MJ
Mamie Jackson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Baltimore-City-County, Maryland
Our Model Tree links this Mamie Jackson across the 1920, 1930 and 1940 US Censuses in Baltimore-City-County, Maryland (XGBoost, ~Confirmed) — first a head (b.~1893), then head of a 4-person household.
Age 47
b. ~1893
Female
Head
Born: Maryland
Widowed
1940 Census Record Details
| Census Year | 1940 |
| Location | Baltimore-City-County, Maryland |
| Surname | Jackson |
| Given Name | Mamie |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | Black |
| Age | 47 |
| Marital Status | Widowed |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore City |
| 1935 Residence (County) | Baltimore City |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | 5 |
| 1935 Residence | Same place |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Township / Ward | Baltimore City |
| 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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mamie | Age | Birth yr |
|---|---|---|---|---|
| Mamie Jackson | Head | — | 47 | ~1893 |
| Mamie Bond | Daughter | — | 23 | ~1917 |
| Blanche Jackson | Daughter | — | 17 | ~1923 |
| Melvin Bond | Other | — | 3 | ~1937 |
Census Appearances
1920
None, Maryland
Other, age 30
None, Maryland · implied b. ~1890 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jackson |
| Given Name | Mamie |
| Relationship to Head | Lodger |
| Sex | F |
| Color / Race | Black |
| Age | 30 |
| Marital Status | Married |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | Waitress |
| Industry | Restaurant |
| 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 39
Baltimore, Maryland · implied b. ~1891 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jackson |
| Given Name | Mamie |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | Black |
| Age | 39 |
| Marital Status | Married |
| Birthplace | Maryland |
| Age at First Marriage | 36 |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Veteran | No |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Baltimore-City-County, Maryland
Head, age 47
Baltimore-City-County, Maryland · implied b. ~1893 — 4 household members
| Surname | Jackson |
| Given Name | Mamie |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | Black |
| Age | 47 |
| Marital Status | Widowed |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore City |
| 1935 Residence (County) | Baltimore City |
| Income (1939) | 0 |
| Highest Grade | 5 |
| 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 Mamie Jackson across 3 US Census years (1920, 1930 and 1940) in 3 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mamie Jackson
Head · 1940 · age 47 · b. ~1893 · 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
40 people indexed on this census page (nara:1940:m-t0627-01523-00330)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Mamie Jackson THIS PERSON | 47 | Head | — | Maryland |
| 42 | Blanche Jackson | 17 | Daughter | — | Maryland |
| 43 | Mamie Bond | 23 | Daughter | — | Maryland |
| 44 | Melvin Bond | 3 | Grandson | — | Maryland |
| 45 | Virginia Nottingham | 31 | Head | — | Maryland |
| 46 | Sylvia Nottingham | 2 | Daughter | — | Maryland |
| 47 | Moses Callaway | 54 | Head | Operator | California |
| 48 | Julia Callaway | 49 | Wife | — | Maryland |
| 49 | Moses Jr. Callaway | 20 | Son | — | Maryland |
| 50 | Lewis Pettus | 29 | Lodger | Waiter | Virginia |
| 51 | Anita Douglass | 32 | Head | Elevator | Virginia |
| 52 | Rosella Douglass | 27 | Sister | Housemaid | Virginia |
| 53 | Willie Douglass | 18 | Niece | Helper | Virginia |
| 54 | William Colbert | 70 | Head | Head Waiter | Maryland |
| 55 | Cornelia Colbert | 70 | Wife | — | South Carolina |
| 56 | Charles Daniels | 32 | Lodger | Porter | Texas |
| 57 | Onether Daniels | 33 | Lodger | Servant | Louisiana |
| 58 | Hillary Steward | 27 | Lodger | Janitor | Virginia |
| 59 | Mary Steward | 27 | Lodger | Servant | Virginia |
| 60 | Elizabeth Tomlin | 36 | Lodger | Servant | Virginia |
| 61 | Ellen Tomlin | 29 | Lodger | Servant | Virginia |
| 62 | Elizabeth Mitchell | 27 | Lodger | Servant | North Carolina |
| 63 | Reginald Wilson | 36 | Head | Porter | West Indies |
| 64 | Margaret Wilson | 36 | Wife | — | Maryland |
| 65 | Margaret D. Wilson | 17 | Daughter | — | Maryland |
| 66 | Reginald Jr. Wilson | 16 | Son | — | Maryland |
| 67 | Frederick Wilson | 12 | Son | — | Maryland |
| 68 | Donald Wilson | 11 | Son | — | Maryland |
| 69 | Robert Wilson | 6 | Son | — | Maryland |
| 70 | Monroe Freedom | 33 | Lodger | Salesman | Maryland |
| 71 | Frances Freedom | 31 | Lodger | — | Maryland |
| 72 | Robinson, Jerry Moved | None | Lodger | — | — |
| 73 | Robinson, Arlee Moved | None | Lodger | — | — |
| 74 | Felix Blair | 35 | Head | Chef Cook | Texas |
| 75 | Anne Blair | 29 | Wife | Beautician | Texas |
| 76 | Emily Patterson | 53 | Head | — | Virginia |
| 77 | Preston Hatch | 24 | Lodger | Mechanic | Maryland |
| 78 | Doris Hatch | 20 | Lodger | Servant | Maryland |
| 79 | Harvey Hatch | 1 | Lodger | — | Maryland |
| 80 | Bernard Hatch | 0 | Lodger | — | 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)