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Martha Bell — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Baltimore-County, Maryland
Our Model Tree links this Martha Bell across the 1930 and 1940 US Censuses in Baltimore-County, Maryland (XGBoost, ~Confirmed) — first a daughter (b.~1929), then head of a 7-person household.
Age 11
b. ~1929
Female
Daughter
Born: Maryland
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Baltimore-County, Maryland |
| Surname | Bell |
| Given Name | Martha S. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | 12th Election District |
| 1935 Residence (County) | Baltimore |
| Additional Details | |
| Highest Grade | Yes 5 |
| 1935 Residence | Same House |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Township / Ward | 12Th Election District |
| Est. Birth Year | ~1929 |
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 Martha | Age | Birth yr |
|---|---|---|---|---|
| David Bell | Head | — | 52 | ~1888 |
| Martha Bell | Daughter | — | 11 | ~1929 |
| Mattie Bell | Spouse | — | 45 | ~1895 |
| Elizabeth Bell | Other | — | 66 | ~1874 |
| Jack Bell | Son | — | 15 | ~1925 |
| David Bell | Son | — | 18 | ~1922 |
| Catherine Bell | Daughter | — | 6 | ~1934 |
Census Appearances
1930
Baltimore, Maryland
Daughter, age 1
Baltimore, Maryland · implied b. ~1929 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Bell |
| Given Name | Martha S. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Kentucky |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Baltimore-County, Maryland
Daughter, age 11
Baltimore-County, Maryland · implied b. ~1929 — 7 household members
| Surname | Bell |
| Given Name | Martha S. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | 12th Election District |
| 1935 Residence (County) | Baltimore |
| Highest Grade | Yes 5 |
| 1935 Residence | Same House |
| 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 Martha Bell across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Martha Bell
Daughter · 1940 · age 11 · b. ~1929 · Maryland
★ You are viewing this record
Sibling
Catherine Bell
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Jack Bell
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
David Bell
Sibling · 1940 · age 18
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-County, Maryland
Open full size
1940 US Federal Census — Baltimore-County, Maryland
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01506-00199)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Anna E. Q. Davis | 44 | Wife | — | West Virginia |
| 2 | Arthur R. Berry | 22 | Son | Electric Welder | West Virginia |
| 3 | Ellen Mackey | 85 | Mother in law | — | Maryland |
| 4 | Frances Marie Berry | 14 | Daughter | — | Ohio |
| 5 | Otto F. Lewis | 62 | Head | Minister | Kansas |
| 6 | Julia Q. Lewis | 43 | Wife | — | Illinois |
| 7 | Ivarsa Lewis | 10 | Daughter | — | Oklahoma |
| 8 | Valdar Lewis | 6 | Son | — | Indiana |
| 9 | Sheila Lewis | 5 | Daughter | — | Indiana |
| 10 | Edith Lindell | 41 | Sister | Infant Nurse | Illinois |
| 11 | Ernest Farrell | 34 | Head | Rougher | Virginia |
| 12 | Magdalen D. Farrell | 24 | Wife | — | North Carolina |
| 13 | Mary Watson | 17 | Sister in law | Addresser | North Carolina |
| 14 | Paul J. Watson | 28 | Brother in law | Crane Operator | North Carolina |
| 15 | Linnie Watson | 50 | Mother in law | Laborer | North Carolina |
| 16 | Cecil Phillips | 37 | Head | Welder | Virginia |
| 17 | Jeanette W. Phillips | 33 | Wife | — | Maryland |
| 18 | Donald Phillips | 6 | Son | — | Maryland |
| 19 | Carol Phillips | 2 | Daughter | — | Maryland |
| 20 | Norbert Kellam | 26 | Lodger | Draftsman | Pennsylvania |
| 21 | Walter B. Hardy | 56 | Head | Purchasing Agent | Pennsylvania |
| 22 | Nell Q. Hardy | 56 | Wife | — | Pennsylvania |
| 23 | Alden Braddack | 47 | Head | Roller | Pennsylvania |
| 24 | Thelma Braddack | 36 | Wife | — | Maryland |
| 25 | Alden Jr. Braddack | 10 | Son | — | Maryland |
| 26 | Agnes Braddack | 8 | Daughter | — | Maryland |
| 27 | Charles Conrad | 51 | Head | Clerk | D. C. |
| 28 | Blanche Conrad | 52 | Wife | — | D. C. |
| 29 | William Kemp | 33 | Head | Shear Operator | Pennsylvania |
| 30 | Minnie O. Kemp | 29 | Wife | — | Ohio |
| 31 | Elmer W. Kemp | 9 | Son | — | Pennsylvania |
| 32 | Richard White | 40 | Head | Clerk Office | Ohio |
| 33 | Irene White | 45 | Wife | School Teacher | Pennsylvania |
| 34 | David F. Bell | 52 | Head | Galvanized Stocker | Maryland |
| 35 | Mattie A. Bell | 45 | Wife | — | Kentucky |
| 36 | David F. Jr. Bell | 18 | Son | — | Maryland |
| 37 | Jack A. Bell | 15 | Son | — | Maryland |
| 38 | Martha S. Bell THIS PERSON | 11 | Daughter | — | Maryland |
| 39 | Catherine E. Bell | 6 | Daughter | — | Maryland |
| 40 | Elizabeth Bell | 66 | Sister | Title Worker | 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)