WT
William Tracy — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Alameda-County, California
Our Model Tree links this William Tracy across the 1930 and 1940 US Censuses in Alameda-County, California (XGBoost, ~Confirmed) — first a son (b.~1925), then head of a 6-person household.
Age 15
b. ~1925
Male
Son
Born: Washington
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Alameda-County, California |
| Surname | Tracy |
| Given Name | William G |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Washington |
| 1935 Residence (City) | San Leandro |
| 1935 Residence (County) | Alameda |
| Additional Details | |
| Occupation | Typist |
| Industry | Public School |
| Class of Worker | GW |
| Hours Worked | 10 |
| Income (1939) | 0 |
| Highest Grade | H 1 |
| 1935 Residence | California |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
| Occupation | Typist |
| Township / Ward | Oakland |
| 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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| Gladstone Tracy | Head | — | 48 | ~1892 |
| Jessie Tracy | Daughter | — | 19 | ~1921 |
| William Tracy | Son | — | 15 | ~1925 |
| Jessie Tracy | Spouse | — | 47 | ~1893 |
| Helen Tracy | Daughter | — | 20 | ~1920 |
| Dan Tracy | Son | — | 7 | ~1933 |
Census Appearances
1930
Alameda, California
Son, age 5
Alameda, California · implied b. ~1925 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Tracy |
| Given Name | William G |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Washington |
| Father's Birthplace | Michigan |
| Mother's Birthplace | England |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
1940
Alameda-County, California
Son, age 15
Alameda-County, California · implied b. ~1925 — 6 household members
| Surname | Tracy |
| Given Name | William G |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Washington |
| 1935 Residence (City) | San Leandro |
| 1935 Residence (County) | Alameda |
| Occupation | Typist |
| Industry | Public School |
| Class of Worker | GW |
| Hours Worked | 10 |
| Income (1939) | 0 |
| Highest Grade | H 1 |
| 1935 Residence | California |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
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 Tracy across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
William Tracy
Son · 1940 · age 15 · b. ~1925 · California
★ You are viewing this record
Sibling
Dan Tracy
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Helen Tracy
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Jessie Tracy
Sibling · 1940 · age 19
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 — 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-t0627-00441-00502)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Charlotte E Moon | 53 | Wife | Servant | Ohio |
| 42 | Ollie A Therien | 55 | Head | New Worker | Illinois |
| 43 | Thelma C Smith | 38 | Head | — | Missouri |
| 44 | Mary S Miller | 65 | mother | — | Ohio |
| 45 | Marie P Thomas | 68 | Head | — | Wisconsin |
| 46 | Abbie A Flint | 80 | Head | — | California |
| 47 | Frank M Cone | 40 | Son-in-law | Manager | Massachusetts |
| 48 | Edna Cone | 39 | Daughter | Dispatcher | California |
| 49 | Claire Haecke | 64 | Head | — | California |
| 50 | Marie J Austin | 47 | Head | Bookkeeper | Sweden |
| 51 | James F Austin | 19 | Son | Attendant | Iowa |
| 52 | John Austin | 18 | Son | — | Iowa |
| 53 | William Neilson | 54 | Head | Civil Engineer | Massachusetts |
| 54 | Jeanette S Neilson | 53 | Wife | — | Massachusetts |
| 55 | Alice S Neilson | 21 | Daughter | — | California |
| 56 | Gladstone W Tracy | 48 | Head | Bookkeeper | Michigan |
| 57 | Jessie Tracy | 47 | Wife | — | England |
| 58 | Helen M Tracy | 20 | Daughter | — | Washington |
| 59 | Jessie A Tracy | 19 | Daughter | — | Washington |
| 60 | William G Tracy THIS PERSON | 15 | Son | Typist | Washington |
| 61 | Dan F Tracy | 7 | Son | — | California |
| 62 | George Mc Laren | 39 | Head | Distribution Superintendent | Illinois |
| 63 | Kathryn Mc Laren | 38 | Wife | — | California |
| 64 | Douglas J Kilbourn | 35 | Brother-in-law | Statistical Clerk | California |
| 65 | Patricia E Kilbourn | 21 | Sister | — | California |
| 66 | Alphonse Maree | 55 | Head | — | California |
| 67 | Frances P Maree | 55 | Wife | — | California |
| 68 | Marleton J Miller | 43 | Head | Collector | Indiana |
| 69 | Florence M Miller | 41 | Wife | — | California |
| 70 | William P Bastian | 47 | Head | Partner | California |
| 71 | Dorothy J Bastian | 21 | Daughter | — | California |
| 72 | Robert D Johnston | 66 | Head | Salesman | Wisconsin |
| 73 | Mary Johnston | 56 | Wife | — | Colorado |
| 74 | James W Johnston | 21 | Son | Building Contractor | Utah |
| 75 | G. Ross Horrocks | 43 | Head | Electric Engineer | Canada English |
| 76 | Jessie Horrocks | 45 | Wife | — | Scotland |
| 77 | Harry R Horrocks | 21 | Son | Winder | Scotland |
| 78 | Samuel M Horrocks | 19 | Son | — | Scotland |
| 79 | James A Horrocks | 15 | Son | — | New Zealand |
| 80 | Douglas N Horrocks | 14 | Son | — | New Zealand |
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)