltimore City |
| Est. Birth Year | ~1886 |
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 |
|---|---|---|---|---|
| Jacob Black | Head | — | 56 | ~1884 |
| Joseph Black | Son | — | 35 | ~1905 |
| Harry Black | Son | — | 26 | ~1914 |
| Mary Black | Spouse | — | 54 | ~1886 |
Census Appearances
1920
None, Maryland
Spouse, age 34
None, Maryland · implied b. ~1886 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Black |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | Black |
| Age | 34 |
| Marital Status | Married |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1930
Baltimore, Maryland
Spouse, age 44
Baltimore, Maryland · implied b. ~1886 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Black |
| Given Name | Mary A |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 44 |
| Marital Status | Married |
| Birthplace | Maryland |
| Age at First Marriage | 20 |
| Father's Birthplace | Maryland |
| 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 54
Baltimore-City-County, Maryland · implied b. ~1886 — 4 household members
| Surname | Black |
| Given Name | Mary E. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 54 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore City |
| 1935 Residence (County) | Baltimore City |
| Highest Grade | S 8 |
| 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 Black across 3 US Census years (1920, 1930 and 1940) in 3 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Black
Spouse · 1940 · age 54 · b. ~1886 · 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
37 people indexed on this census page (nara:1940:m-t0627-01509-00258)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | William J. Beck | 42 | Head | Mail Carrier | Maryland |
| 42 | John J. Beck | 27 | Son | Type Setter | Maryland |
| 43 | Walter B. Rice | 41 | Head | Laborer | Maryland |
| 44 | Cecilia Rice | 33 | Wife | Operator | Maryland |
| 45 | Veronica Rice | 16 | Daughter | — | Maryland |
| 46 | Josephine Rice | 11 | Daughter | — | Maryland |
| 47 | Charles Parochowskas | 32 | Head | Laborer | Maryland |
| 48 | William Parochowskas | 19 | Brother | Packer | Maryland |
| 49 | Sophia Romenski | 35 | Sister | — | Michigan |
| 50 | Clifford Romenski | 6 | Nephew | — | Maryland |
| 51 | William H. Rome | 53 | Head | Pipe Fitter | Maryland |
| 52 | William Jr. Rome | 18 | Son | Packer | Maryland |
| 53 | Dorothy C. Rome | 15 | Daughter | — | Maryland |
| 54 | Leon Fisher | 48 | Head | Policeman | Germany |
| 55 | Madeline Fisher | 47 | Wife | — | Maryland |
| 56 | Dorothy Fisher | 23 | Daughter | Disinfector | Maryland |
| 57 | Edward Fisher | 21 | Son | Errand Boy | Maryland |
| 58 | Mildred Fisher | 15 | Daughter | — | Maryland |
| 59 | Jacob Black | 56 | Head | Upholsterer | Maryland |
| 60 | Mary E. Black THIS PERSON | 54 | Wife | — | Maryland |
| 61 | Joseph Black | 35 | Son | Laborer | Maryland |
| 62 | Harry Black | 26 | Son | — | Maryland |
| 63 | Constance Suicki | 58 | Head | — | Poland |
| 64 | Valeria Suicki | 58 | Wife | — | Poland |
| 65 | Helen Suicki | 23 | Daughter | Beautician | Maryland |
| 66 | George Johnson | 31 | Head | Truck Driver | Mississippi |
| 67 | Isabelle Johnson | 27 | Wife | — | Maryland |
| 68 | George Jr. Johnson | 5 | Son | — | Maryland |
| 69 | Jeanette Johnson | 2 | Daughter | — | Maryland |
| 70 | Joseph Bunk | 43 | Head | Machinist | Maryland |
| 71 | Julia B. Bunk | 38 | Wife | — | Maryland |
| 72 | Charles Bunk | 12 | Son | — | Maryland |
| 73 | Loretta Bunk | 10 | Daughter | — | Maryland |
| 74 | Deloris Bunk | 7 | Daughter | — | Maryland |
| 75 | Charlotte Bunk | 4 | Daughter | — | Maryland |
| 76 | Joseph Jr. Bunk | 3 | Son | — | Maryland |
| 77 | Francis Bunk | 1 | Daughter | — | Maryland |
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)