MR
Mary Robertson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Prince-William-County, Virginia
Our Model Tree links this Mary Robertson across the 1930 and 1940 US Censuses in Prince-William-County, Virginia (XGBoost, ~Confirmed) — first a daughter (b.~1920), then head of a 10-person household.
Age 20
b. ~1920
Female
Daughter
Born: Virginia
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Prince-William-County, Virginia |
| Surname | Robertson |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Virginia |
| 1935 Residence (City) | Manassas mag. dist. |
| 1935 Residence (County) | Prince William |
| Additional Details | |
| Highest Grade | H-1 |
| 1935 Residence | Same place |
| Birth State | Virginia |
| Birth Country | United States |
| Birthplace (normalized) | virginia |
| Township / Ward | Manassas Mag Dist |
| Est. Birth Year | ~1920 |
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.
10 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Rose Robertson | Daughter | — | 8 | ~1932 |
| Alice Robertson | Daughter | — | 14 | ~1926 |
| Lucy Robertson | Daughter | — | 16 | ~1924 |
| Mary Robertson | Daughter | — | 20 | ~1920 |
| E Robertson | Head | — | 57 | ~1883 |
| Richard Robertson | Son | — | 24 | ~1916 |
| Clem Robertson | Son | — | 17 | ~1923 |
| Grayton Robertson | Son | — | 11 | ~1929 |
| Paul Robertson | Son | — | 19 | ~1921 |
| Mamie Robertson | Spouse | — | 54 | ~1886 |
Census Appearances
1930
Prince William, …
Daughter, age 10
Prince William, Virginia · implied b. ~1920 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Robertson |
| Given Name | Mary A. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 10 |
| 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
Prince-William-County, Virginia
Daughter, age 20
Prince-William-County, Virginia · implied b. ~1920 — 10 household members
| Surname | Robertson |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Virginia |
| 1935 Residence (City) | Manassas mag. dist. |
| 1935 Residence (County) | Prince William |
| Highest Grade | H-1 |
| 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 Robertson across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Robertson
Daughter · 1940 · age 20 · b. ~1920 · Virginia
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Sibling
Rose Robertson
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Clem Robertson
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Richard Robertson
Sibling · 1940 · age 24
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lucy Robertson
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Alice Robertson
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Grayton Robertson
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Paul Robertson
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 — Prince-William-County, Virginia
Open full size
1940 US Federal Census — Prince-William-County, Virginia
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-04286-00424)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Cannie Robertson | 55 | Guest | — | Virginia |
| 2 | Susie Jeffries | 62 | Head | Farmer | Virginia |
| 3 | Lizzie Jeffries | 67 | Sister-in-law | — | Virginia |
| 4 | Wilson Crouch | 16 | Guest nephew | Truck Driver | Virginia |
| 5 | Elizabeth Crouch | 14 | Guest niece | — | Virginia |
| 6 | Jack Hereford | 55 | Head | Farmer | Virginia |
| 7 | Lolit Hereford | 39 | Wife | — | Virginia |
| 8 | Thomas Hereford | 11 | Son | — | Virginia |
| 9 | Marvin Hereford | 7 | Son | — | Virginia |
| 10 | Emma Hereford | 5 | Daughter | — | Virginia |
| 11 | Lolit Sandra Hereford | 0 | Daughter | — | Virginia |
| 12 | Arthur Yaskins | 58 | Head | Farmer | Virginia |
| 13 | Ella Yaskins | 53 | Wife | — | Virginia |
| 14 | Elizabeth Yaskins | 23 | Daughter | — | Virginia |
| 15 | Gladys Yaskins | 18 | Daughter | — | Virginia |
| 16 | James Yaskins | 15 | Son | Farm Laborer | Virginia |
| 17 | John Edward Yaskins | 11 | Son | — | Virginia |
| 18 | E. P. Robertson | 57 | Head | Farmer | Virginia |
| 19 | Mamie Robertson | 54 | Wife | — | Virginia |
| 20 | Richard Robertson | 24 | Son | Laborer | Virginia |
| 21 | Mary Robertson THIS PERSON | 20 | Daughter | — | Virginia |
| 22 | Paul Robertson | 19 | Son | Laborer | Virginia |
| 23 | Clem Robertson | 17 | Son | Laborer | Virginia |
| 24 | Lucy Robertson | 16 | Daughter | — | Virginia |
| 25 | Alice Robertson | 14 | Daughter | — | Virginia |
| 26 | Grayton Robertson | 11 | Son | — | Virginia |
| 27 | Rose Robertson | 8 | Daughter | — | Virginia |
| 28 | Mack S. Davis | 43 | Head | Farm Laborer | Virginia |
| 29 | Catherine Davis | 33 | Wife | — | Virginia |
| 30 | Curtis Brown | 29 | Head | Paper Hanger | Virginia |
| 31 | Judson Brown | 32 | Brother | Painter | Virginia |
| 32 | Irene Gray | 25 | Housekeeper | Housekeeper | Virginia |
| 33 | George C. Gibson | 73 | Head | Carpenter | Virginia |
| 34 | Mae S. Gibson | 69 | Wife | — | Virginia |
| 35 | Thomas J. Bettis | 43 | Head | Engineer | Virginia |
| 36 | Ruby Bettis | 43 | Wife | — | Virginia |
| 37 | Corbin Chester Bettis | 28 | Brother-in-law | — | Virginia |
| 38 | Arlen Crabill | 50 | Head | Carpenter Helper | Virginia |
| 39 | Lottie Crabill | 46 | Wife | — | Virginia |
| 40 | Bobby Crabill | 9 | Son | — | 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)