JD
John Donahue — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Alameda, California
Our Model Tree links this John Donahue across the 1930 and 1940 US Censuses in Alameda, California (XGBoost, ~Confirmed) — first a head (b.~1885), then head of a 10-person household.
Age 45
b. ~1885
Male
Head
Born: California
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Alameda, California |
| Surname | Donahue |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 45 |
| Marital Status | Married |
| Birthplace | California |
| Age at First Marriage | 25 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Additional Details | |
| Occupation | Clerk |
| Industry | Post Office |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 40 |
| Radio Set | R |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
| Occupation | Clerk |
| Township / Ward | Berkeley City |
| Est. Birth Year | ~1885 |
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.
10 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Alice Donahue | Daughter | — | 14 | ~1916 |
| Helen Donahue | Daughter | — | 6 | ~1924 |
| Rose Donahue | Daughter | — | 12 | ~1918 |
| John Donahue | Head | — | 45 | ~1885 |
| James Donahue | Son | — | 16 | ~1914 |
| William Donahue | Son | — | 10 | ~1920 |
| John Donahue | Son | — | 18 | ~1912 |
| Robert Donahue | Son | — | 8 | ~1922 |
| George Donahue | Son | — | 4 | ~1926 |
| Mary Donahue | Spouse | — | 42 | ~1888 |
Census Appearances
1930
Alameda, California
Head, age 45
Alameda, California · implied b. ~1885 — 10 household members
| Surname | Donahue |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 45 |
| Marital Status | Married |
| Birthplace | California |
| Age at First Marriage | 25 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Clerk |
| Industry | Post Office |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 40 |
| Radio Set | R |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1940
Alameda-County, California
Head, age 55
Alameda-County, California · implied b. ~1885
●
Primary link
· ~Confirmed · 1 source
XGBoost
| Surname | Donohue |
| Given Name | John F. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 55 |
| Marital Status | Widowed |
| Birthplace | California |
| 1935 Residence (City) | Oakland City |
| 1935 Residence (County) | Alameda |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
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 Donahue across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Donahue
Head · 1930 · age 45 · b. ~1885 · California
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1930 US Federal Census — Alameda, California
Open full size
1930 US Federal Census — Alameda, California
Page Contents
50 people indexed on this census page (ia:1930:californiacensus00reel111:0896)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Mary A | 44 | Head | — | California |
| 2 | Julia | 42 | Sister | Teacher | California |
| 3 | Alice | 40 | Sister | Teacher | California |
| 4 | Rose | 38 | Sister | Teacher | California |
| 5 | John | 36 | Brother | Clerk | California |
| 6 | James | 34 | Brother | Clerk | California |
| 7 | William | 32 | Brother | Clerk | California |
| 8 | Thelma Robison | 28 | Head | Stenographer | California |
| 9 | George Underwood | 38 | Head | Salesman | California |
| 10 | Frances Underwood | 36 | Wife | — | California |
| 11 | George Underwood | 12 | Son | — | California |
| 12 | Mary Underwood | 10 | Daughter | — | California |
| 13 | John Underwood | 8 | Son | — | California |
| 14 | John Donahue THIS PERSON | 45 | Head | Clerk | California |
| 15 | Mary Donahue | 42 | Wife | — | California |
| 16 | John Donahue | 18 | Son | — | California |
| 17 | James Donahue | 16 | Son | — | California |
| 18 | Alice Donahue | 14 | Daughter | — | California |
| 19 | Rose Donahue | 12 | Daughter | — | California |
| 20 | William Donahue | 10 | Son | — | California |
| 21 | Robert Donahue | 8 | Son | — | California |
| 22 | Helen Donahue | 6 | Daughter | — | California |
| 23 | George Donahue | 4 | Son | — | California |
| 24 | William Sullivan | 48 | Head | Clerk | California |
| 25 | Mary Sullivan | 45 | Wife | — | California |
| 26 | William Sullivan | 18 | Son | — | California |
| 27 | James Sullivan | 16 | Son | — | California |
| 28 | Alice Sullivan | 14 | Daughter | — | California |
| 29 | Rose Sullivan | 12 | Daughter | — | California |
| 30 | Robert Sullivan | 10 | Son | — | California |
| 31 | Helen Sullivan | 8 | Daughter | — | California |
| 32 | George Sullivan | 6 | Son | — | California |
| 33 | John Sullivan | 4 | Son | — | California |
| 34 | Mary Sullivan | 2 | Daughter | — | California |
| 35 | Alice Sullivan | 1 | Daughter | — | California |
| 36 | William Johnson | 45 | Head | Clerk | California |
| 37 | Mary Johnson | 42 | Wife | — | California |
| 38 | William Johnson | 18 | Son | — | California |
| 39 | James Johnson | 16 | Son | — | California |
| 40 | Alice Johnson | 14 | Daughter | — | California |
| 41 | Rose Johnson | 12 | Daughter | — | California |
| 42 | Robert Johnson | 10 | Son | — | California |
| 43 | Helen Johnson | 8 | Daughter | — | California |
| 44 | George Johnson | 6 | Son | — | California |
| 45 | John Johnson | 4 | Son | — | California |
| 46 | Mary Johnson | 2 | Daughter | — | California |
| 47 | Alice Johnson | 1 | Daughter | — | California |
| 48 | Henry Struve | 36 | Head | Laborer | Germany |
| 49 | Amanda Struve | 27 | Wife | — | Germany |
| 50 | Carl Struve | 7 | Son | — | Germany |
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)