HJ
Harvey Johnson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Alameda-County, California
Our Model Tree links this Harvey Johnson across the 1930 and 1940 US Censuses in Alameda-County, California (XGBoost, ~Confirmed) — first a son (b.~1924), then head of a 9-person household.
Age 16
b. ~1924
Male
Son
Born: Rhode Island
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Alameda-County, California |
| Surname | Johnson |
| Given Name | Harvey |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Rhode Island |
| 1935 Residence (City) | Oakland |
| 1935 Residence (County) | Alameda |
| Additional Details | |
| Highest Grade | H-1 |
| 1935 Residence | California |
| Birth State | Rhode Island |
| Birth Country | United States |
| Birthplace (normalized) | rhode island |
| Township / Ward | Oakland |
| Est. Birth Year | ~1924 |
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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Harvey | Age | Birth yr |
|---|---|---|---|---|
| Myrtle Johnson | Daughter | — | 3 | ~1937 |
| Marion Johnson | Daughter | — | 5 | ~1935 |
| Francis Johnson | Son | — | 13 | ~1927 |
| Harold Johnson | Son | — | 15 | ~1925 |
| Melvin Johnson | Son | — | 10 | ~1930 |
| Harold Johnson | Head | — | 42 | ~1898 |
| Raymond Johnson | Son | — | 7 | ~1933 |
| Harvey Johnson | Son | — | 16 | ~1924 |
| Martha Johnson | Spouse | — | 37 | ~1903 |
Census Appearances
1930
Alameda, California
Son, age 7
Alameda, California · implied b. ~1923 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Harvey C. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Rhode Island |
| Father's Birthplace | California |
| Mother's Birthplace | Rhode Island |
| Can Read/Write | Yes |
| Birth State | Rhode Island |
| Birth Country | United States |
| Birthplace (normalized) | rhode island |
1940
Alameda-County, California
Son, age 16
Alameda-County, California · implied b. ~1924 — 9 household members
| Surname | Johnson |
| Given Name | Harvey |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Rhode Island |
| 1935 Residence (City) | Oakland |
| 1935 Residence (County) | Alameda |
| Highest Grade | H-1 |
| 1935 Residence | California |
| Birth State | Rhode Island |
| Birth Country | United States |
| Birthplace (normalized) | rhode island |
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 Harvey Johnson across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Harvey Johnson
Son · 1940 · age 16 · b. ~1924 · California
★ You are viewing this record
Sibling
Harold Johnson
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Francis Johnson
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Melvin Johnson
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Raymond Johnson
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Marion Johnson
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Myrtle Johnson
Sibling · 1940 · 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
1940 US Federal Census — Alameda-County, California
Open full size
1940 US Federal Census — Alameda-County, California
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-00435-00159)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Annie Jones | 41 | Head | Waitress | Oklahoma |
| 42 | Virginia Booth | 68 | Mother | — | Missouri |
| 43 | Eleanor Madonna | 28 | Daughter | Servant | Michigan |
| 44 | Shirley Madonna | 12 | Granddaughter | — | California |
| 45 | Harold Johnson | 42 | Head | Laborer | California |
| 46 | Martha Johnson | 37 | Wife | — | Rhode Island |
| 47 | Harvey Johnson THIS PERSON | 16 | Son | — | Rhode Island |
| 48 | Harold Jr. Johnson | 15 | Son | — | Rhode Island |
| 49 | Francis Johnson | 13 | Son | — | California |
| 50 | Melvin Johnson | 10 | Son | — | California |
| 51 | Raymond Johnson | 7 | Son | — | California |
| 52 | Marion Johnson | 5 | Daughter | — | California |
| 53 | Myrtle Johnson | 3 | Daughter | — | California |
| 54 | Emanuel Bargas | 70 | Head | Blacksmith | California |
| 55 | Christina Staple | 43 | Head | — | Hawaii |
| 56 | Ralph Staple | 45 | Husband | Laborer | Colorado |
| 57 | Harry Jordan | 18 | Son | Laborer | Hawaii |
| 58 | Mae Staple | 14 | Daughter | — | Hawaii |
| 59 | Pearl Staple | 10 | Daughter | — | Hawaii |
| 60 | Josefina Reposa | 32 | Head | Laborer | California |
| 61 | Clara Reposa | 27 | Wife | — | Hawaii |
| 62 | Veronica Reposa | 4 | Daughter | — | California |
| 63 | John F. White | 44 | Head | Sewer Contractor | Portugal |
| 64 | Guy F. Nutt | 63 | Head | Electrician | Pennsylvania |
| 65 | Lena Nutt | 66 | Wife | — | Italy |
| 66 | Sydney Bernhardy | 37 | Head | Stenographer | California |
| 67 | Barbara Bernhardy | 13 | Daughter | — | California |
| 68 | David Bernhardy | 12 | Son | — | California |
| 69 | Minna Kelleng | 82 | Head | Housewife | Germany |
| 70 | Geo Frank Vance | 55 | Lodger | Cook | Missouri |
| 71 | St Stuart | None | — | — | — |
| 73 | Clement Rodriques | 45 | Head | Collector | Hawaii |
| 74 | Rose Rodriques | 43 | Wife | — | Hawaii |
| 75 | Ruth Rodriques | 20 | Daughter | — | California |
| 76 | Clement Jr. Rodriques | 19 | Son | — | California |
| 77 | Warren Jordon | 13 | Boarder | — | California |
| 78 | James Fregollo | 60 | Head | Laborer | Italy |
| 79 | Marie Fregollo | 45 | Wife | — | Italy |
| 80 | Norma Fregollo | 17 | Daughter | — | California |
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)