MJ
Mary Jackson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Baltimore-City-County, Maryland
Our Model Tree links this Mary Jackson across the 1920, 1930 and 1940 US Censuses in Baltimore-City-County, Maryland (XGBoost, ~Confirmed) — first a head (b.~1888), then head of a 8-person household.
Age 52
b. ~1888
Female
Head
Born: Maryland
Widowed
1940 Census Record Details
| Census Year | 1940 |
| Location | Baltimore-City-County, Maryland |
| Surname | Jackson |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | Black |
| Age | 52 |
| Marital Status | Widowed |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore City |
| 1935 Residence (County) | Baltimore City |
| Additional Details | |
| Class of Worker | 0 |
| Highest Grade | No 4 |
| 1935 Residence | Same place |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Township / Ward | Baltimore City |
| Est. Birth Year | ~1888 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Edna Jackson | Daughter | — | 18 | ~1922 |
| Mary Jackson | Head | — | 52 | ~1888 |
| Ruth Waters | Other | — | 26 | ~1914 |
| Clayton Waters | Son | — | 27 | ~1913 |
| James Jackson | Son | — | 26 | ~1914 |
| Roland Jackson | Son | — | 13 | ~1927 |
| Irvin Jackson | Son | — | 4 | ~1936 |
| Roy Jackson | Son | — | 12 | ~1928 |
Census Appearances
1920
Baltimore, Maryland
Other, age 32
Baltimore, Maryland · implied b. ~1888 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jackson |
| Given Name | Mary |
| Relationship to Head | Boarder |
| Sex | F |
| Color / Race | Black |
| Age | 32 |
| Marital Status | Married |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | Maid |
| Industry | Rag Factory |
| 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 42
Baltimore, Maryland · implied b. ~1888 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jackson |
| Given Name | Mary E. |
| Relationship to Head | Lodger |
| Sex | F |
| Color / Race | Black |
| Age | 42 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | Laundress |
| Industry | Private Family |
| Class of Worker | W |
| Can Read/Write | No |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Baltimore-City-County, Maryland
Head, age 52
Baltimore-City-County, Maryland · implied b. ~1888 — 8 household members
| Surname | Jackson |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | Black |
| Age | 52 |
| Marital Status | Widowed |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore City |
| 1935 Residence (County) | Baltimore City |
| Class of Worker | 0 |
| Highest Grade | No 4 |
| 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 Jackson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Jackson
Head · 1940 · age 52 · b. ~1888 · 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-t0627-01529-00295)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Dora Coleman | 45 | Wife | Laundress | Virginia |
| 2 | Henry Coleman | 14 | Son | — | Virginia |
| 3 | Dorothy Coleman | 8 | Daughter | — | Virginia |
| 4 | James Johnson | 39 | Head | Chauffeur | Maryland |
| 5 | Hellen Walker | 38 | Lodger | — | Wash. D.C. |
| 6 | Claudia Littlejohn | 59 | Lodger | Cook | Virginia |
| 7 | Thomas Cornish | 15 | Lodger | — | Maryland |
| 8 | Mahaley Gary | 56 | Lodger | Porter | Virginia |
| 9 | Mary Jackson THIS PERSON | 52 | Head | — | Maryland |
| 10 | Clayton Waters | 27 | Son | — | Maryland |
| 11 | James Jackson | 26 | Son | Porter | Maryland |
| 12 | Edna Jackson | 18 | Daughter | — | Maryland |
| 13 | Roland Jackson | 13 | Son | — | Maryland |
| 14 | Roy Jackson | 12 | Son | — | Maryland |
| 15 | Irvin Jackson | 4 | Son | — | Maryland |
| 16 | Ruth Waters | 26 | Daughter-in-law | Domestic | Maryland |
| 17 | Lonie Mckeever | 32 | Head | Washer | Virginia |
| 18 | Wilhelmena Mckeever | 34 | Wife | — | Georgia |
| 19 | Pauline Short | 52 | Head | Dishwasher | Virginia |
| 20 | Russell Short | 23 | Son | Bagger | Maryland |
| 21 | Ellen Short | 21 | Daughter | Cashier | Maryland |
| 22 | Ethel Short | 20 | Daughter | Helper | Maryland |
| 23 | James Short | 18 | Son | — | Maryland |
| 24 | Letitia Short | 17 | Daughter | — | Maryland |
| 25 | John Short | 15 | Son | — | Maryland |
| 26 | Kate Saunders | 26 | Lodger | Domestic | Virginia |
| 27 | Hellen Matthews | 41 | Head | Maid | Maryland |
| 28 | Bernice Palmer | 19 | Daughter | New Worker | Maryland |
| 29 | Olivia Yancey | 46 | Head | — | Maryland |
| 30 | Walter Anderson | 14 | Son | — | Maryland |
| 31 | Donald Anderson | 11 | Son | — | Maryland |
| 32 | Robert Anderson | 6 | Son | — | Maryland |
| 33 | Carrie Myles | 55 | Sister | — | Maryland |
| 34 | Lorenza Sheppard | 62 | Lodger | Packer | S. Carolina |
| 35 | Johnnie Campher | 49 | Lodger | Push Cart | Maryland |
| 36 | Myranda Mitchell | 55 | Head | — | Maryland |
| 37 | Joseph Mitchell | 52 | Husband | Laborer | Maryland |
| 38 | Caroline Mitchell | 68 | Sister | — | Virginia |
| 39 | Lucretia White | 29 | Head | — | Maryland |
| 40 | Wilhelmena White | 12 | 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)