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William Sharp — 1940 US Census Record
Model Tree available1940 United States Federal Census · San-Diego-County, California
Our Model Tree links this William Sharp across the 1920, 1930 and 1940 US Censuses in San-Diego-County, California (XGBoost, ~Confirmed), with identified parents William & William — first a son (b.~1917), then head of a 4-person household.
Age 23
b. ~1917
Male
Son
Born: California
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | San-Diego-County, California |
| Surname | Sharp |
| Given Name | William A. Jr. |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | National City |
| 1935 Residence (County) | San Diego |
| Additional Details | |
| Occupation | electrical worker |
| Industry | airplane factory |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1400 |
| Highest Grade | C-2 |
| 1935 Residence | Same place |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
| Occupation | Electrical Worker |
| Township / Ward | National City |
| Est. Birth Year | ~1917 |
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 William | Age | Birth yr |
|---|---|---|---|---|
| Jean Sharp | Daughter | — | 21 | ~1919 |
| William Sharp | Head | — | 55 | ~1885 |
| William Sharp | Son | — | 23 | ~1917 |
| Della Sharp | Spouse | — | 51 | ~1889 |
Census Appearances
1920
San Diego, …
Son, age 3
San Diego, California · implied b. ~1917 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Sharp |
| Given Name | William A. Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Nebraska |
| Mother's Birthplace | California |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1930
San Diego, …
Son, age 13
San Diego, California · implied b. ~1917 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Sharp |
| Given Name | William A. Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Nebraska |
| Mother's Birthplace | California |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1940
San-Diego-County, California
Son, age 23
San-Diego-County, California · implied b. ~1917 — 4 household members
| Surname | Sharp |
| Given Name | William A. Jr. |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | National City |
| 1935 Residence (County) | San Diego |
| Occupation | electrical worker |
| Industry | airplane factory |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1400 |
| Highest Grade | C-2 |
| 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 William Sharp across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father William Sharp (~0.92 confidence) and father William Sharp (~0.92 confidence) and mother Della Sharp (~0.92 confidence) and father William Sharp (~0.92 confidence) and mother Della Sharp (~0.92 confidence) and mother Della Sharp (~0.92 confidence). The pedigree spans 1 generation with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
William Sharp
b. ~1882
Source father
● Household
· direct · ~0.92
Father
William Sharp
b. ~1885
Source father
● Household
· direct · ~0.92
Mother
Della Sharp
b. ~1888
Source mother
● Household
· direct · ~0.92
Father
William Sharp
b. ~1888
Source father
● Household
· direct · ~0.92
Mother
Della Sharp
b. ~1889
Source mother
● Household
· direct · ~0.92
Mother
Della Sharp
b. ~1889
Source mother
● Household
· direct · ~0.92
This person
Anchor record
William Sharp
Son · 1940 · age 23 · b. ~1917 · California
★ You are viewing this record
Sibling
Jean Sharp
Sibling · 1940 · age 21
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 — San-Diego-County, California
Open full size
1940 US Federal Census — San-Diego-County, California
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00297-00128)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Howard D. Speer | 22 | head | Truck Driver | Kansas |
| 42 | Arlyne F. Speer | 20 | wife | None | Kansas |
| 43 | William A. Sharp | 55 | head | Proprietor | Colorado |
| 44 | Della B. Sharp | 51 | wife | Proprietress | California |
| 45 | William A. Jr. Sharp THIS PERSON | 23 | son | Electrical Worker | California |
| 46 | Jean M. Sharp | 21 | daughter | Stenographer | California |
| 47 | Frank O. Heikkila | 41 | head | Trouble Shooter | Minnesota |
| 48 | Madine Heikkila | 36 | wife | Music Teacher | California |
| 49 | Ellery H. Heikkila | 18 | son | Plays Piano | California |
| 50 | Jack Loftus | 31 | boarder | Meter-Man | Michigan |
| 51 | Perry E. Oakley | 52 | head | Clerk - Shipping Dept. | Tennessee |
| 52 | Nola D. Oakley | 45 | wife | None | Missouri |
| 53 | James B. Mills | 69 | head | Accountant | Michigan |
| 54 | Lena Mills | 70 | wife | None | Iowa |
| 55 | Lauren Jennings | 67 | head | Gardening & Lawn Work | Indiana |
| 56 | Lucy D. Jennings | 54 | wife | Housework | Indiana |
| 57 | Wanda M. Jennings | 16 | daughter | None | Indiana |
| 58 | Nemo S. Jolls | 59 | head | Clerk-Carrier | Ohio |
| 59 | Florence D. Jolls | 57 | wife | None | California |
| 60 | Roger T. Lindholm | 55 | head | Contractor | Minnesota |
| 61 | Emma Lindholm | 46 | wife | Cook | England |
| 62 | Roger R. Lindholm | 17 | son | None | Canada |
| 63 | Gwendolyn M. Lindholm | 10 | daughter | None | California |
| 64 | Gordon C. Lindholm | 9 | son | None | California |
| 65 | John D. Haaley | 26 | head | Proprietor | Texas |
| 66 | Olive A. Haaley | 25 | wife | None | Arizona |
| 67 | William Boyd Haaley | 1 | son | None | California |
| 68 | Sydney Riley | 33 | head | Teller | England |
| 69 | Margaret E. Riley | 25 | wife | None | California |
| 70 | Allen J. Starr | 42 | head | Proprietor | Nebraska |
| 71 | Ruth Starr | 34 | wife | None | No. Carolina |
| 72 | Richard T. Clark | 14 | step-son | None | Washington |
| 73 | Aline R. Starr | 7 | daughter | None | California |
| 74 | James S. Starr | 3 | son | None | California |
| 75 | Albin E. Jackson | 28 | head | Metal Smith | Colorado |
| 76 | Edith A. Jackson | 34 | wife | Waitress | Illinois |
| 77 | Charles H. Mulligan | 14 | son | None | California |
| 78 | Kilmer G. Long | 47 | head | Surveyor | Ohio |
| 79 | Edgar A. Long | 32 | brother | None | Maryland |
| 80 | Minnie Richards | 66 | head | None | New York |
Pedigree Summary
William + 1 sibling
Gen 1 · 6 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)