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Mary Blair — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Guilford-County, North Carolina
Our Model Tree links this Mary Blair across the 1920, 1930 and 1940 US Censuses in Guilford-County, North Carolina (XGBoost, ~Confirmed) — first a head (b.~1889), then head of a 6-person household.
Age 51
b. ~1889
Female
Head
Born: North Carolina
Widowed
1940 Census Record Details
| Census Year | 1940 |
| Location | Guilford-County, North Carolina |
| Surname | Blair |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 51 |
| Marital Status | Widowed |
| Birthplace | North Carolina |
| 1935 Residence (City) | Greensboro City |
| 1935 Residence (County) | Guilford |
| Additional Details | |
| Class of Worker | 0 |
| Highest Grade | 7 |
| 1935 Residence | Same place |
| Birth State | North Carolina |
| Birth Country | United States |
| Birthplace (normalized) | north carolina |
| Township / Ward | Greensboro City |
| Est. Birth Year | ~1889 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Doris Blair | Daughter | — | 18 | ~1922 |
| Jean Blair | Daughter | — | 12 | ~1928 |
| Betty Blair | Daughter | — | 8 | ~1932 |
| Mary Blair | Head | — | 51 | ~1889 |
| Harold Blair | Son | — | 16 | ~1924 |
| Richard Blair | Son | — | 14 | ~1926 |
Census Appearances
1920
Guilford, North …
Spouse, age 30
Guilford, North Carolina · implied b. ~1890 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Blair |
| Given Name | Mayme |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 30 |
| Marital Status | Married |
| Birthplace | North Carolina |
| Father's Birthplace | North Carolina |
| Mother's Birthplace | North Carolina |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | North Carolina |
| Birth Country | United States |
| Birthplace (normalized) | north carolina |
1930
Guilford, North …
Spouse, age 41
Guilford, North Carolina · implied b. ~1889 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Blair |
| Given Name | Mamie |
| Relationship to Head | wife |
| Sex | F |
| Color / Race | White |
| Age | 41 |
| Marital Status | Married |
| Birthplace | North Carolina |
| Age at First Marriage | 21 |
| Father's Birthplace | North Carolina |
| Mother's Birthplace | North Carolina |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | North Carolina |
| Birth Country | United States |
| Birthplace (normalized) | north carolina |
1940
Guilford-County, North …
Head, age 51
Guilford-County, North Carolina · implied b. ~1889 — 6 household members
| Surname | Blair |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 51 |
| Marital Status | Widowed |
| Birthplace | North Carolina |
| 1935 Residence (City) | Greensboro City |
| 1935 Residence (County) | Guilford |
| Class of Worker | 0 |
| Highest Grade | 7 |
| 1935 Residence | Same place |
| Birth State | North Carolina |
| Birth Country | United States |
| Birthplace (normalized) | north carolina |
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 Blair across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Blair
Head · 1940 · age 51 · b. ~1889 · North Carolina
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Guilford-County, North Carolina
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1940 US Federal Census — Guilford-County, North Carolina
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-02919-01044)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Lelia Hutchinson | 50 | Head | — | Tennessee |
| 2 | Owen Tragdon | 39 | Head | Clerk | North Carolina |
| 3 | Zae Tragdon | 39 | Wife | — | Virginia |
| 4 | Edward Tragdon | 17 | Son | — | North Carolina |
| 5 | Jane Tragdon | 11 | Daughter | — | North Carolina |
| 6 | William Jackson | 54 | Boarder | — | North Carolina |
| 7 | Elvin Williams | 31 | Lodger | Clerk | North Carolina |
| 8 | Alvis Crawford | 32 | Head | Photo Engraver | North Carolina |
| 9 | Katherine Crawford | 26 | Wife | — | Virginia |
| 10 | Charles Crawford | 9 | Son | — | North Carolina |
| 11 | Alvis Jr. Crawford | 5 | Son | — | North Carolina |
| 12 | Tillman Corbett | 28 | Head | Clerk | Georgia |
| 13 | Helen Corbett | 22 | Wife | Operator | North Carolina |
| 14 | Hank Corbett | 2 | Son | — | North Carolina |
| 15 | Minnie Naval | 46 | Mother | — | Georgia |
| 16 | Wade Whitley | 49 | Head | Watchman | North Carolina |
| 17 | Rosetta Whitley | 43 | Wife | — | North Carolina |
| 18 | Dorothy Whitley | 19 | Daughter | Copper | North Carolina |
| 19 | Robert Whitley | 18 | Son | Roller | North Carolina |
| 20 | Burren Whitley | 15 | Son | — | North Carolina |
| 21 | Wade Jr. Whitley | 13 | Son | — | North Carolina |
| 22 | Sally Deese | 56 | Sister-in-law | — | North Carolina |
| 23 | John Porterfield | 35 | Head | Truck Driver | North Carolina |
| 24 | Julia Porterfield | 34 | Wife | Footer | North Carolina |
| 25 | Mary P. Jones | 50 | Head | — | Virginia |
| 26 | William P. Jones | 28 | Son | Minister | Pennsylvania |
| 27 | Ralph Beeham | 53 | Head | Trainman | North Carolina |
| 28 | Mary Blair THIS PERSON | 51 | Head | — | North Carolina |
| 29 | Doris Blair | 18 | Daughter | Folder | North Carolina |
| 30 | Harold Blair | 16 | Son | — | North Carolina |
| 31 | Richard Blair | 14 | Son | — | North Carolina |
| 32 | Jean Blair | 12 | Daughter | — | North Carolina |
| 33 | Betty Blair | 8 | Daughter | — | North Carolina |
| 34 | Selton Burns | 34 | Head | Legger | Tennessee |
| 35 | Annie Burns | 29 | Wife | — | North Carolina |
| 36 | Elizabeth Burns | 8 | Daughter | — | North Carolina |
| 37 | Joseph Burns | 5 | Son | — | North Carolina |
| 38 | Bill Scott | 26 | Lodger | Finisher | North Carolina |
| 39 | Normie Scott | 24 | Lodger | — | North Carolina |
Related Census Records
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)