MJ
Mary Jones — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Baltimore-City-County, Maryland
Our Model Tree links this Mary Jones across the 1920, 1930 and 1940 US Censuses in Baltimore-City-County, Maryland (XGBoost, ~Confirmed) — first a spouse (b.~1896), then head of a 5-person household.
Age 44
b. ~1896
Female
Spouse
Born: Maryland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Baltimore-City-County, Maryland |
| Surname | Jones |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | Black |
| Age | 44 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore City |
| 1935 Residence (County) | Baltimore City |
| Additional Details | |
| Highest Grade | G 7 |
| 1935 Residence | Same place |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Township / Ward | Baltimore City |
| Est. Birth Year | ~1896 |
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 Mary | Age | Birth yr |
|---|---|---|---|---|
| Shirley Distance | Daughter | — | 5 | ~1935 |
| Ernest Jones | Head | — | 48 | ~1892 |
| Charles Distance | Other | — | 6 | ~1934 |
| Irvin Smith | Other | — | 15 | ~1925 |
| Mary Jones | Spouse | — | 44 | ~1896 |
Census Appearances
1920
Baltimore, Maryland
Other, age 22
Baltimore, Maryland · implied b. ~1898 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jones |
| Given Name | Mary |
| Relationship to Head | Servant |
| Sex | F |
| Color / Race | Black |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | Servant |
| 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 33
Baltimore, Maryland · implied b. ~1897 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jones |
| Given Name | Mary |
| Relationship to Head | Wife-H |
| Sex | F |
| Color / Race | Black |
| Age | 33 |
| Marital Status | Married |
| Birthplace | Maryland |
| Age at First Marriage | 30 |
| 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 44
Baltimore-City-County, Maryland · implied b. ~1896 — 5 household members
| Surname | Jones |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | Black |
| Age | 44 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore City |
| 1935 Residence (County) | Baltimore City |
| Highest Grade | G 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 Mary Jones across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Jones
Spouse · 1940 · age 44 · b. ~1896 · 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-t0627-01512-00898)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Bennie R. Johnson | 34 | Head | Porter | Maryland |
| 42 | Mildred V. Johnson | 33 | Wife | Folder | Maryland |
| 43 | James Johnson | 10 | Son | — | Maryland |
| 44 | Bernadine Johnson | 6 | Daughter | — | Maryland |
| 45 | Walter Atkins | 52 | Head | Stevedore | Virginia |
| 46 | Lilly Atkins | 38 | Wife | — | Virginia |
| 47 | Elizabeth Atkins | 17 | Daughter | — | Maryland |
| 48 | Ernestine Atkins | 15 | Daughter | — | Maryland |
| 49 | Alice Atkins | 14 | Daughter | — | Maryland |
| 50 | Doris Atkins | 11 | Daughter | — | Maryland |
| 51 | Lillian Atkins | 9 | Daughter | — | Maryland |
| 52 | Grace Atkins | 7 | Daughter | — | Maryland |
| 53 | Herbert Collins | 50 | Head | Operator | Trinidad |
| 54 | Olive Collins | 35 | Wife | — | Virginia |
| 55 | Donald Collins | 10 | Son | — | Maryland |
| 56 | Geraldine Collins | 9 | Daughter | — | Maryland |
| 57 | Peggy Collins | 4 | Daughter | — | Maryland |
| 58 | Lizzie Randolph | 49 | Head | Housework | Maryland |
| 59 | Lillian Ellis | 25 | Cousin | Presser | Maryland |
| 60 | Florence Johnson | 32 | Lodger | — | Maryland |
| 61 | Ernest Jones | 48 | Head | — | Maryland |
| 62 | Mary Jones THIS PERSON | 44 | Wife | — | Maryland |
| 63 | Charles E. Distance | 6 | Nephew | — | Maryland |
| 64 | Shirley Distance | 5 | Daughter | — | Maryland |
| 65 | Irvin M. Smith | 15 | Nephew | — | Maryland |
| 66 | Gertrude Lovell | 56 | Head | Housework | Maryland |
| 67 | Helen Tunstall | 27 | Head | Laundress | Maryland |
| 68 | Robert Tunstall | 33 | Husband | Bus Boy | Maryland |
| 69 | Margaret Jones | 22 | Lodger | Presser | North Carolina |
| 70 | Daniel Evans | 20 | Lodger | New Worker | North Carolina |
| 71 | Nathan Lewis | 53 | Head | Unskilled Labour | Virginia |
| 72 | Carrie Lewis | 52 | Wife | — | Maryland |
| 73 | Earl Goodman | 48 | Son-in-law | Painter | Panama Canal Zone |
| 74 | Virginia Goodman | 22 | Daughter | Housework | Maryland |
| 75 | Nathan Jr. Lewis | 22 | Son | Unskilled Labour | Maryland |
| 76 | Anna Lewis | 24 | Daughter-in-law | — | Maryland |
| 77 | Malellie Lewis | 9 | Grandson | — | Maryland |
| 78 | Mary Lewis | 7 | Daughter | — | Maryland |
| 79 | Archie Bennett | 29 | Head | Cook | Maryland |
| 80 | Mildred Bennett | 18 | Wife | — | 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)