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.~1888), then head of a 7-person household.
Age 52
b. ~1888
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 | 52 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore city |
| 1935 Residence (County) | Baltimore City |
| Additional Details | |
| Class of Worker | 0 |
| Highest Grade | No 6 |
| 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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Pleasance Jones | Head | — | 44 | ~1896 |
| Emma Saunders | Other | — | 31 | ~1909 |
| Bessie West | Other | — | 22 | ~1918 |
| Mildred Saunders | Other | — | 10 | ~1930 |
| Daisy Harris | Other | — | 21 | ~1919 |
| Robert Saunders | Son | — | 29 | ~1911 |
| Mary Jones | Spouse | — | 52 | ~1888 |
Census Appearances
1920
Baltimore, Maryland
Spouse, age 32
Baltimore, Maryland · implied b. ~1888 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jones |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | Black |
| Age | 32 |
| 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 42
Baltimore, Maryland · implied b. ~1888 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jones |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | Black |
| Age | 42 |
| Marital Status | Married |
| Birthplace | Maryland |
| Age at First Marriage | 25 |
| 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 52
Baltimore-City-County, Maryland · implied b. ~1888 — 7 household members
| Surname | Jones |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | Black |
| Age | 52 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore city |
| 1935 Residence (County) | Baltimore City |
| Class of Worker | 0 |
| Highest Grade | No 6 |
| 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 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-t0627-01517-00427)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Morris Johnson | 17 | Head | — | Maryland |
| 2 | Pearl Brown | 18 | Granddaughter | — | Maryland |
| 3 | John Mcknight | 32 | Head | Laborer | Maryland |
| 4 | Billie (X) Mcknight | 20 | Wife | — | Maryland |
| 5 | Irma Mcknight | 10 | Daughter | — | Maryland |
| 6 | Foster White | 40 | Head | Window Washer | North Carolina |
| 7 | Emma (X) White | 32 | Wife | — | North Carolina |
| 8 | Harry Roger | 32 | Lodger | Laborer | Florida |
| 9 | Willie Sutton | 25 | Lodger | Laborer | North Carolina |
| 10 | Mamie Gillum | 45 | Head | — | North Carolina |
| 11 | George Gillum | 17 | Son | Dishwasher | Virginia |
| 12 | Martha Gillum | 16 | Daughter | — | South Carolina |
| 13 | Ethel Gillum | 16 | Daughter | — | Virginia |
| 14 | Helen Gillum | 10 | Daughter | — | Maryland |
| 15 | Mamie Gillum | 7 | Daughter | — | Maryland |
| 16 | Kemper Suddeth | 40 | Lodger | Laborer | Virginia |
| 17 | Charles Redding | 60 | Head | — | Maryland |
| 18 | Sara Redding | 45 | Wife | — | Maryland |
| 19 | Roland Redding | 34 | Son | — | Maryland |
| 20 | William Redding | 24 | Son | — | Maryland |
| 21 | Sina Bell Redding | 23 | Daughter | Beautician | Maryland |
| 22 | Mary Frances Redding | 21 | Daughter | Maid | Maryland |
| 23 | Pleasance Jones | 44 | Head | Porter | Maryland |
| 24 | Mary Jones THIS PERSON | 52 | Wife | — | Maryland |
| 25 | Robert Saunders | 29 | Son | Porter | Maryland |
| 26 | Emma Saunders | 31 | Step-daughter | — | Maryland |
| 27 | Mildred Saunders | 10 | Granddaughter | — | Maryland |
| 28 | Bessie West | 22 | Granddaughter | — | Maryland |
| 29 | Daisy Harris | 21 | Lodger | Packer | Maryland |
| 30 | Charles Francis | 53 | Head | — | Maryland |
| 31 | Emma Francis | 42 | Wife | — | Maryland |
| 32 | Odel Francis | 14 | Daughter | — | Maryland |
| 33 | Thelma Francis | 12 | Daughter | — | Maryland |
| 34 | George Edward | 60 | Head | — | South Carolina |
| 35 | L. G. Edward | 40 | Wife | Maid | South Carolina |
| 36 | Nellie Jackson | 10 | Granddaughter | — | Maryland |
| 37 | Cunney Woodyard | 40 | Head | Laborer | Maryland |
| 38 | Lula Woodyard | 48 | Wife | — | Georgia |
| 39 | Martha Quicklin | 12 | Granddaughter | — | Maryland |
| 40 | Rosie Richard | 26 | Lodger | Maid | Georgia |
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)