RB
Robert Blair — 1940 US Census Record
Model Tree available1940 United States Federal Census · Erie-County, Pennsylvania
Our Model Tree links this Robert Blair across the 1920, 1930 and 1940 US Censuses in Erie-County, Pennsylvania (XGBoost, ~Confirmed), with identified parents Mary — first a head (b.~1893), then head of a 5-person household.
Age 47
b. ~1893
Male
Head
Born: Pennsylvania
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Erie-County, Pennsylvania |
| Surname | Blair |
| Given Name | Robert A. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 47 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | City of Erie |
| 1935 Residence (County) | Erie |
| Additional Details | |
| Occupation | General Superintendent |
| Industry | Pig Iron Mfg. |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 4000 |
| Highest Grade | 8 |
| 1935 Residence | Same House |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | General Superintendent |
| Township / Ward | City Of Erie |
| Est. Birth Year | ~1893 |
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 Robert | Age | Birth yr |
|---|---|---|---|---|
| Alice Jenkins | Other | — | 62 | ~1878 |
| Pearl Blair | Spouse | — | 42 | ~1898 |
| Robert Blair | Head | — | 47 | ~1893 |
| Alice Blair | Daughter | — | 14 | ~1926 |
| Donald Blair | Son | — | 11 | ~1929 |
Census Appearances
1920
Erie, Pennsylvania
Son, age 25
Erie, Pennsylvania · implied b. ~1895 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Blair |
| Given Name | Robert A |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Occupation | Laborer |
| Industry | Iron Works |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Scotch |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Erie, Pennsylvania
Head, age 37
Erie, Pennsylvania · implied b. ~1893 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Blair |
| Given Name | Robert A. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 37 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| Age at First Marriage | 27 |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Occupation | Chemist |
| Industry | Iron Works |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 8500 |
| Radio Set | R |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Erie-County, Pennsylvania
Head, age 47
Erie-County, Pennsylvania · implied b. ~1893 — 5 household members
| Surname | Blair |
| Given Name | Robert A. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 47 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | City of Erie |
| 1935 Residence (County) | Erie |
| Occupation | General Superintendent |
| Industry | Pig Iron Mfg. |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 4000 |
| Highest Grade | 8 |
| 1935 Residence | Same House |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
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 Robert Blair across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Mary Blair (~0.92 confidence). The pedigree spans 1 generation with 1 identified ancestor.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Mary Blair
b. ~1865
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Robert Blair
Head · 1940 · age 47 · b. ~1893 · Pennsylvania
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Erie-County, Pennsylvania
Open full size
1940 US Federal Census — Erie-County, Pennsylvania
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03647-00409)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | J. Glenn Hunter | 42 | Head | Tool Planner | Pennsylvania |
| 42 | Eunice Hunter | 42 | Wife | — | Pennsylvania |
| 43 | John Hunter | 16 | Son | — | Pennsylvania |
| 44 | Vivian Hunter | 14 | Daughter | — | Pennsylvania |
| 45 | June Hunter | 11 | Daughter | — | Pennsylvania |
| 46 | David Hunter | 9 | Son | — | Pennsylvania |
| 47 | Barbara Hunter | 2 | Daughter | — | Pennsylvania |
| 48 | Frank C. Brown | 59 | Head | Inspector | Pennsylvania |
| 49 | Effie Brown | 58 | Wife | — | Pennsylvania |
| 50 | Jack Ironfield | 26 | Head | Laborer Refrigerators | Pennsylvania |
| 51 | Josephine Ironfield | 25 | Wife | — | Pennsylvania |
| 52 | Charlotte Ironfield | 3 | Daughter | — | Pennsylvania |
| 53 | Edward J. Held | 44 | Head | Carpenter | Pennsylvania |
| 54 | Marion Held | 44 | Wife | — | Pennsylvania |
| 55 | Mary Held | 11 | Daughter | — | Pennsylvania |
| 56 | Robert Held | 7 | Son | — | Pennsylvania |
| 57 | Edith Fogle | 55 | Head | — | Pennsylvania |
| 58 | Florence E. Fogle | 28 | Daughter | Stenographer And Secretary | Pennsylvania |
| 59 | Theresa M. Calabrese | 23 | Lodger | Waitress | Pennsylvania |
| 60 | Albert Casey | 33 | Head | Helper Salesman | New York |
| 61 | Helen Casey | 29 | Wife | — | Indiana |
| 62 | Colleen Casey | 9 | Daughter | — | Pennsylvania |
| 63 | Albert Casey | 8 | Son | — | Pennsylvania |
| 64 | Helen Casey | 4 | Daughter | — | Pennsylvania |
| 65 | Joseph Borner | 29 | Head | Laborer Refrigerators | Pennsylvania |
| 66 | Margaret Borner | 27 | Wife | Assembling Toys | Pennsylvania |
| 67 | Ronald Borner | 5 | Son | — | Pennsylvania |
| 68 | Robert A. Blair THIS PERSON | 47 | Head | General Superintendent | Pennsylvania |
| 69 | Pearl R. Blair | 42 | Wife | — | Pennsylvania |
| 70 | Alice R. Blair | 14 | Daughter | — | Pennsylvania |
| 71 | Donald Blair | 11 | Son | — | Pennsylvania |
| 72 | Alice Jenkins | 62 | Mother-in-law | — | Pennsylvania |
| 73 | Kathryn Nulzar | 51 | Head | — | Ohio |
| 74 | August Hoffman | 66 | In-law | Bar Tender | Pennsylvania |
| 75 | Ellsworth Carlson | 32 | Lodger | Laborer Refrigerator | Pennsylvania |
| 76 | Louis H. Tave | 25 | Head | Joint Owner | Pennsylvania |
| 77 | Irene Tave | 22 | Wife | — | Pennsylvania |
| 78 | Judith A. Tave | 2 | Daughter | — | Pennsylvania |
| 79 | John Tave | 29 | Head | Joint Owner | Pennsylvania |
| 80 | Ruth Tave | 27 | Wife | — | Pennsylvania |
Pedigree Summary
Robert
Gen 1 · 1 parents
~0.92
Max depth 4 (1900–1950 window)
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)