CH
Charles Harper — 1940 US Census Record
Model Tree available1940 United States Federal Census · Alameda-County, California
Our Model Tree links this Charles Harper across the 1910, 1920, 1930 and 1940 US Censuses in Alameda-County, California (XGBoost, ~Confirmed), with identified parents Annie & Annie — first a head (b.~1897), then head of a 4-person household.
Age 43
b. ~1897
Male
Head
Born: Nevada
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Alameda-County, California |
| Surname | Harper |
| Given Name | Charles L |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 43 |
| Marital Status | Married |
| Birthplace | Nevada |
| 1935 Residence (City) | Oakland |
| 1935 Residence (County) | Alameda |
| Additional Details | |
| Occupation | Salesman |
| Industry | Oil Co |
| Class of Worker | PW |
| Hours Worked | 45 |
| Income (1939) | 1500 |
| Highest Grade | No 8 |
| 1935 Residence | Same House |
| Birth State | Nevada |
| Birth Country | United States |
| Birthplace (normalized) | nevada |
| Occupation | Salesman |
| Township / Ward | Oakland |
| Est. Birth Year | ~1897 |
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 Charles | Age | Birth yr |
|---|---|---|---|---|
| Dorothy Harper | Spouse | — | 40 | ~1900 |
| John Harper | Son | — | 5 | ~1935 |
| Patricia Harper | Daughter | — | 7 | ~1933 |
| Charles Harper | Head | — | 43 | ~1897 |
Census Appearances
1910
Alameda, California
Son, age 13
Alameda, California · implied b. ~1897 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Harper |
| Given Name | Charles |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Nevada |
| Father's Birthplace | England |
| Mother's Birthplace | England |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | English |
| Birth State | Nevada |
| Birth Country | United States |
| Birthplace (normalized) | nevada |
1920
Alameda, California
Son, age 23
Alameda, California · implied b. ~1897 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Harper |
| Given Name | Charles L. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Nevada |
| Father's Birthplace | England |
| Mother's Birthplace | England |
| Occupation | Clerk |
| Industry | Associated Oil |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Nevada |
| Birth Country | United States |
| Birthplace (normalized) | nevada |
1930
Alameda, California
Head, age 33
Alameda, California · implied b. ~1897 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Harper |
| Given Name | Charles L |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 33 |
| Marital Status | Married |
| Birthplace | Nevada |
| Age at First Marriage | 30 |
| Father's Birthplace | England |
| Mother's Birthplace | England |
| Occupation | Salesman |
| Industry | Oil Company |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 6250 |
| Radio Set | R |
| Veteran | Yes |
| Birth State | Nevada |
| Birth Country | United States |
| Birthplace (normalized) | nevada |
1940
Alameda-County, California
Head, age 43
Alameda-County, California · implied b. ~1897 — 4 household members
| Surname | Harper |
| Given Name | Charles L |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 43 |
| Marital Status | Married |
| Birthplace | Nevada |
| 1935 Residence (City) | Oakland |
| 1935 Residence (County) | Alameda |
| Occupation | Salesman |
| Industry | Oil Co |
| Class of Worker | PW |
| Hours Worked | 45 |
| Income (1939) | 1500 |
| Highest Grade | No 8 |
| 1935 Residence | Same House |
| Birth State | Nevada |
| Birth Country | United States |
| Birthplace (normalized) | nevada |
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 Charles Harper across 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Annie Harper (~0.92 confidence) and mother Annie Harper (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Annie Harper
b. ~1867
Source mother
● Household
· direct · ~0.92
Mother
Annie Harper
b. ~1866
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Charles Harper
Head · 1940 · age 43 · b. ~1897 · 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-t0627-00438-00639)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Robert E Fahn | 6 | Son | — | California |
| 42 | Virginia Sutherland | 26 | Sister | Housekeeper | California |
| 43 | Paul M Sutherland | 2 | Nephew | — | California |
| 44 | Harry P Fungland | 29 | Head | General Office Work | Oklahoma |
| 45 | Mae D Fungland | 52 | Mother | — | Missouri |
| 46 | Extra Line Fungland | None | — | — | — |
| 47 | William J Weymouth | 52 | Head | Janitor | Massachusetts |
| 48 | Sarah D Weymouth | 48 | Wife | — | Massachusetts |
| 49 | Myrta Weymouth | 21 | Daughter | Teacher | California |
| 50 | Helen Weymouth | 17 | Daughter | — | California |
| 51 | Mel W Parker | 52 | Head | Librarian | California |
| 52 | Edna C D Parker | 41 | Wife | Plumber | California |
| 53 | Beverly Parker | 13 | Daughter | — | California |
| 54 | Joan Parker | 9 | Daughter | — | California |
| 55 | Henry G Ellsworth | 42 | Head | Truck Driver | Oregon |
| 56 | Rose M Ellsworth | 39 | Wife | — | California |
| 57 | Willard R Martin | 40 | Head | Salesman | California |
| 58 | Mabel D Martin | 40 | Wife | — | California |
| 59 | Kenneth Martin | 3 | Son | — | California |
| 60 | Arthur A Flint | 45 | Head | Salesman | Iowa |
| 61 | Lillian S D Flint | 50 | Wife | Office Engineer | Illinois |
| 62 | Earl Flint | 22 | Son | — | Nebraska |
| 63 | Harold K Billrey | 41 | Head | Auditor | Tennessee |
| 64 | Miriam D Billrey | 35 | Wife | Salesman | Colorado |
| 65 | Robert A Billrey | 7 | Son | — | California |
| 66 | Jas Wm C D Fuller | 43 | Head | Lineman | Colorado |
| 67 | Lula A Fuller | 42 | Wife | Beauty Operator | Colorado |
| 68 | John M Gilbertson | 33 | Head | Adjuster | California |
| 69 | Velma D Gilbertson | 31 | Wife | — | California |
| 70 | James M Gilbertson | 2 | Son | — | California |
| 71 | Robert S Hensinger | 34 | Head | Switchman In Office | Ohio |
| 72 | Lydia J Hensinger | 32 | Wife | — | California |
| 73 | Carol J Hensinger | 5 | Daughter | — | California |
| 74 | Sharon M Hensinger | 5 | Daughter | — | California |
| 75 | Mary D King | 54 | Head | — | Oregon |
| 76 | Heal Ends Block 4 Begins Block 5 King | None | — | — | — |
| 77 | Charles L Harper THIS PERSON | 43 | Head | Salesman | Nevada |
| 78 | Dorothy J Harper | 40 | Wife | — | California |
| 79 | Patricia J Harper | 7 | Daughter | — | California |
| 80 | John R Harper | 5 | Son | — | California |
Pedigree Summary
Charles
Gen 1 · 2 parents
~0.92
Max depth 4 (1900–1950 window)
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)