JM
John Macdonald — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Alameda-County, California
Our Model Tree links this John Macdonald across the 1920, 1930 and 1940 US Censuses in Alameda-County, California (XGBoost, ~Confirmed) — first a head (b.~1888), then head of a 4-person household.
Age 52
b. ~1888
Male
Head
Born: Maine
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Alameda-County, California |
| Surname | MacDonald |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 52 |
| Marital Status | Married |
| Birthplace | Maine |
| 1935 Residence (City) | Hood River |
| 1935 Residence (County) | Hood River |
| Additional Details | |
| Occupation | Carpenter |
| Industry | Air Port |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 2000 |
| Highest Grade | 6 |
| 1935 Residence | Oregon |
| Birth State | Maine |
| Birth Country | United States |
| Birthplace (normalized) | maine |
| Occupation | Carpenter |
| Township / Ward | Brooklyn |
| Est. Birth Year | ~1888 |
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 |
|---|---|---|---|---|
| Donald Macdonald | Son | — | 14 | ~1926 |
| John Macdonald | Head | — | 52 | ~1888 |
| Maud Macdonald | Spouse | — | 58 | ~1882 |
| Barbara Macdonald | Daughter | — | 12 | ~1928 |
Census Appearances
1920
San Francisco, …
Other, age 34
San Francisco, California · implied b. ~1886 — 21 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McDonald |
| Given Name | John H. |
| Relationship to Head | Roomer |
| Sex | M |
| Color / Race | White |
| Age | 34 |
| Marital Status | Single |
| Birthplace | Maine |
| Father's Birthplace | Maine |
| Mother's Birthplace | Maine |
| Occupation | Clerk |
| Industry | Ship Yard |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Maine |
| Birth Country | United States |
| Birthplace (normalized) | maine |
1930
San Francisco, …
Other, age 42
San Francisco, California · implied b. ~1888 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McDonald |
| Given Name | John |
| Relationship to Head | Roomer |
| Sex | M |
| Color / Race | White |
| Age | 42 |
| Marital Status | Single |
| Birthplace | Maine |
| Father's Birthplace | Canada English |
| Mother's Birthplace | Canada English |
| Occupation | Engineer |
| Industry | Steam Shovel |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Birth State | Maine |
| Birth Country | United States |
| Birthplace (normalized) | maine |
1940
Alameda-County, California
Head, age 52
Alameda-County, California · implied b. ~1888 — 4 household members
| Surname | MacDonald |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 52 |
| Marital Status | Married |
| Birthplace | Maine |
| 1935 Residence (City) | Hood River |
| 1935 Residence (County) | Hood River |
| Occupation | Carpenter |
| Industry | Air Port |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 2000 |
| Highest Grade | 6 |
| 1935 Residence | Oregon |
| Birth State | Maine |
| Birth Country | United States |
| Birthplace (normalized) | maine |
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.
Show:
This person
Anchor record
John Macdonald
Head · 1940 · age 52 · b. ~1888 · California
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Alameda-County, California
Open full size
1940 US Federal Census — Alameda-County, California
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00436-00939)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Olga Browne | 52 | Wife | — | Illinois |
| 42 | Frederick Browne | 19 | Son | Gardner | Calif |
| 43 | Bernitt Browne | 15 | Daughter | — | Calif |
| 44 | Percy A Avery | 60 | Head | Clerk | England |
| 45 | Ida Avery | 54 | Wife | — | Wisconsin |
| 46 | Herbert Avery | 23 | Son | Welding | Canada Eng |
| 47 | Wm P Avery | 22 | Son | Warehouse | Canada Eng |
| 48 | John R Sears | 46 | Head | Conductor | Texas |
| 49 | Mary Sears | 39 | Wife | — | Calif |
| 50 | Jerlo Sears | 17 | Daughter | — | Calif |
| 51 | Robert Sears | 15 | Son | — | Calif |
| 52 | Joe Sears | 14 | Son | — | Calif |
| 53 | Mary J Phillips | 44 | Head | — | Calif |
| 54 | Walton Phillips | 14 | Grandson | — | Oregon |
| 55 | Duval Phillips | 12 | Grandson | Janitor | Oregon |
| 56 | Joe Veni | 40 | Head | — | Italy |
| 57 | Anna Veni | 29 | Wife | — | Italy |
| 58 | Josephine Veni | 3 | Daughter | — | Calif |
| 59 | — | None | — | — | — |
| 60 | John Stibler | 40 | Head | Baker | Germany |
| 61 | Frieda Stibler | 39 | Wife | — | Guatemala |
| 62 | Sonia Stibler | 9 | Daughter | — | Calif |
| 63 | Wm H Lovett | 74 | Head | — | England |
| 64 | Sara E Lovett | 62 | Wife | — | Ohio |
| 65 | Antone Fernandez | 47 | Head | Machinist | Portugal |
| 66 | Isabelle Fernandez | 43 | Wife | — | Honolulu |
| 67 | Evelyn Fernandez | 19 | Daughter | New Worker | Calif |
| 68 | Frank Valenga | 46 | Head | Captain | Calif |
| 69 | Belle Valenga | 40 | Wife | — | Washington |
| 70 | John Macdonald THIS PERSON | 52 | Head | Carpenter | Maine |
| 71 | Maud Macdonald | 58 | Wife | — | Illinois |
| 72 | Barbara Jean Macdonald | 12 | Daughter | — | Oregon |
| 73 | Donald Macdonald | 14 | Son | — | Oregon |
| 74 | John R Fullers | 29 | Head | Welder | Calif |
| 75 | Virginia Fullers | 24 | Wife | — | Calif |
| 76 | Caroline Beaven | 73 | Head | — | Minnesota |
| 77 | Maria Tegmeyer | 72 | Head | — | Germany |
| 78 | Jerome Subonigone | 32 | Head | Chauffeur | Calif |
| 79 | Juanita Subonigone | 31 | Wife | — | Louisiana |
| 80 | Jerome Subonigone | 4 | Son | — | Calif |
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)