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John Blair — 1920 US Census Record
Linked across censuses1920 United States Federal Census · Crawford, Pennsylvania
Our Model Tree links this John Blair across the 1900, 1910 and 1920 US Censuses in Crawford, Pennsylvania (XGBoost, ~Confirmed) — first a head (b.~1861), then head of a 5-person household.
Age 59
b. ~1861
Male
Head
Born: Pennsylvania
Married
1920 Census Record Details
| Census Year | 1920 |
| Location | Crawford, Pennsylvania |
| Surname | Blair |
| Given Name | John D |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 59 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Ireland |
| Additional Details | |
| Occupation | Farmer |
| Industry | General Farm |
| Class of Worker | OA |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | O |
| Home Free/Mortgaged | F |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Farmer |
| Township / Ward | West Fallowfield Township |
| Est. Birth Year | ~1861 |
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 1920 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Marion Blair | Daughter | — | 10 | ~1910 |
| Ruth Blair | Daughter | — | 12 | ~1908 |
| John Blair | Head | — | 59 | ~1861 |
| Harold Blair | Son | — | 13 | ~1907 |
| Emma Blair | Spouse | — | 53 | ~1867 |
Census Appearances
1900
Crawford, Pennsylvania
Head, age 41
Crawford, Pennsylvania · implied b. ~1859 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Blair |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| Birth Month | Dec |
| Birth Year | 1859 |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Occupation | Farmer |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1910
Crawford, Pennsylvania
Head, age 49
Crawford, Pennsylvania · implied b. ~1861 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Blair |
| Given Name | John H. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 49 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| Years Married | 8 |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Ireland |
| Occupation | Farmer |
| Industry | General Farm |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | English |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1920
Crawford, Pennsylvania
Head, age 59
Crawford, Pennsylvania · implied b. ~1861 — 5 household members
| Surname | Blair |
| Given Name | John D |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 59 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Ireland |
| Occupation | Farmer |
| Industry | General Farm |
| Class of Worker | OA |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | O |
| Home Free/Mortgaged | F |
| 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 John Blair across 3 US Census years (1900, 1910 and 1920) in Crawford, Pennsylvania, using XGBoost record linkage.
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This person
Anchor record
John Blair
Head · 1920 · age 59 · b. ~1861 · Pennsylvania
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1920 US Federal Census — Crawford, Pennsylvania
Open full size
1920 US Federal Census — Crawford, Pennsylvania
Page Contents
50 people indexed on this census page (ia:1920:14thcensusofpopu1555unit:0877)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Jessie G Berlin | 17 | Daughter | — | Pennsylvania |
| 2 | Vada R Berlin | 12 | Daughter | — | Pennsylvania |
| 3 | Arthur W Sheir | 52 | Head | Farmer | Ohio |
| 4 | Emma C Sheir | 45 | Wife | Superintendent | New York |
| 5 | Elmer F Anderson | 27 | Boarder | — | Pennsylvania |
| 6 | James Clark | 41 | Boarder | — | Pennsylvania |
| 7 | Emma Carr | 84 | Boarder | — | New York |
| 8 | Lafayette Ellis | 57 | Head | Farmer | Pennsylvania |
| 9 | Lucie L Ellis | 56 | Wife | — | Pennsylvania |
| 10 | Cash D Ellis | 52 | Head | Farmer | Pennsylvania |
| 11 | Lydia Ellis | 49 | Wife | — | Pennsylvania |
| 12 | Ellen M Ellis | 17 | Daughter | — | Pennsylvania |
| 13 | Clara D Ellis | 51 | Sister | — | Maine |
| 14 | Arthur Ellis | 50 | Head | Farmer | Pennsylvania |
| 15 | Estella G Ellis | 43 | Wife | — | Pennsylvania |
| 16 | Mary A Ray | 78 | Head | — | Pennsylvania |
| 17 | James Jack | 72 | Head | Farmer | Pennsylvania |
| 18 | Christie Jack | 71 | Wife | — | Pennsylvania |
| 19 | Elizabeth Jack | 39 | Daughter | Operator | Pennsylvania |
| 20 | Luigi Dabaldo | 50 | Head | Farmer | Italy |
| 21 | Felix Dabaldo | 47 | Wife | — | Italy |
| 22 | Joseph Dabaldo | 22 | Son | Farm Laborer | Italy |
| 23 | Adam Dabaldo | 19 | Son | Laborer | Italy |
| 24 | Patsy Dabaldo | 9 | Son | — | Michigan |
| 25 | Frank Dabaldo | 4 | Son | — | Michigan |
| 26 | Ernestina Chorgatio | 30 | Daughter | — | Italy |
| 27 | Santino Chorgatio | 11 | Grandson | Laborer | Italy |
| 28 | Unfinoino Chorgatio | 7 | Son | — | Italy |
| 29 | Valeria Chorgatio | 4 | — | — | Michigan |
| 30 | Mary Chorgatio | 2 | — | — | Michigan |
| 31 | John Chorgatio | 1 | — | — | Pennsylvania |
| 32 | Amos Carr | 64 | Head | Farmer | Pennsylvania |
| 33 | Mary E Carr | 62 | Wife | Saleswoman | Pennsylvania |
| 34 | Vinnie D Carr | 72 | Sister | Seamstress | Pennsylvania |
| 35 | Asa Blair | 48 | Head | Farmer | Pennsylvania |
| 36 | Lulu Blair | 45 | Wife | — | Pennsylvania |
| 37 | Robert L G Bays | 45 | Head | Farmer | Pennsylvania |
| 38 | Lydia M Bays | 45 | Wife | — | Pennsylvania |
| 39 | Ruth M Bays | 22 | Daughter | Teaching | Pennsylvania |
| 40 | Lucille Bays | 16 | Daughter | — | Pennsylvania |
| 41 | John D Blair THIS PERSON | 59 | Head | Farmer | Pennsylvania |
| 42 | Emma J Blair | 53 | Wife | — | Pennsylvania |
| 43 | Ruth E Blair | 12 | Daughter | — | Pennsylvania |
| 44 | Harold G Blair | 13 | Son | — | Pennsylvania |
| 45 | Marion Blair | 10 | Daughter | — | Pennsylvania |
| 46 | Gustav Schmidt | 56 | Head | Farmer | Germany |
| 47 | Anna Schmidt | 57 | Wife | — | Germany |
| 48 | Bertha Schmidt | 18 | Daughter | — | Illinois |
| 49 | Martha Schmidt | 16 | Daughter | — | Illinois |
| 50 | Fred Schmidt | 8 | Son | — | Illinois |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1920 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)