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William Strong — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Humboldt-County, California
Our Model Tree links this William Strong across the 1930 and 1940 US Censuses in Humboldt-County, California (XGBoost, ~Confirmed) — first a son (b.~1925), then head of a 9-person household.
Age 15
b. ~1925
Male
Son
Born: California
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Humboldt-County, California |
| Surname | Strong |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Trinity |
| Additional Details | |
| Class of Worker | 0 |
| Highest Grade | Hs 1 |
| 1935 Residence | California |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
| Township / Ward | Blue Lake |
| Est. Birth Year | ~1925 |
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 William | Age | Birth yr |
|---|---|---|---|---|
| William Strong | Son | — | 15 | ~1925 |
| Richard Strong | Son | — | 12 | ~1928 |
| Charles Strong | Son | — | 18 | ~1922 |
| Louise Strong | Daughter | — | 16 | ~1924 |
| Betty Strong | Daughter | — | 3 | ~1937 |
| Molly Strong | Son | — | 1 | ~1939 |
| Ethel Strong | Spouse | — | 39 | ~1901 |
| Charles Strong | Head | — | 60 | ~1880 |
| David Strong | Son | — | 7 | ~1933 |
Census Appearances
1930
Humboldt, California
Son, age 5
Humboldt, California · implied b. ~1925 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Strong |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Oregon |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1940
Humboldt-County, California
Son, age 15
Humboldt-County, California · implied b. ~1925 — 9 household members
| Surname | Strong |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Trinity |
| Class of Worker | 0 |
| Highest Grade | Hs 1 |
| 1935 Residence | California |
| 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 William Strong across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
William Strong
Son · 1940 · age 15 · b. ~1925 · California
★ You are viewing this record
Sibling
Richard Strong
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
David Strong
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Louise Strong
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Betty Strong
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Charles Strong
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Molly Strong
Sibling · 1940 · age 1
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 — Humboldt-County, California
Open full size
1940 US Federal Census — Humboldt-County, California
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00208-00214)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | John E. Lindstrand | 67 | Head | Mechanic | Sweden |
| 42 | Clara Lindstrand | 66 | Wife | — | Sweden |
| 43 | Robert Martin Yegge | 54 | Head | Office Clerk | Iowa |
| 44 | Effie Acorn Yegge | 46 | Wife | City Clerk | California |
| 45 | Robert Alonzo Acorn | 78 | Father-in-law | — | Pennsylvania |
| 46 | Ray Piersall | 45 | Head | Truck Driver | Nebraska |
| 47 | Eunice Piersall | 36 | Wife | — | Virginia |
| 48 | Jack Piersall | 16 | Son | — | Montana |
| 49 | Robert Piersall | 15 | Son | — | Idaho |
| 50 | Charles T. Strong | 60 | Head | Miner | Indiana |
| 51 | Ethel Strong | 39 | Wife | — | Oregon |
| 52 | Charles T. Jr. Strong | 18 | Son | Laborer | Idaho |
| 53 | Louise Strong | 16 | Daughter | — | Oregon |
| 54 | William Strong THIS PERSON | 15 | Son | — | California |
| 55 | Richard Strong | 12 | Son | — | California |
| 56 | David Strong | 7 | Son | — | California |
| 57 | Betty Lee Strong | 3 | Daughter | — | California |
| 58 | Molly Strong | 1 | Son | — | California |
| 59 | Charles O'Connor | 31 | Head | Logger | California |
| 60 | Carline O'Connor | 30 | Wife | — | California |
| 61 | Gladys Irene O'Connor | 8 | Daughter | — | California |
| 62 | Helen Josephine O'Connor | 7 | Daughter | — | California |
| 63 | Louis Schmidt | 76 | Head | Taxidermist | France |
| 64 | Carlena Schmidt | 57 | Wife | — | Colorado |
| 65 | Jack Schmidt | 19 | Son | Laborer | California |
| 66 | John Britechgi | 65 | Head | Laborer | Switzerland |
| 67 | John Jr. Britechgi | 15 | Son | — | California |
| 68 | Anna Van Deventer | 60 | Head | — | California |
| 69 | Nathan Norris | 73 | Head | — | Indiana |
| 70 | Earl Klein | 41 | Head | Laborer | Illinois |
| 71 | Laura Klein | 38 | Wife | — | California |
| 72 | Dorothy Klein | 16 | Daughter | — | California |
| 73 | June Klein | 14 | Daughter | — | California |
| 74 | Harold Klein | 13 | Son | — | California |
| 75 | Bobby Jean Klein | 10 | Daughter | — | California |
| 76 | Herbert Harnden | 45 | Head | Proprietor | Montana |
| 77 | Susie Harnden | 45 | Wife | — | California |
| 78 | Paul Harnden | 12 | Son | — | California |
| 79 | Peter Harnden | 10 | Son | — | California |
| 80 | Richard Sr. Harnden | 6 | Son | — | 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)