JD
John Davidson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Indiana-County, Pennsylvania
Our Model Tree links this John Davidson across the 1920, 1930 and 1940 US Censuses in Indiana-County, Pennsylvania (XGBoost, ~Confirmed) — first a head (b.~1859), then head of a 3-person household.
Age 81
b. ~1859
Male
Head
Born: Scotland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Indiana-County, Pennsylvania |
| Surname | Davidson |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 81 |
| Marital Status | Married |
| Birthplace | Scotland |
| 1935 Residence (City) | Clymer Borough |
| 1935 Residence (County) | Indiana |
| Naturalization Status | Naturalized |
| Additional Details | |
| Industry | 0 |
| Class of Worker | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same house |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
| Township / Ward | Clymer Borough |
| Est. Birth Year | ~1859 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| John Davidson | Head | — | 81 | ~1859 |
| Robert Davidson | Son | — | 32 | ~1908 |
| Agnes Davidson | Spouse | — | 72 | ~1868 |
Census Appearances
1920
Indiana, Pennsylvania
Head, age 62
Indiana, Pennsylvania · implied b. ~1858 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Davidson |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 62 |
| Marital Status | Married |
| Birthplace | Scotland |
| Year of Immigration | 1880 |
| Naturalization Status | First papers filed |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Occupation | Miner |
| Industry | Coal |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Scotch |
| Home Owned/Rented | O |
| Home Free/Mortgaged | F |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
1930
Indiana, Pennsylvania
Head, age 70
Indiana, Pennsylvania · implied b. ~1860 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Davidson |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 70 |
| Marital Status | Married |
| Birthplace | Scotland |
| Naturalization Status | Naturalized |
| Year of Immigration | 1912 |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Can Read/Write | Yes |
| Mother Tongue | Scotch |
| Home Owned/Rented | R |
| Home Value / Rent | 8.25 |
| Radio Set | R |
| Veteran | No |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
1940
Indiana-County, Pennsylvania
Head, age 81
Indiana-County, Pennsylvania · implied b. ~1859 — 3 household members
| Surname | Davidson |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 81 |
| Marital Status | Married |
| Birthplace | Scotland |
| 1935 Residence (City) | Clymer Borough |
| 1935 Residence (County) | Indiana |
| Naturalization Status | Naturalized |
| Industry | 0 |
| Class of Worker | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same house |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
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 Davidson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
John Davidson
Head · 1940 · age 81 · b. ~1859 · Pennsylvania
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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 — Indiana-County, Pennsylvania
Open full size
1940 US Federal Census — Indiana-County, Pennsylvania
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03517-00150)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Anna Porto | 13 | Daughter | — | Pennsylvania |
| 42 | Sam Shaheen | 63 | Head | — | Syria |
| 43 | Mary Shaheen | 63 | Wife | — | Syria |
| 44 | Alice Shaheen | 23 | Daughter | Stenographer | Pennsylvania |
| 45 | Barbara Krizmanich | 30 | Daughter | — | Pennsylvania |
| 46 | Fredrick Kenston | 63 | Head | Stone Cutter | Pennsylvania |
| 47 | Elizabeth Kenston | 62 | Wife | — | Pennsylvania |
| 48 | Howard Kenston | 19 | Grandson | — | Pennsylvania |
| 49 | Blair Cupples | 60 | Head | Stone Cutter | Pennsylvania |
| 50 | Elizabeth Cupples | 63 | Wife | — | England |
| 51 | Norman Cupples | 27 | Son | Miner | Pennsylvania |
| 52 | Andrew G. Owrey | 59 | Head | Clergyman | Pennsylvania |
| 53 | Bertha J. Owrey | 50 | Wife | — | Pennsylvania |
| 54 | Andrew S. Owrey | 10 | Son | — | Pennsylvania |
| 55 | Francis M. Owrey | 9 | Son | — | Pennsylvania |
| 56 | Francis Wethi | 25 | Head | Machine Operator | Pennsylvania |
| 57 | Dorothy Wethi | 24 | Wife | — | Pennsylvania |
| 58 | Frances W. Wethi | 2 | Son | — | Pennsylvania |
| 59 | Maude Lovell | 60 | Mother-in-law | — | Pennsylvania |
| 60 | Charles H. Pearce | 66 | Head | Blacksmith | Pennsylvania |
| 61 | Laura M. Pearce | 57 | Wife | — | Pennsylvania |
| 62 | Lloyd Waugh | 50 | Head | Electrician | West Virginia |
| 63 | Frances Waugh | 50 | Wife | — | West Virginia |
| 64 | Anna Waugh | 17 | Daughter | — | West Virginia |
| 65 | William Waugh | 15 | Son | — | West Virginia |
| 66 | Stella Kerns | 50 | Sister-in-law | — | West Virginia |
| 67 | John Davidson THIS PERSON | 81 | Head | — | Scotland |
| 68 | Agnes Davidson | 72 | Wife | — | Scotland |
| 69 | Robert C. Davidson | 32 | Son | Manager | Scotland |
| 70 | Irvin E. Oakes | 26 | Head | Truck Driver | Pennsylvania |
| 71 | Violet Oakes | 25 | Wife | — | Pennsylvania |
| 72 | Richard E. Oakes | 3 | Son | — | Pennsylvania |
| 73 | Francis Oakes | 1 | Son | — | Pennsylvania |
| 74 | Frank Cam | 67 | Head | Miner | France |
| 75 | Elizabeth Cam | 65 | Wife | — | France |
| 76 | Michael Bertuzzi | 41 | Head | Laborer | Pennsylvania |
| 77 | Hannah Bertuzzi | 41 | Wife | — | Pennsylvania |
| 78 | Harold Bertuzzi | 17 | Son | — | Pennsylvania |
| 79 | John Bertuzzi | 13 | Son | — | Pennsylvania |
| 80 | George Bertuzzi | 8 | Son | — | Pennsylvania |
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)