BJ
Betty Jones — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Baltimore-City-County, Maryland
Our Model Tree links this Betty Jones across the 1930 and 1940 US Censuses in Baltimore-City-County, Maryland (XGBoost, ~Confirmed) — first a daughter (b.~1930), then head of a 8-person household.
Age 10
b. ~1930
Female
Daughter
Born: Maryland
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Baltimore-City-County, Maryland |
| Surname | Jones |
| Given Name | Betty |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | Black |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore |
| 1935 Residence (County) | Baltimore City |
| Additional Details | |
| Highest Grade | No 5 |
| 1935 Residence | Same place |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Township / Ward | Baltimore |
| Est. Birth Year | ~1930 |
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 Betty | Age | Birth yr |
|---|---|---|---|---|
| Mary Jones | Daughter | — | 19 | ~1921 |
| Josephine Jones | Daughter | — | 15 | ~1925 |
| Laura Jones | Daughter | — | 18 | ~1922 |
| Betty Jones | Daughter | — | 10 | ~1930 |
| John Jones | Head | — | 45 | ~1895 |
| Bertram Jones | Son | — | 12 | ~1928 |
| William Jones | Son | — | 8 | ~1932 |
| Josephine Jones | Spouse | — | 38 | ~1902 |
Census Appearances
1930
X, Maryland
Daughter, age
X, Maryland · implied b. ~1930 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jones |
| Given Name | Betty |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 0 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Virginia |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Baltimore-City-County, Maryland
Daughter, age 10
Baltimore-City-County, Maryland · implied b. ~1930 — 8 household members
| Surname | Jones |
| Given Name | Betty |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | Black |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore |
| 1935 Residence (County) | Baltimore City |
| Highest Grade | No 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 Betty Jones across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Betty Jones
Daughter · 1940 · age 10 · b. ~1930 · Maryland
★ You are viewing this record
Sibling
Bertram Jones
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Jones
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Laura Jones
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Josephine Jones
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Jones
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
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-t0627-01535-00194)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Essie Johnson | 27 | wife | Cleaning | Georgia |
| 42 | Polly A. Johnson | 5 | daughter | — | Georgia |
| 43 | Lorraine Johnson | 3 | daughter | — | Maryland |
| 44 | Edna Johnson | 2 | daughter | — | Maryland |
| 45 | Henry Johnson | 25 | head | Laborer | Maryland |
| 46 | Mozella Johnson | 18 | wife | — | Georgia |
| 47 | James Britton | 28 | head | Laborer | S. Carolina |
| 48 | Marie Britton | 25 | wife | — | S. Carolina |
| 49 | Moses Jennings | 35 | head | Laborer | Virginia |
| 50 | Ella Jennings | 25 | wife | Cleaning | Maryland |
| 51 | Samuel Jennings | 22 | brother | Laborer | Virginia |
| 52 | Annie King | 57 | head | — | S. Carolina |
| 53 | Helen Johnson | 30 | grand daughter | Cleaning | Maryland |
| 54 | Felostia Johnson | 11 | grand daughter | — | Maryland |
| 55 | Thomas Jr. Johnson | 3 | grandson | — | Maryland |
| 56 | Marie Graves | 18 | granddaughter | Skimmer | Maryland |
| 57 | Leon M. Graves | 0 | grandson | — | Maryland |
| 58 | William Downs | 61 | lodger | Laborer | Maryland |
| 59 | Sally Barnett | 55 | head | — | S. Carolina |
| 60 | Ella Barnett | 32 | daughter | Cleans | N. Carolina |
| 61 | Novella Barnett | 25 | daughter | Cleans | N. Carolina |
| 62 | Sadie Barnett | 21 | daughter | — | S. Carolina |
| 63 | Preston Hills | 34 | lodger | Truck Driver | Maryland |
| 64 | John Osborne | 63 | head | — | Alabama |
| 65 | Gracie Osborne | 62 | wife | — | Alabama |
| 66 | Arthur Robinson | 45 | lodger | Laborer | Virginia |
| 67 | John Jones | 45 | head | Laborer | Virginia |
| 68 | Josephine Jones | 38 | wife | — | N. Carolina |
| 69 | Mary Jones | 19 | daughter | Seamstress | Maryland |
| 70 | Laura Jones | 18 | daughter | Nurse-Helper | Maryland |
| 71 | Josephine Jones | 15 | daughter | — | Maryland |
| 72 | Bertram Jones | 12 | son | — | Maryland |
| 73 | Betty Jones THIS PERSON | 10 | daughter | — | Maryland |
| 74 | William Jones | 8 | son | — | Maryland |
| 75 | Walter Denmark | 45 | head | Laborer | Maryland |
| 76 | Norman Denmark | 22 | son | Helper | Maryland |
| 77 | Alverta Denmark | 19 | daughter | Seamstress | Maryland |
| 78 | Henry Denmark | 16 | son | Pan Washer | Maryland |
| 79 | Corza Denmark | 13 | daughter | — | Maryland |
| 80 | Daniel Denmark | 10 | son | — | 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)