HC
Henry Clark — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Alameda-County, California
Our Model Tree links this Henry Clark across the 1920, 1930 and 1940 US Censuses in Alameda-County, California (XGBoost, ~Confirmed) — first a head (b.~1873), then head of a 3-person household.
Age 67
b. ~1873
Male
Head
Born: England
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Alameda-County, California |
| Surname | Clark |
| Given Name | Henry J. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 67 |
| Marital Status | Married |
| Birthplace | England |
| 1935 Residence (City) | Oakland |
| 1935 Residence (County) | Alameda |
| Naturalization Status | Naturalized |
| Additional Details | |
| Class of Worker | 0 |
| Highest Grade | H 2 |
| 1935 Residence | Same place |
| Birth Country | England |
| Birthplace (normalized) | england |
| Township / Ward | Oakland |
| Est. Birth Year | ~1873 |
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 1940 census.
| Name | Relation to head | Relative to Henry | Age | Birth yr |
|---|---|---|---|---|
| Leola Halson | Daughter | — | 43 | ~1897 |
| Pearl Anderson | Daughter | — | 39 | ~1901 |
| Henry Clark | Head | — | 67 | ~1873 |
Census Appearances
1920
Alameda, California
Head, age 48
Alameda, California · implied b. ~1872 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Clark |
| Given Name | Henry J. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 48 |
| Marital Status | Married |
| Birthplace | England |
| Year of Immigration | 1887 |
| Naturalization Status | Naturalized |
| Father's Birthplace | England |
| Mother's Birthplace | England |
| Occupation | Signal repairman |
| Industry | Railroad co |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Home Owned/Rented | O |
| Home Free/Mortgaged | F |
| Birth Country | England |
| Year of Naturalization | 1900 |
| Birthplace (normalized) | england |
Head, age 58
Alameda, California · implied b. ~1872 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Clark |
| Given Name | Harry |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 58 |
| Marital Status | Married |
| Birthplace | England |
| Naturalization Status | Naturalized |
| Year of Immigration | 1882 |
| Age at First Marriage | 24 |
| Father's Birthplace | England |
| Mother's Birthplace | England |
| Occupation | Pipe Fitter |
| Industry | Gas Plant |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Home Owned/Rented | O |
| Home Value / Rent | 3500 |
| Radio Set | R |
| Veteran | No |
| Birth Country | England |
| Birthplace (normalized) | england |
1940
Alameda-County, California
Head, age 67
Alameda-County, California · implied b. ~1873 — 3 household members
| Surname | Clark |
| Given Name | Henry J. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 67 |
| Marital Status | Married |
| Birthplace | England |
| 1935 Residence (City) | Oakland |
| 1935 Residence (County) | Alameda |
| Naturalization Status | Naturalized |
| Class of Worker | 0 |
| Highest Grade | H 2 |
| 1935 Residence | Same place |
| Birth Country | England |
| Birthplace (normalized) | england |
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 Henry Clark across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Henry Clark
Head · 1940 · age 67 · b. ~1873 · California
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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-t0627-00436-00544)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Louis Grant Polsley | 61 | Head | Attendant | California |
| 42 | Anna V. Polsley | 60 | Wife | — | Kansas |
| 43 | Johnsen Shirley Polsley | 6 | Granddaughter | — | California |
| 44 | Arthur Tomes | 36 | Head | Cook | China |
| 45 | Margaret Tomes | 23 | Wife | Cashier | California |
| 46 | Walter Collenburg | 40 | Head | Bookkeeper | California |
| 47 | Ernest W. Jacobsen | 26 | Head | Salesman | Minnesota |
| 48 | Katherine Jacobsen | 26 | Wife | — | California |
| 49 | Ernest Jacobsen | 3 | Son | — | California |
| 50 | Janet Jacobsen | 2 | Daughter | — | California |
| 51 | Gerhard Schudel | 29 | Lodger | Teller | California |
| 52 | John Strand | 50 | Head | — | Sweden |
| 53 | Henrietta Strand | 56 | Wife | Dressmaking | Germany |
| 54 | Peter Preite | 58 | Head | Assistant Foreman | Italy |
| 55 | Rose Preite | 48 | Wife | — | Italy |
| 56 | Charles Preite | 28 | Son | Warehouse Clerk | Montana |
| 57 | Helen Preite | 26 | Daughter | Soda Packer | Montana |
| 58 | Albert Preite | 19 | Son | New Worker | California |
| 59 | Stanley Preite | 17 | Son | — | California |
| 60 | Eva Preite | 14 | Daughter | — | California |
| 61 | Henry J. Clark THIS PERSON | 67 | Head | — | England |
| 62 | Leola Halson | 43 | Daughter | — | California |
| 63 | Pearl Anderson | 39 | Daughter | Telephone Operator | California |
| 64 | Paul Breitkopf | 53 | Head | Brick Layer | Germany |
| 65 | Gretchen Breitkopf | 44 | Wife | — | Germany |
| 66 | Carl Breitkopf | 8 | Son | — | California |
| 67 | Gerda Breitkopf | 5 | Daughter | — | California |
| 68 | Minetta Smith | 67 | Head | — | Canada |
| 69 | Floy Smith | 60 | Sister | — | Canada |
| 70 | Elizabeth Mc Donald | 54 | Head | Housework | Holland |
| 71 | Fred Mc Donald | 19 | Son | Blacksmith | California |
| 72 | Anna Mc Donald | 18 | Daughter | Maid | California |
| 73 | Benny Erickson | 26 | Head | Laborer | Wyoming |
| 74 | Dorothy Erickson | 20 | Wife | — | California |
| 75 | Dorothy A. Erickson | 1 | Daughter | 0 | California |
| 76 | Annie Bewall | 67 | Head | — | Illinois |
| 77 | Mary Geyer | 34 | Daughter | New Worker | Arizona |
| 78 | Florence Geyer | 9 | Daughter | — | Hawaii |
| 79 | Richard Geyer | 6 | Son | — | Kansas |
| 80 | Abe Barnett | 35 | Head | Tailor | New York |
Related Census Records
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)