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John Donaldson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cambria-County, Pennsylvania
Our Model Tree links this John Donaldson across the 1930 and 1940 US Censuses in Cambria-County, Pennsylvania (XGBoost, ~Confirmed) — first a son (b.~1925), then head of a 7-person household.
Age 15
b. ~1925
Male
Son
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cambria-County, Pennsylvania |
| Surname | Donaldson |
| Given Name | John M. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (County) | Cambria |
| Additional Details | |
| Industry | 0 |
| Highest Grade | No 6 |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Township / Ward | Jackson Twp |
| Est. Birth Year | ~1925 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Madeline Donaldson | Daughter | — | 10 | ~1930 |
| Thomas Donaldson | Son | — | 4 | ~1936 |
| Mary Donaldson | Daughter | — | 17 | ~1923 |
| Esthel Donaldson | Daughter | — | 18 | ~1922 |
| John Donaldson | Head | — | 42 | ~1898 |
| John Donaldson | Son | — | 15 | ~1925 |
| Mary Donaldson | Spouse | — | 38 | ~1902 |
Census Appearances
1930
Cambria, Pennsylvania
Son, age 5
Cambria, Pennsylvania · implied b. ~1925 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Donaldson |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Pennsylvania |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Cambria-County, Pennsylvania
Son, age 15
Cambria-County, Pennsylvania · implied b. ~1925 — 7 household members
| Surname | Donaldson |
| Given Name | John M. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (County) | Cambria |
| Industry | 0 |
| Highest Grade | No 6 |
| 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 Donaldson across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Donaldson
Son · 1940 · age 15 · b. ~1925 · Pennsylvania
★ You are viewing this record
Sibling
Esthel Donaldson
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Donaldson
Sibling · 1940 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Madeline Donaldson
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Donaldson
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Cambria-County, Pennsylvania
Open full size
1940 US Federal Census — Cambria-County, Pennsylvania
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03453-00438)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Ruth Elaine | 4 | Daughter | — | Pennsylvania |
| 2 | Father Archie | None | M | Labor | — |
| 3 | George Warner | 38 | Head | Miner | Pennsylvania |
| 4 | Mary Warner | 32 | Wife | — | Kansas |
| 5 | Walter Warner | 12 | Son | — | Pennsylvania |
| 6 | Haden Warner | 9 | Son | — | Pennsylvania |
| 7 | Daniel Warner | 5 | Son | — | Pennsylvania |
| 8 | Elizabeth Jacemeyer | 64 | Head | — | Pennsylvania |
| 9 | Delores Jacemeyer | 22 | Daughter | Sewer | Pennsylvania |
| 10 | Brother Walter | None | M | 0 | — |
| 11 | Valley Cook | 36 | Head | Miner | Pennsylvania |
| 12 | Priscilla Cook | 33 | Wife | — | Pennsylvania |
| 13 | William Cook | 16 | Son | — | Pennsylvania |
| 14 | Kemp Cook | 10 | Son | — | Pennsylvania |
| 15 | Priscilla Cook | 6 | Daughter | — | Pennsylvania |
| 16 | John Wilson | 51 | Head | Laborer | Pennsylvania |
| 17 | Bessie Wilson | 46 | Wife | Sewer | Pennsylvania |
| 18 | Francis Wilson | 28 | Son | Laborer | Pennsylvania |
| 19 | Ida Mae Wilson | 20 | Daughter | — | Pennsylvania |
| 20 | Paul Wilson | 19 | Son | New Worker | Pennsylvania |
| 21 | Ray Wilson | 17 | Son | — | Pennsylvania |
| 22 | Wanda Lou Wilson | 7 | Daughter | — | Pennsylvania |
| 23 | Wayne Thompson | 44 | Head | Miner | Pennsylvania |
| 24 | Ethel Thompson | 39 | Wife | — | Pennsylvania |
| 25 | Vivian Thompson | 14 | Daughter | — | Pennsylvania |
| 26 | Chester Thompson | 16 | Son | — | Pennsylvania |
| 27 | Frances Thompson | 13 | Daughter | — | Pennsylvania |
| 28 | Kemp Cook | 37 | Head | Miner | Pennsylvania |
| 29 | Margret Cook | 23 | Wife | — | Pennsylvania |
| 30 | Thomas Smith | 15 | Step brother | — | Pennsylvania |
| 31 | John Donaldson | 42 | Head | Coal Mine | Scotland |
| 32 | Mary Donaldson | 38 | Wife | — | Pennsylvania |
| 33 | Esthel Donaldson | 18 | Daughter | Maid | Pennsylvania |
| 34 | Mary Jane Donaldson | 17 | Daughter | — | Pennsylvania |
| 35 | John M. Donaldson THIS PERSON | 15 | Son | — | Pennsylvania |
| 36 | Madeline Donaldson | 10 | Daughter | — | Pennsylvania |
| 37 | Thomas Donaldson | 4 | Son | — | Pennsylvania |
| 38 | C. G. Price | 31 | Head | Miner | Pennsylvania |
| 39 | Dorothy Price | 26 | Wife | — | Pennsylvania |
| 40 | Junior Price | 6 | 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)