MR
Mary Robertson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Jefferson-County, Alabama
Our Model Tree links this Mary Robertson across the 1930 and 1940 US Censuses in Jefferson-County, Alabama (XGBoost, ~Confirmed) — first a daughter (b.~1928), then head of a 9-person household.
Age 12
b. ~1928
Female
Daughter
Born: Alabama
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Jefferson-County, Alabama |
| Surname | Robertson |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Alabama |
| 1935 Residence (City) | Fairfield City |
| 1935 Residence (County) | Jefferson |
| Additional Details | |
| Industry | 0 |
| Highest Grade | No 7 |
| 1935 Residence | Same place |
| Birth State | Alabama |
| Birth Country | United States |
| Birthplace (normalized) | alabama |
| Township / Ward | Fairfield City |
| Est. Birth Year | ~1928 |
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 |
|---|---|---|---|---|
| Louie Robertson | Daughter | — | 14 | ~1926 |
| Mary Robertson | Daughter | — | 12 | ~1928 |
| Evelyn Robertson | Daughter | — | 20 | ~1920 |
| Robert Robertson | Head | — | 49 | ~1891 |
| Billy Robertson | Son | — | 4 | ~1936 |
| Jack Robertson | Son | — | 21 | ~1919 |
| Robert Robertson | Son | — | 18 | ~1922 |
| Harold Robertson | Son | — | 16 | ~1924 |
| Louie Robertson | Spouse | — | 44 | ~1896 |
Census Appearances
1930
Jefferson, Alabama
Daughter, age 1
Jefferson, Alabama · implied b. ~1929 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Robertson |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Alabama |
| Father's Birthplace | Canada-English |
| Mother's Birthplace | Alabama |
| Can Read/Write | Yes |
| Home Owned/Rented | No |
| Birth State | Alabama |
| Birth Country | United States |
| Birthplace (normalized) | alabama |
1940
Jefferson-County, Alabama
Daughter, age 12
Jefferson-County, Alabama · implied b. ~1928 — 9 household members
| Surname | Robertson |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Alabama |
| 1935 Residence (City) | Fairfield City |
| 1935 Residence (County) | Jefferson |
| Industry | 0 |
| Highest Grade | No 7 |
| 1935 Residence | Same place |
| Birth State | Alabama |
| Birth Country | United States |
| Birthplace (normalized) | alabama |
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 12 · b. ~1928 · Alabama
★ You are viewing this record
Sibling
Evelyn Robertson
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Jack Robertson
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Harold Robertson
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Robertson
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Louie Robertson
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Billy Robertson
Sibling · 1940 · age 4
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 — Jefferson-County, Alabama
Open full size
1940 US Federal Census — Jefferson-County, Alabama
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00047-00138)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | James Stritikus | 36 | Head | Owner | Greece |
| 2 | Georgia Stritikus | 25 | Wife | Cashier | Greece |
| 3 | Nick Bush | 24 | Lodger | Salesman | Greece |
| 4 | Edward Lorman | 47 | Head | Pushman | Ohio |
| 5 | Ruth Lorman | 46 | Wife | — | Alabama |
| 6 | Ruth Brown | 30 | Step-daughter | Calculator | Alabama |
| 7 | Ramon Custred | 7 | Grandson | — | Alabama |
| 8 | Reece Wilson | 45 | Head | Dentist | Alabama |
| 9 | Willie Wilson | 44 | Wife | — | Alabama |
| 10 | Robert Coats | 35 | Head | Foreman | Alabama |
| 11 | Hattie Coats | 35 | Wife | — | Alabama |
| 12 | Robert Coats | 9 | Son | — | Alabama |
| 13 | Lucius Golden | 59 | Head | Collector | Tennessee |
| 14 | Mattie Golden | 54 | Wife | Clerk | Tennessee |
| 15 | Joe Barkley | 33 | Head | Keeper | Alabama |
| 16 | Frances Barkley | 32 | Wife | — | Alabama |
| 17 | Joe Barkley | 5 | Son | — | Alabama |
| 18 | Hardy Riley | 27 | Lodger | Sheet Metal Worker | Alabama |
| 19 | Robert Robertson | 49 | Head | Shipping Clerk | Alabama |
| 20 | Louie Robertson | 44 | Wife | — | Alabama |
| 21 | Jack Robertson | 21 | Son | Marker | Alabama |
| 22 | Evelyn Robertson | 20 | Daughter | Typist | Alabama |
| 23 | Robert Robertson | 18 | Son | Salesman | Alabama |
| 24 | Harold Robertson | 16 | Son | Delivery Boy | Alabama |
| 25 | Louie Robertson | 14 | Daughter | — | Alabama |
| 26 | Mary Robertson THIS PERSON | 12 | Daughter | — | Alabama |
| 27 | Billy Robertson | 4 | Son | — | Alabama |
| 28 | Percy Totherow | 36 | Head | Owner | Alabama |
| 29 | Hazel Totherow | 33 | Wife | Cashier | Alabama |
| 30 | Tal Totherow | 62 | Father | Attendant | Alabama |
| 31 | Sarah O'Neil | 75 | Head | — | Wales |
| 32 | George O'Neil | 35 | Son | Electrician | Alabama |
| 33 | John Clark | 52 | Lodger | Machinist | Alabama |
| 34 | Hugh Boyd | 59 | Head | Accountant | Alabama |
| 35 | Georgia Boyd | 54 | Wife | — | Alabama |
| 36 | Eugene Boyd | 26 | Son | Pourer | Alabama |
| 37 | Mable Boyd | 20 | Daughter-in-law | — | Alabama |
| 38 | Caroline Boyd | 3 | Daughter-in-law | — | Alabama |
| 39 | Eugene Boyd | 1 | Son | — | Alabama |
| 40 | Herbert Jones | 40 | Head | Machinist | Alabama |
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)