MJ
Margaret Johnson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Baltimore-City-County, Maryland
Our Model Tree links this Margaret Johnson across the 1920, 1930 and 1940 US Censuses in Baltimore-City-County, Maryland (XGBoost, ~Confirmed) — first a spouse (b.~1904), then head of a 5-person household.
Age 36
b. ~1904
Female
Spouse
Born: Maryland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Baltimore-City-County, Maryland |
| Surname | Johnson |
| Given Name | Margaret |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | Black |
| Age | 36 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore City |
| 1935 Residence (County) | Baltimore City |
| Additional Details | |
| Occupation | Maid |
| Industry | Doctor's office |
| Class of Worker | PW |
| Hours Worked | 16 |
| Income (1939) | 500 |
| Highest Grade | No 7 |
| 1935 Residence | Same place |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Occupation | Maid |
| Township / Ward | Baltimore City |
| Est. Birth Year | ~1904 |
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 Margaret | Age | Birth yr |
|---|---|---|---|---|
| Cynthia Johnson | Daughter | — | 18 | ~1922 |
| Dorothy Johnson | Daughter | — | 20 | ~1920 |
| Curland Johnson | Head | — | 39 | ~1901 |
| Andre Johnson | Son | — | 3 | ~1937 |
| Margaret Johnson | Spouse | — | 36 | ~1904 |
Census Appearances
1920
Baltimore, Maryland
Other, age 18
Baltimore, Maryland · implied b. ~1902 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Margaret |
| Relationship to Head | Maid |
| Sex | F |
| Color / Race | Black |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | Maid |
| 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
Other, age 27
Baltimore, Maryland · implied b. ~1903 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Margaret |
| Relationship to Head | Lodger |
| Sex | F |
| Color / Race | Black |
| Age | 27 |
| Marital Status | Married |
| Birthplace | Maryland |
| Age at First Marriage | 18 |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | Charwoman |
| Industry | Roof Garden |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Baltimore-City-County, Maryland
Spouse, age 36
Baltimore-City-County, Maryland · implied b. ~1904 — 5 household members
| Surname | Johnson |
| Given Name | Margaret |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | Black |
| Age | 36 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore City |
| 1935 Residence (County) | Baltimore City |
| Occupation | Maid |
| Industry | Doctor's office |
| Class of Worker | PW |
| Hours Worked | 16 |
| Income (1939) | 500 |
| Highest Grade | No 7 |
| 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 Margaret Johnson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Margaret Johnson
Spouse · 1940 · age 36 · b. ~1904 · 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 — Baltimore-City-County, Maryland
Open full size
1940 US Federal Census — Baltimore-City-County, Maryland
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01518-00405)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Mary Radfield | 52 | Head | Maid | Maryland |
| 2 | Sylvester Pinkston | 26 | Lodger | Maid | Florida |
| 3 | Mamie Johnson | 49 | Lodger | Maid | Maryland |
| 4 | Willie H. Flemming | 77 | Head | Maid | Maryland |
| 5 | Sarah Jane Flemming | 68 | Wife | Maid | Maryland |
| 6 | Estelle Johnson | 62 | Sister in law | Maid | Maryland |
| 7 | Curland Johnson | 39 | Head | Maid | Maryland |
| 8 | Margaret Johnson THIS PERSON | 36 | Wife | Maid | Maryland |
| 9 | Dorothy V. Johnson | 20 | Daughter | Maid | Maryland |
| 10 | Cynthia H. Johnson | 18 | Daughter | Maid | Maryland |
| 11 | Andre S. Johnson | 3 | Son | — | New York |
| 12 | Marlene Roberts | 38 | Head | Domestic | Maryland |
| 13 | Alberta Shaw | 70 | Mother | Maid | Maryland |
| 14 | William Chambers | 55 | Head | Butler | Virginia |
| 15 | Jack Morris | 38 | Lodger | Sexton | Virginia |
| 16 | Thomas Lee | 26 | Lodger | Porter | South Carolina |
| 17 | Theodore H. Philip | 35 | Head | Butler | Maryland |
| 18 | Beatrice Philip | 29 | Wife | Elevator Op. | Virginia |
| 19 | Howard Ward | 35 | Lodger | Chauffeur | Maryland |
| 20 | George D. Brown | 32 | Head | Red Cap | Maryland |
| 21 | Ruth E. Brown | 30 | Wife | — | Virginia |
| 22 | Geo. George D. Brown | 13 | Son | — | Maryland |
| 23 | Nesbit Brown | 4 | Son | — | Maryland |
| 24 | Gerald Brown | 3 | Son | — | Maryland |
| 25 | James Brown | 2 | Son | — | Maryland |
| 26 | Turner Taylor | 49 | Head | Longshoreman | Maryland |
| 27 | Maggie Taylor | 37 | Wife | — | South Carolina |
| 28 | Geraldine Pleasant | 24 | Daughter | Waitress | South Carolina |
| 29 | James Fowler | 16 | Son | Delivery Boy | Maryland |
| 30 | Louise Johnson | 46 | Head | — | Maryland |
| 31 | Bessie Biles | 50 | Sister | Maid | Maryland |
| 32 | Irma Biles | 20 | Niece | Maid | Maryland |
| 33 | Julia Biles | 17 | Niece | — | Maryland |
| 34 | William Brady | 41 | Head | Janitor | Maryland |
| 35 | Virginia Brady | 68 | Mother | — | Maryland |
| 36 | Harold Chambers | 40 | Head | Butler | Pennsylvania |
| 37 | Marion Smith | 36 | Head | Maid | Maryland |
| 38 | Kathlyn Smith | 18 | Daughter | Laundress | Pennsylvania |
| 39 | Dorothea Smith | 16 | Daughter | — | Pennsylvania |
| 40 | Helen Winston | 47 | Head | Maid | 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)