WC
William Copeland — 1940 US Census Record
Linked across censuses1940 United States Federal Census · San-Diego-County, California
Our Model Tree links this William Copeland across the 1930 and 1940 US Censuses in San-Diego-County, California (XGBoost, ~Confirmed) — first a son (b.~1918), then head of a 5-person household.
Age 22
b. ~1918
Male
Son
Born: California
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | San-Diego-County, California |
| Surname | Copeland |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | San Diego City |
| 1935 Residence (County) | San Diego |
| Additional Details | |
| Occupation | wing assembly |
| Industry | airplane factory |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 600 |
| Highest Grade | H-4 |
| 1935 Residence | Same House |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
| Occupation | Wing Assembly |
| Township / Ward | San Diego City |
| Est. Birth Year | ~1918 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| Le Copeland | Son | — | 20 | ~1920 |
| Carl Myers | Son | — | 31 | ~1909 |
| Nellie Copeland | Spouse | — | 52 | ~1888 |
| Le Copeland | Head | — | 51 | ~1889 |
| William Copeland | Son | — | 22 | ~1918 |
Census Appearances
1930
San Diego, …
Son, age 12
San Diego, California · implied b. ~1918 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Copeland |
| Given Name | William R. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | California |
| Mother's Birthplace | Kansas |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1940
San-Diego-County, California
Son, age 22
San-Diego-County, California · implied b. ~1918 — 5 household members
| Surname | Copeland |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | San Diego City |
| 1935 Residence (County) | San Diego |
| Occupation | wing assembly |
| Industry | airplane factory |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 600 |
| Highest Grade | H-4 |
| 1935 Residence | Same House |
| 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 Copeland across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
William Copeland
Son · 1940 · age 22 · b. ~1918 · California
★ You are viewing this record
Sibling
Carl Myers
Sibling · 1940 · age 31
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Le Copeland
Sibling · 1940 · age 20
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
38 people indexed on this census page (nara:1940:m-t0627-00453-00329)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | James L Clendenning | 48 | Head | — | Kansas |
| 42 | Amelia Clendenning | 45 | Wife | — | Rhode Island |
| 43 | Laverne Mayhew | 40 | Head | Wash Man | Illinois |
| 44 | Belle Mayhew | 35 | Wife | Sorter And Marker | Oklahoma |
| 45 | Elizabeth Hemenway | 73 | Aunt | — | Illinois |
| 46 | Le Ray Copeland | 51 | Head | Night Fireman | California |
| 47 | Nellie Copeland | 52 | Wife | — | Kansas |
| 48 | William Copeland THIS PERSON | 22 | Son | Wing Assembly | California |
| 49 | Le Ray Copeland | 20 | Son | Camp Leader | California |
| 50 | Carl Myers | 31 | Son | Maintenance Man | Kansas |
| 52 | Herbert R Ham | 37 | Head | Farmer | Texas |
| 53 | Lillie Ham | 29 | Wife | — | Texas |
| 54 | Bennie Lee Ham | 9 | Daughter | — | Texas |
| 55 | Millie Lee Ham | 8 | Daughter | — | Texas |
| 56 | Donald Ham | 4 | Son | — | California |
| 57 | Mary Alice Ham | 1 | Daughter | — | California |
| 58 | George Richards | 33 | Head | Signalman | Texas |
| 59 | Verna Richards | 28 | Wife | — | Washington |
| 60 | Billie E Richards | 9 | Son | — | Washington |
| 61 | Christine Richards | 8 | Daughter | — | California |
| 62 | Mary Washkevich | 27 | Lodger | — | Nebraska |
| 63 | Maralin Washkevich | 8 | Lodger's daughter | — | California |
| 64 | Peter Washkevich | 25 | Lodger's husband | Metalsmith | Connecticut |
| 66 | Rudolph Kramer | 28 | Head | Aviation Machinist | Pennsylvania |
| 67 | Helen L Kramer | 25 | Wife | — | Texas |
| 68 | Helen L Kramer | 2 | Daughter | — | California |
| 69 | Thomas Edmondson | 34 | Head | Bm-1St Class | Massachusetts |
| 70 | Lydia Edmondson | 40 | Wife | — | Kansas |
| 71 | Germain Weaver | 23 | Daughter | — | Kansas |
| 72 | James Weaver | 6 | Son | — | California |
| 73 | Dewey Puckett | 27 | Head | Radioman | Mississippi |
| 74 | Harriet Puckett | 22 | Wife | — | California |
| 75 | Ann Puckett | 3 | Daughter | — | California |
| 76 | Dorothy Puckett | 1 | Daughter | — | California |
| 77 | Anton Francia | 42 | Head | Coxswain | Massachusetts |
| 78 | Lillian Francia | 49 | Wife | — | Illinois |
| 79 | Seymore Eudy | 27 | Head | Water Tender | No. Carolina |
| 80 | Leona Eudy | 28 | Wife | Waitress | Indiana |
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)