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Mary Blair — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Berkshire-County, Massachusetts
Our Model Tree links this Mary Blair across the 1920, 1930 and 1940 US Censuses in Berkshire-County, Massachusetts (XGBoost, ~Confirmed) — first a head (b.~1883), then head of a 5-person household.
Age 57
b. ~1883
Female
Head
Born: Connecticut
Widowed
1940 Census Record Details
| Census Year | 1940 |
| Location | Berkshire-County, Massachusetts |
| Surname | Blair |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 57 |
| Marital Status | Widowed |
| Birthplace | Connecticut |
| 1935 Residence (City) | Pittsfield |
| 1935 Residence (County) | Berkshire |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | Connecticut |
| Birth Country | United States |
| Birthplace (normalized) | connecticut |
| Township / Ward | Pittsfield |
| Est. Birth Year | ~1883 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Blair | Daughter | — | 20 | ~1920 |
| Mary Blair | Head | — | 57 | ~1883 |
| Walter Blair | Son | — | 32 | ~1908 |
| William Blair | Son | — | 27 | ~1913 |
| John Blair | Son | — | 22 | ~1918 |
Census Appearances
1920
Berkshire, Massachusetts
Spouse, age 34
Berkshire, Massachusetts · implied b. ~1886 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Blair |
| Given Name | Mary E. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 34 |
| Marital Status | Married |
| Birthplace | Connecticut |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Ireland |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Connecticut |
| Birth Country | United States |
| Birthplace (normalized) | connecticut |
1930
Berkshire, Massachusetts
Other, age 47
Berkshire, Massachusetts · implied b. ~1883 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Blair |
| Given Name | Mary E |
| Relationship to Head | Wife-H |
| Sex | F |
| Color / Race | White |
| Age | 47 |
| Marital Status | Married |
| Birthplace | Connecticut |
| Age at First Marriage | 19 |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | Irish Free State |
| Can Read/Write | Yes |
| Birth State | Connecticut |
| Birth Country | United States |
| Birthplace (normalized) | connecticut |
1940
Berkshire-County, Massachusetts
Head, age 57
Berkshire-County, Massachusetts · implied b. ~1883 — 5 household members
| Surname | Blair |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 57 |
| Marital Status | Widowed |
| Birthplace | Connecticut |
| 1935 Residence (City) | Pittsfield |
| 1935 Residence (County) | Berkshire |
| Income (1939) | 0 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | Connecticut |
| Birth Country | United States |
| Birthplace (normalized) | connecticut |
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 57 · b. ~1883 · Massachusetts
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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 — Berkshire-County, Massachusetts
Open full size
1940 US Federal Census — Berkshire-County, Massachusetts
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01570-00124)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Mary Blair THIS PERSON | 57 | Head | — | Connecticut |
| 2 | Walter Blair | 32 | Son | Grain Man | Connecticut |
| 3 | William Blair | 27 | Son | Finisher | Massachusetts |
| 4 | John Blair | 22 | Son | Tanner | Massachusetts |
| 5 | Mary Blair | 20 | Daughter | End Splicer | Massachusetts |
| 6 | Charles Christiansen | 57 | Head | Assembler | New York |
| 7 | Harriett Christiansen | 62 | Wife | — | Canada-English |
| 8 | Harry Hendrickson | 40 | Head | Carpenter | Massachusetts |
| 9 | Marguerite Hendrickson | 35 | Wife | — | New York |
| 10 | Ruth Hendrickson | 15 | Daughter | — | Massachusetts |
| 11 | Elinor Hendrickson | 14 | Daughter | — | Massachusetts |
| 12 | Joyce Hendrickson | 12 | Daughter | — | Massachusetts |
| 13 | Shirley Hendrickson | 10 | Daughter | — | Massachusetts |
| 14 | Henry Hendrickson | 4 | Son | — | Massachusetts |
| 15 | Nancy Hendrickson | 2 | Daughter | — | Massachusetts |
| 16 | Mary E. Martin | 67 | Head | — | Massachusetts |
| 17 | Edward Martin | 25 | Son | Winder | Massachusetts |
| 18 | Clyde Waite | 39 | Head | Laborer | New York |
| 19 | Ruth Waite | 33 | Wife | Sewer | Massachusetts |
| 20 | Clyde Moon | 46 | Head | Janitor | Massachusetts |
| 21 | Gertrude Moon | 31 | Wife | — | Massachusetts |
| 22 | Robert Moon | 17 | Son | — | Massachusetts |
| 23 | Richard Moon | 11 | Son | — | Massachusetts |
| 24 | Elizabeth Moon | 8 | Daughter | — | Massachusetts |
| 25 | Isabelle Moon | 3 | Daughter | — | Massachusetts |
| 26 | Joseph Lavelle | 45 | Head | Superintendent | Massachusetts |
| 27 | Laura Lavelle | 41 | Wife | — | Massachusetts |
| 28 | Alfred Lavelle | 19 | Son | Spool Room | Massachusetts |
| 29 | Mildred Lavelle | 18 | Daughter | Sales Girl | Massachusetts |
| 30 | Constance Lavelle | 17 | Daughter | — | Massachusetts |
| 31 | Anna Lavelle | 10 | Daughter | — | Massachusetts |
| 32 | Josephine Lavelle | 7 | Daughter | — | Massachusetts |
| 33 | William Tuchy | 60 | Head | Wiper | Massachusetts |
| 34 | Nora Tuchy | 53 | Wife | — | Massachusetts |
| 35 | W. Eugene Tuchy | 23 | Son | Toggler | Massachusetts |
| 36 | Daniel Tuchy | 20 | Son | Press Feeder | Massachusetts |
| 37 | Frances Tuchy | 15 | Daughter | — | Massachusetts |
| 38 | Richard Ringle | 37 | Head | Printer | Massachusetts |
| 39 | Irene Ringle | 37 | Wife | — | Massachusetts |
| 40 | Mary Ringle | 1 | Daughter | — | Massachusetts |
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)