MC
Mary Cobb — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Pittsylvania-County, Virginia
Our Model Tree links this Mary Cobb across the 1930 and 1940 US Censuses in Pittsylvania-County, Virginia (XGBoost, ~Confirmed) — first a daughter (b.~1921), then head of a 13-person household.
Age 19
b. ~1921
Female
Daughter
Born: Virginia
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Pittsylvania-County, Virginia |
| Surname | Cobb |
| Given Name | Mary A |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 19 |
| Marital Status | Married |
| Birthplace | Virginia |
| 1935 Residence (City) | Dan River |
| 1935 Residence (County) | Pittsylvania |
| Additional Details | |
| Highest Grade | No 5 |
| 1935 Residence | Virginia |
| Birth State | Virginia |
| Birth Country | United States |
| Birthplace (normalized) | virginia |
| Township / Ward | Dan River |
| Est. Birth Year | ~1921 |
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.
13 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Margaret Clark | Daughter | — | 11 | ~1929 |
| Lou Cobb | Daughter | — | 2 | ~1938 |
| Johnnie Clark | Son | — | 6 | ~1934 |
| Effie Clark | Spouse | — | 41 | ~1899 |
| Robert Clark | Head | — | 46 | ~1894 |
| Willie Cobb | Other | — | 22 | ~1918 |
| Robert Clark | Son | — | 9 | ~1931 |
| Head Davis | Other | — | — | |
| James Clark | Son | — | 2 | ~1938 |
| Barbara Clark | Daughter | — | 12 | ~1928 |
| Lynne Clark | Son | — | 21 | ~1919 |
| Mary Cobb | Daughter | — | 19 | ~1921 |
| Willie Clark | Daughter | — | 15 | ~1925 |
Census Appearances
1930
Pittsylvania, Virginia
Daughter, age 12
Pittsylvania, Virginia · implied b. ~1918 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cobb |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 12 |
| 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
Pittsylvania-County, Virginia
Daughter, age 19
Pittsylvania-County, Virginia · implied b. ~1921 — 13 household members
| Surname | Cobb |
| Given Name | Mary A |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 19 |
| Marital Status | Married |
| Birthplace | Virginia |
| 1935 Residence (City) | Dan River |
| 1935 Residence (County) | Pittsylvania |
| Highest Grade | No 5 |
| 1935 Residence | Virginia |
| 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 Mary Cobb across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Cobb
Daughter · 1940 · age 19 · b. ~1921 · Virginia
★ You are viewing this record
Sibling
Margaret Clark
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Barbara Clark
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Willie Clark
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lynne Clark
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lou Cobb
Sibling · 1940 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Clark
Sibling · 1940 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Johnnie Clark
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Clark
Sibling · 1940 · age 9
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 — Pittsylvania-County, Virginia
Open full size
1940 US Federal Census — Pittsylvania-County, Virginia
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-04283-00668)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Madaline Anderson | 25 | Wife | — | Virginia |
| 2 | Lena Anderson | 11 | Daughter | — | Virginia |
| 3 | Blanch Anderson | 11 | Daughter | — | Virginia |
| 4 | Fred Anderson | 9 | Son | — | Virginia |
| 5 | Leonard Anderson | 8 | Son | — | Virginia |
| 6 | Jerry Anderson | 5 | Son | — | Virginia |
| 7 | Annette Anderson | 3 | Daughter | — | Virginia |
| 8 | Lewis Hardy | 37 | Head | Farmer | Virginia |
| 9 | Lois A Hardy | 27 | Wife | — | Virginia |
| 10 | Marie Hardy | 11 | Daughter | — | Virginia |
| 11 | Homer Hardy | 8 | Son | — | Virginia |
| 12 | Edith Hardy | 3 | Daughter | — | Virginia |
| 13 | Aubrey B Fallen | 29 | Head | Laborer | Virginia |
| 14 | Hazel B Fallen | 20 | Wife | — | Virginia |
| 15 | Elbert B Fallen | 7 | Son | — | Virginia |
| 16 | James E Fallen | 6 | Son | — | Virginia |
| 17 | Mary A Fallen | 3 | Daughter | — | Virginia |
| 18 | Elijah Garrett | 55 | Head | Farmer | Virginia |
| 19 | Lillian Garrett | 47 | Wife | — | Virginia |
| 20 | Catherine Garrett | 19 | Daughter | Keeper | Virginia |
| 21 | Mattie B Garrett | 16 | Daughter | Helper | Virginia |
| 22 | Norman Garrett | 13 | Son | — | Virginia |
| 23 | John Wilson | 60 | Head | Farmer | Virginia |
| 24 | Marcenia Turner | 66 | Sister | — | Virginia |
| 25 | Robert L Clark | 46 | Head | Laborer | Virginia |
| 26 | Effie M Clark | 41 | Wife | — | Virginia |
| 27 | Lynne L Clark | 21 | Son | Laborer | Virginia |
| 28 | Willie M Clark | 15 | Daughter | — | Virginia |
| 29 | Barbara Clark | 12 | Daughter | — | Virginia |
| 30 | Margaret Clark | 11 | Daughter | — | Virginia |
| 31 | Robert Jr Clark | 9 | Son | — | Virginia |
| 32 | Johnnie Clark | 6 | Son | — | Virginia |
| 33 | James A Clark | 2 | Son | — | Virginia |
| 34 | Willie B Cobb | 22 | Boarder | Laborer | Virginia |
| 35 | Mary A Cobb THIS PERSON | 19 | Daughter | — | Virginia |
| 36 | Lou B Cobb | 2 | Daughter | — | Virginia |
| 37 | Head Davis | None | M | Farm | — |
| 38 | Aubrey Redd | 73 | Head | — | Virginia |
| 39 | Oma Redd | 65 | Wife | — | Virginia |
| 40 | Berkley Lewis | 25 | Head | Laborer | Virginia |
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)