MJ
Martha Johnson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Dinwiddie-County, Virginia
Our Model Tree links this Martha Johnson across the 1920, 1930 and 1940 US Censuses in Dinwiddie-County, Virginia (XGBoost, ~Confirmed), with identified parents David & James — first a daughter (b.~1913), then head of a 9-person household.
Age 27
b. ~1913
Female
Daughter
Born: Virginia
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Dinwiddie-County, Virginia |
| Surname | Johnson |
| Given Name | Martha |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 27 |
| Marital Status | Single |
| Birthplace | Virginia |
| 1935 Residence (City) | Rowanty District |
| 1935 Residence (County) | Dinwiddie |
| Additional Details | |
| Class of Worker | 0 |
| Highest Grade | No 2 |
| 1935 Residence | Same place |
| Birth State | Virginia |
| Birth Country | United States |
| Birthplace (normalized) | virginia |
| Township / Ward | Rowanty District |
| Est. Birth Year | ~1913 |
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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Martha | Age | Birth yr |
|---|---|---|---|---|
| Sarah Johnson | Daughter | — | 2 | ~1938 |
| Martha Johnson | Daughter | — | 27 | ~1913 |
| Cathaine Johnson | Daughter | — | 9 | ~1931 |
| David Johnson | Head | — | 65 | ~1875 |
| Thomas Jackson | Other | — | 17 | ~1923 |
| James Mason | Other | — | 16 | ~1924 |
| Waverly Johnson | Son | — | 4 | ~1936 |
| James Johnson | Son | — | 12 | ~1928 |
| Echonia Johnson | Spouse | — | 43 | ~1897 |
Census Appearances
1920
Dinwiddie, Virginia
Daughter, age 6
Dinwiddie, Virginia · implied b. ~1914 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Martha |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 6 |
| Marital Status | Single |
| Birthplace | Virginia |
| Father's Birthplace | Virginia |
| Mother's Birthplace | Virginia |
| Speaks English | Yes |
| Birth State | Virginia |
| Birth Country | United States |
| Birthplace (normalized) | virginia |
1930
Dinwiddie, Virginia
Daughter, age 16
Dinwiddie, Virginia · implied b. ~1914 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Martha |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Virginia |
| Father's Birthplace | Virginia |
| Mother's Birthplace | Virginia |
| Can Read/Write | Yes |
| Birth State | Virginia |
| Birth Country | United States |
| Birthplace (normalized) | virginia |
1940
Dinwiddie-County, Virginia
Daughter, age 27
Dinwiddie-County, Virginia · implied b. ~1913 — 9 household members
| Surname | Johnson |
| Given Name | Martha |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 27 |
| Marital Status | Single |
| Birthplace | Virginia |
| 1935 Residence (City) | Rowanty District |
| 1935 Residence (County) | Dinwiddie |
| Class of Worker | 0 |
| Highest Grade | No 2 |
| 1935 Residence | Same place |
| Birth State | Virginia |
| Birth Country | United States |
| Birthplace (normalized) | virginia |
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 Johnson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father David Johnson (~0.92 confidence) and father James Johnson (~0.92 confidence) and father James Johnson (~0.92 confidence) and mother Echonia Johnson (~0.92 confidence) and mother Frances Johnson (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
David Johnson
b. ~1875
Source father
● Household
· direct · ~0.92
Father
James Johnson
b. ~1876
Source father
● Household
· direct · ~0.92
Father
James Johnson
b. ~1887
Source father
● Household
· direct · ~0.92
Mother
Echonia Johnson
b. ~1897
Source mother
● Household
· direct · ~0.92
Mother
Frances Johnson
b. ~1875
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Martha Johnson
Daughter · 1940 · age 27 · b. ~1913 · Virginia
★ You are viewing this record
Sibling
Sarah Johnson
Sibling · 1940 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Waverly Johnson
Sibling · 1940 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Cathaine Johnson
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Johnson
Sibling · 1940 · age 12
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 — Dinwiddie-County, Virginia
Open full size
1940 US Federal Census — Dinwiddie-County, Virginia
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-04258-00386)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | John A. Connelly | 5 | Son | — | Virginia |
| 42 | Landon Connelly | 43 | Head | Farmer | Virginia |
| 43 | Sallie Connelly | 40 | Wife | — | Virginia |
| 44 | Landon H. Jr. Connelly | 3 | Son | — | Virginia |
| 45 | Irvin Street | 27 | Head | Farm Laborer | Virginia |
| 46 | Molly Street | 17 | Wife | Laundress | Virginia |
| 47 | Anna Ingram | 69 | Grandmother | — | Virginia |
| 48 | Emboy Johnson | 33 | Head | Road Laborer | Virginia |
| 49 | Celia Johnson | 29 | Wife | — | Virginia |
| 50 | Hugh Clee Johnson | 2 | Son | Road Laborer | Virginia |
| 51 | Junius Hardy | 76 | Head | — | Virginia |
| 52 | Martha Hardy | 68 | Wife | — | Virginia |
| 53 | Robert Taylor | 16 | Lodger | Laborer | Virginia |
| 54 | Isaiah Johnson | 33 | Head | Laborer | Virginia |
| 55 | Elizabeth Johnson | 28 | Wife | — | Virginia |
| 56 | Wilbert Johnson | 11 | Son | — | Virginia |
| 57 | Cathaine Johnson | 9 | Daughter | — | Virginia |
| 58 | Erlene Johnson | 6 | Daughter | — | Virginia |
| 59 | Kirk Johnson | 1 | Son | — | Virginia |
| 60 | Ernest E. Madison | 60 | Head | Farmer | Virginia |
| 61 | Percy Madison | 24 | Son | Log Cutter | Virginia |
| 62 | Webster Madison | 20 | Son | Farm Laborer | Virginia |
| 63 | Frank Madison | 17 | Son | — | Virginia |
| 64 | John Madison | 34 | Head | Farmer | Virginia |
| 65 | Emma Madison | 30 | Wife | — | Virginia |
| 66 | Arthur Person | 1 | Lodger | — | Virginia |
| 67 | David Johnson | 65 | Head | Farmer | Virginia |
| 68 | Echonia Johnson | 43 | Wife | — | Virginia |
| 69 | Martha Johnson THIS PERSON | 27 | Daughter | — | Virginia |
| 70 | James W. Johnson | 12 | Son | — | Virginia |
| 71 | Cathaine Johnson | 9 | Daughter | — | Virginia |
| 72 | Waverly Johnson | 4 | Son | — | Virginia |
| 73 | Sarah Johnson | 2 | Daughter | — | Virginia |
| 74 | Thomas W. Jackson | 17 | Step Son | Farm Laborer | Virginia |
| 75 | James Mason | 16 | Lodger | — | Virginia |
| 76 | Charney Ellis | 56 | Head | Farmer | Virginia |
| 77 | Victoria Ellis | 57 | Wife | — | Virginia |
| 78 | James Morgan | 18 | Step Son | Farm Laborer | Virginia |
| 79 | William Weaver | 25 | Son in law | Slab Ripper | Virginia |
| 80 | Cora Weaver | 23 | Step Daughter | — | Virginia |
Pedigree Summary
Martha + 4 siblings
Gen 1 · 5 parents
~0.92
Max depth 4 (1900–1950 window)
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)