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John Mcdonald — 1930 US Census Record
Model Tree available1930 United States Federal Census · Denver, Colorado
Our Model Tree links this John Mcdonald across the 1920, 1930 and 1940 US Censuses in Denver, Colorado (XGBoost, ~Confirmed), with identified parents Samuel & Margaret — first a son (b.~1911), then head of a 3-person household.
Age 19
b. ~1911
Male
Son
Born: Colorado
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Denver, Colorado |
| 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 |
| Additional Details | |
| Occupation | Assistant Shipping |
| Industry | Tire Shop |
| Class of Worker | 6989 |
| Can Read/Write | Yes |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
| Occupation | Assistant Shipping |
| Township / Ward | Denver City |
| Est. Birth Year | ~1911 |
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 1930 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Virginia Aguilar | Daughter | — | 3 | ~1927 |
| Margaret Mcdonald | Head | — | 51 | ~1879 |
| John Mcdonald | Son | — | 19 | ~1911 |
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 |
1930
Denver, Colorado
Son, age 19
Denver, Colorado · implied b. ~1911 — 3 household members
| 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 |
Son, age 28
Denver-County, Colorado · implied b. ~1912 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| 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 Mcdonald 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 Mcdonald
Son · 1930 · age 19 · b. ~1911 · Colorado
★ You are viewing this record
Sibling
Virginia Aguilar
Sibling · 1930 · age 3
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
1930 US Federal Census — Denver, Colorado
Open full size
1930 US Federal Census — Denver, Colorado
Page Contents
4 people indexed on this census page (ia:1930:15thcensus234unit:0594)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Margaret Mcdonald | 51 | Head | Baker | Scotland |
| 52 | John Mcdonald THIS PERSON | 19 | Son | Assistant Shipping | Colorado |
| 53 | Virginia C Aguilar | 3 | Daughter | None | Colorado |
| 64 | James Morrissey | 47 | Head | None | Colorado |
Related Census Records
Pedigree Summary
John + 1 sibling
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 1930 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)