JD
John Donaldson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Saginaw-County, Michigan
Our Model Tree links this John Donaldson across the 1920, 1930 and 1940 US Censuses in Saginaw-County, Michigan (XGBoost, ~Confirmed), with identified parents Albert & Albert — first a son (b.~1919), then head of a 4-person household.
Age 21
b. ~1919
Male
Son
Born: Michigan
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Saginaw-County, Michigan |
| Surname | Donaldson |
| Given Name | John R |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Michigan |
| 1935 Residence (County) | Saginaw |
| Additional Details | |
| Occupation | Automobile Plant |
| Industry | PW |
| Class of Worker | 1440 |
| Highest Grade | H 2 |
| 1935 Residence | 40 |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
| Occupation | Automobile Plant |
| Township / Ward | Saginaw City |
| Est. Birth Year | ~1919 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Albert Donaldson | Head | — | 50 | ~1890 |
| John Donaldson | Son | — | 21 | ~1919 |
| Laura Donaldson | Spouse | — | 44 | ~1896 |
| Elizabeth Donaldson | Daughter | — | 19 | ~1921 |
Census Appearances
1920
Saginaw, Michigan
Son, age 1
Saginaw, Michigan · implied b. ~1919 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Donaldson |
| Given Name | John R. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Michigan |
| Father's Birthplace | Michigan |
| Mother's Birthplace | Michigan |
| Occupation | none |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1930
Saginaw, Michigan
Son, age 11
Saginaw, Michigan · implied b. ~1919 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Donaldson |
| Given Name | John R. |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Michigan |
| Father's Birthplace | Michigan |
| Mother's Birthplace | Michigan |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1940
Saginaw-County, Michigan
Son, age 21
Saginaw-County, Michigan · implied b. ~1919 — 4 household members
| Surname | Donaldson |
| Given Name | John R |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Michigan |
| 1935 Residence (County) | Saginaw |
| Occupation | Automobile Plant |
| Industry | PW |
| Class of Worker | 1440 |
| Highest Grade | H 2 |
| 1935 Residence | 40 |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
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 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Albert Donaldson (~0.92 confidence) and father Albert Donaldson (~0.92 confidence) and father Albert Donaldson (~0.92 confidence) and mother Laura Donaldson (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Albert Donaldson
b. ~1890
Source father
● Household
· direct · ~0.92
Father
Albert Donaldson
b. ~1885
Source father
● Household
· direct · ~0.92
Father
Albert Donaldson
b. ~1882
Source father
● Household
· direct · ~0.92
Mother
Laura Donaldson
b. ~1896
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Donaldson
Son · 1940 · age 21 · b. ~1919 · Michigan
★ You are viewing this record
Sibling
Elizabeth Donaldson
Sibling · 1940 · age 19
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 — Saginaw-County, Michigan
Open full size
1940 US Federal Census — Saginaw-County, Michigan
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01812-00696)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Walter Dutmer|Dutmers | 2 | Son | — | Michigan |
| 42 | Herbert Dorr | 30 | Head | General | Michigan |
| 43 | Anna Dorr | 21 | Wife | — | Illinois |
| 44 | Jack Dorr | 5 | Son | — | Michigan |
| 45 | Frances Dorr | 3 | Daughter | — | Michigan |
| 46 | Lillian Smith | 31 | Head | 8 | New Hampshire |
| 47 | Jesse Spangler | 41 | Head | Charger | Ohio |
| 48 | Mable Spangler | 48 | Wife | — | Michigan |
| 49 | Velma Spangler | 15 | Daughter | — | Michigan |
| 50 | Thomas Durbin | 65 | Head | Retail Furniture | Ohio |
| 51 | Mary F Durbin | 65 | Wife | — | Ohio |
| 52 | Mary E Durbin | 26 | Daughter | Retail Dry Goods | Ohio |
| 53 | Herschel Blaisdell | 45 | Head | Automobile Plant | Michigan |
| 54 | Lorraine Blaisdell | 35 | Wife | — | Michigan |
| 55 | Harlan Blaisdell | 15 | Son | — | Michigan |
| 56 | Herschel Jr Blaisdell | 14 | Son | — | Michigan |
| 57 | Sharon Blaisdell | 12 | Daughter | — | Michigan |
| 58 | Robert Blaisdell | 10 | Son | — | Michigan |
| 59 | Arline Blaisdell | 6 | Daughter | — | Michigan |
| 60 | Mamie Montgomery | 54 | Head | — | Michigan |
| 61 | Howard Timpany | 38 | Head | Retail Ice Coal | Michigan |
| 62 | Bernice Timpany | 34 | Wife | — | Pennsylvania |
| 63 | William Timpany | 11 | Son | — | Michigan |
| 64 | William Timpany | 72 | Father | General | Michigan |
| 65 | Irene Schoenknecht | 17 | Head | Private Home | Michigan |
| 66 | Louis Veenstra | 38 | Head | Salesman | Holland |
| 67 | Agatha Veenstra | 31 | Wife | 0 | Iowa |
| 68 | Muriel Veenstra | 10 | Daughter | — | Michigan |
| 69 | Kathleen Veenstra | 7 | Daughter | — | Michigan |
| 70 | Lenora Veenstra | 4 | Daughter | — | Michigan |
| 71 | Albert Donaldson | 50 | Head | City Fire Dept | Michigan |
| 72 | Laura Donaldson | 44 | Wife | — | Michigan |
| 73 | John R Donaldson THIS PERSON | 21 | Son | Automobile Plant | Michigan |
| 74 | Elizabeth Donaldson | 19 | Daughter | — | Michigan |
| 75 | Myer Blumlo | 49 | Head | Auto Wrecking & Parts | Michigan |
| 76 | Ruth Blumlo | 46 | Wife | Pw | Germany |
| 77 | Jack Blumlo | 16 | Son | — | Michigan |
| 78 | David Blumlo | 10 | Son | — | Michigan |
| 79 | Charles Huette | 51 | Head | Retail Dairy | Michigan |
| 80 | Alma Huette | 44 | Wife | — | Michigan |
Pedigree Summary
John + 1 sibling
Gen 1 · 4 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)