MJ
Mary Jefferson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Pittsylvania-County, Virginia
Our Model Tree links this Mary Jefferson across the 1930 and 1940 US Censuses in Pittsylvania-County, Virginia (XGBoost, ~Confirmed) — first a daughter (b.~1927), then head of a 9-person household.
Age 13
b. ~1927
Female
Daughter
Born: Virginia
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Pittsylvania-County, Virginia |
| Surname | Jefferson |
| Given Name | Mary P. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Virginia |
| 1935 Residence (City) | Pigg River Dist. |
| 1935 Residence (County) | Pittsylvania |
| Additional Details | |
| Highest Grade | No 5 |
| 1935 Residence | Same place |
| Birth State | Virginia |
| Birth Country | United States |
| Birthplace (normalized) | virginia |
| Township / Ward | Pigg River Dist |
| Est. Birth Year | ~1927 |
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 Mary | Age | Birth yr |
|---|---|---|---|---|
| Louise Jefferson | Daughter | — | 18 | ~1922 |
| Ben Jefferson | Head | — | 45 | ~1895 |
| Mary Jefferson | Spouse | — | 42 | ~1898 |
| Junius Jefferson | Son | — | 15 | ~1925 |
| James Jefferson | Son | — | 17 | ~1923 |
| Hubert Jefferson | Son | — | 8 | ~1932 |
| Gladys Jefferson | Daughter | — | 21 | ~1919 |
| Mary Jefferson | Daughter | — | 13 | ~1927 |
| Booker Jefferson | Son | — | 9 | ~1931 |
Census Appearances
1930
Pittsylvania, Virginia
Daughter, age 2
Pittsylvania, Virginia · implied b. ~1928 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jefferson |
| Given Name | Mary P. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Virginia |
| Father's Birthplace | Virginia |
| Mother's Birthplace | Virginia |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Virginia |
| Birth Country | United States |
| Birthplace (normalized) | virginia |
1940
Pittsylvania-County, Virginia
Daughter, age 13
Pittsylvania-County, Virginia · implied b. ~1927 — 9 household members
| Surname | Jefferson |
| Given Name | Mary P. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Virginia |
| 1935 Residence (City) | Pigg River Dist. |
| 1935 Residence (County) | Pittsylvania |
| Highest Grade | No 5 |
| 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 Mary Jefferson across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Jefferson
Daughter · 1940 · age 13 · b. ~1927 · Virginia
★ You are viewing this record
Sibling
Louise Jefferson
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Jefferson
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Junius Jefferson
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Hubert Jefferson
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Booker Jefferson
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Gladys Jefferson
Sibling · 1940 · age 21
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-t0627-04283-00837)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Ruby S. Miller | 11 | Daughter | — | Virginia |
| 42 | Kate V. Miller | 10 | Daughter | — | Virginia |
| 43 | James C. Miller | 2 | Son | — | Virginia |
| 44 | Conard O. Briggs | 27 | Head | Operator | North Carolina |
| 45 | Vera A. Briggs | 28 | Wife | — | Virginia |
| 46 | James M. Simpson | 58 | Head | Farming | Virginia |
| 47 | Minerva H. Simpson | 58 | Wife | — | Virginia |
| 48 | Velma Simpson | 13 | Daughter | — | Virginia |
| 49 | Bonny Simpson | 13 | Daughter | — | Virginia |
| 50 | Laura G. Simpson | 18 | Son | Laborer | Virginia |
| 51 | Ben J. Jefferson | 45 | Head | Farming | Virginia |
| 52 | Mary J. Jefferson | 42 | Wife | — | Virginia |
| 53 | Gladys V. Jefferson | 21 | Daughter | — | Virginia |
| 54 | Louise A. Jefferson | 18 | Daughter | — | Virginia |
| 55 | James W. Jefferson | 17 | Son | Laborer | Virginia |
| 56 | Junius E. Jefferson | 15 | Son | Laborer | Virginia |
| 57 | Mary P. Jefferson THIS PERSON | 13 | Daughter | — | Virginia |
| 58 | Booker M. Jefferson | 9 | Son | — | Virginia |
| 59 | Hubert O. Jefferson | 8 | Son | — | Virginia |
| 60 | John G. Reynolds | 44 | Head | Laborer | Virginia |
| 61 | Novella Reynolds | 36 | Wife | — | Virginia |
| 62 | Dulice M. Reynolds | 15 | Daughter | — | Virginia |
| 63 | Henry D. Reynolds | 7 | Son | — | Virginia |
| 64 | Billard J. Reynolds | 1 | Son | — | Virginia |
| 65 | Hammet D. R. Shields | 57 | Head | Farming | Virginia |
| 66 | Casie Shields | 50 | Wife | — | Virginia |
| 67 | Mildred Shields | 20 | Daughter | — | Virginia |
| 68 | Mann Reynolds | 40 | Head | Farming | Virginia |
| 69 | Dora Reynolds | 40 | Wife | — | Virginia |
| 70 | Thomas Leo Reynolds | 30 | Nephew | Laborer | Virginia |
| 71 | Wiley Johnson | 60 | Lodger | Laborer | Virginia |
| 72 | Lillie Buck | 47 | Head | — | Virginia |
| 73 | Herbert E. Buck | 24 | Son | Operator | Virginia |
| 74 | Guy G. Buck | 22 | Son | Operator | Virginia |
| 75 | Nat D. Jefferson | 57 | Head | Farming | Virginia |
| 76 | Mae E. Jefferson | 22 | Daughter | — | Virginia |
| 77 | Gallie A. Jefferson | 18 | Daughter | — | Virginia |
| 78 | John H. Jefferson | 17 | Son | Laborer | Virginia |
| 79 | Oscar Jefferson | 45 | Brother | Laborer | Virginia |
| 80 | Hattie R. Helms | 67 | Head | — | 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)