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John Macdonald — 1940 US Census Record
Model Tree available1940 United States Federal Census · Denver-County, Colorado
Our Model Tree links this John Macdonald across the 1920, 1930 and 1940 US Censuses in Denver-County, Colorado (XGBoost, ~Confirmed), with identified parents Samuel & Margaret — first a son (b.~1912), then head of a 6-person household.
Age 28
b. ~1912
Male
Son
Born: Colorado
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Denver-County, Colorado |
| Surname | Macdonald |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 28 |
| Marital Status | Single |
| Birthplace | Colorado |
| 1935 Residence (City) | City of Denver |
| 1935 Residence (County) | Denver |
| Additional Details | |
| Occupation | High Cellar |
| Industry | Packing House |
| Class of Worker | PW |
| Hours Worked | 32 |
| Income (1939) | 750 |
| Highest Grade | Hs 1 |
| 1935 Residence | Same House |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
| Occupation | High Cellar |
| Township / Ward | City Of Denver |
| Est. Birth Year | ~1912 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| George Macdonald | Son | — | 30 | ~1910 |
| Harold Macdonald | Son | — | 22 | ~1918 |
| Samuel Arthur | Head | — | 68 | ~1872 |
| Catherine Arthur | Spouse | — | 58 | ~1882 |
| John Macdonald | Son | — | 28 | ~1912 |
| Don Macdonald | Son | — | 32 | ~1908 |
Census Appearances
1920
Denver, Colorado
Son, age 9
Denver, Colorado · implied b. ~1911 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McDonald |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | Colorado |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Scotch |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
Son, age 19
Denver, Colorado · implied b. ~1911 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McDonald |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Colorado |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Occupation | Assistant Shipping |
| Industry | Tire Shop |
| Class of Worker | 6989 |
| Can Read/Write | Yes |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
1940
Denver-County, Colorado
Son, age 28
Denver-County, Colorado · implied b. ~1912 — 6 household members
| Surname | Macdonald |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 28 |
| Marital Status | Single |
| Birthplace | Colorado |
| 1935 Residence (City) | City of Denver |
| 1935 Residence (County) | Denver |
| Occupation | High Cellar |
| Industry | Packing House |
| Class of Worker | PW |
| Hours Worked | 32 |
| Income (1939) | 750 |
| Highest Grade | Hs 1 |
| 1935 Residence | Same House |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
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 Macdonald across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Samuel Arthur (~0.92 confidence) and mother Margaret Mcdonald (~0.92 confidence) and mother Catherine Arthur (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Samuel Arthur
b. ~1872
Source father
● Household
· direct · ~0.92
Mother
Margaret Mcdonald
b. ~1879
Source mother
● Household
· direct · ~0.92
Mother
Catherine Arthur
b. ~1882
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Macdonald
Son · 1940 · age 28 · b. ~1912 · Colorado
★ You are viewing this record
Sibling
Harold Macdonald
Sibling · 1940 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Don Macdonald
Sibling · 1940 · age 32
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
George Macdonald
Sibling · 1940 · age 30
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 — Denver-County, Colorado
Open full size
1940 US Federal Census — Denver-County, Colorado
Page Contents
33 people indexed on this census page (nara:1940:m-t0627-00493-00677)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Harold Ammerman | 19 | Head | Watchman | Colorado |
| 3 | Samuel Arthur | 68 | Head | — | East Ireland |
| 4 | Catherine Arthur | 58 | Wife | — | Scotland |
| 5 | Don Macdonald | 32 | Son | Watch-Man | Scotland |
| 6 | George Macdonald | 30 | Son | Killer | Scotland |
| 7 | John Macdonald THIS PERSON | 28 | Son | High Cellar | Colorado |
| 8 | Harold Macdonald | 22 | Son | Ski-Maker | Colorado |
| 9 | Glen Sheriel|Sherril | 34 | Head | Butcher | Colorado |
| 10 | Leona Sheriel|Sherril | 34 | Wife | — | Scotland |
| 11 | Dorothy Sheriel|Sherril | 14 | Daughter | — | Colorado |
| 12 | Roberta Sheriel|Sherril | 12 | Daughter | — | Colorado |
| 13 | Donald Sheriel|Sherril | 9 | Son | — | Colorado |
| 14 | Richard Sheriel|Sherril | 6 | Son | — | Colorado |
| 15 | Ralf Sheriel|Sherril | 3 | Son | — | Colorado |
| 17 | Frank Lenz | 37 | Head | Contractor | Colorado |
| 18 | Mildred A. Lenz | 25 | Wife | — | Pennsylvania |
| 19 | Frederick Lenz | 0 | Son | — | Colorado |
| 20 | Henry Lenz | 37 | Head | Contractor | Colorado |
| 21 | Anna Lenz | 72 | Mother | — | Germany |
| 23 | Ade J. Laufonfield|Laufenfield | 18 | Head | Soda Paddy | Oklahoma |
| 25 | Winifred B. Roe | 62 | Head | — | Kentucky |
| 26 | Ebert A. Baker | 56 | Lodger | Storage Business | Wisconsin |
| 28 | Luther V. Haskins | 49 | Head | Contractor | Kentucky |
| 29 | Carmen A. Haskins | 30 | Wife | — | Texas |
| 32 | Morris Frodinowitz | 58 | Head | Retired | Rumania |
| 33 | Anna Frodinowitz | 54 | Wife | — | Rumania |
| 34 | Clement D. Clark | 32 | Head | Elevator Supt. | Nebraska |
| 35 | Emelie Clark | 31 | Wife | — | Nebraska |
| 36 | David T. Wilcox | 33 | Head | Credit-Man | Michigan |
| 37 | Sarah D. Wilcox | 32 | Wife | — | Michigan |
| 38 | Benjamin Berkman | 48 | Head | Fruit Corp. | Illinois |
| 39 | Rosie D. Berkman | 30 | Wife | Head | Colorado |
| 40 | Milton Rosenthal | 28 | Brother-in-law | Salesman | Colorado |
Related Census Records
Pedigree Summary
John + 3 siblings
Gen 1 · 3 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)