MS
Mary Shea — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Alameda-County, California
Our Model Tree links this Mary Shea across the 1930 and 1940 US Censuses in Alameda-County, California (XGBoost, ~Confirmed) — first a daughter (b.~1910), then head of a 13-person household.
Age 30
b. ~1910
Female
Daughter
Born: California
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Alameda-County, California |
| Surname | Shea |
| Given Name | Mary M. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 30 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | Berkeley City |
| 1935 Residence (County) | Alameda |
| Additional Details | |
| Occupation | teacher |
| Industry | public school |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1500 |
| Highest Grade | C 2 |
| 1935 Residence | Same place |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
| Occupation | Teacher |
| Township / Ward | Berkeley City |
| Est. Birth Year | ~1910 |
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.
13 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Shea | Daughter | — | 30 | ~1910 |
| Hiroko Yano | Daughter | — | 26 | ~1914 |
| Yuriko Yano | Daughter | — | 19 | ~1921 |
| Mitsuko Yano | Daughter | — | 11 | ~1929 |
| Kathleen Moreau | Daughter | — | 23 | ~1917 |
| C Moreau | Daughter | — | 26 | ~1914 |
| Elizabeth Shea | Daughter | — | 20 | ~1920 |
| Alberta Tuechauer | Daughter | — | 22 | ~1918 |
| Merritt Wilson | Head | — | 30 | ~1910 |
| Kate Smith | Other | — | 49 | ~1891 |
| William Wilson | Son | — | 1 | ~1939 |
| Jarvis Tuechauer | Son | — | 25 | ~1915 |
| Lois Wilson | Spouse | — | 26 | ~1914 |
Census Appearances
1930
Alameda, California
Daughter, age 20
Alameda, California · implied b. ~1910 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Shaw |
| Given Name | Marjorie E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 20 |
| Marital Status | Married |
| Birthplace | California |
| Age at First Marriage | 21 |
| Father's Birthplace | Rhode Island |
| Mother's Birthplace | Wisconsin |
| Can Read/Write | Yes |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1940
Alameda-County, California
Daughter, age 30
Alameda-County, California · implied b. ~1910 — 13 household members
| Surname | Shea |
| Given Name | Mary M. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 30 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | Berkeley City |
| 1935 Residence (County) | Alameda |
| Occupation | teacher |
| Industry | public school |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1500 |
| 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 Mary Shea across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Shea
Daughter · 1940 · age 30 · b. ~1910 · California
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Sibling
Mitsuko Yano
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
C Moreau
Sibling · 1940 · age 26
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Yuriko Yano
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Alberta Tuechauer
Sibling · 1940 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Wilson
Sibling · 1940 · age 1
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Jarvis Tuechauer
Sibling · 1940 · age 25
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Hiroko Yano
Sibling · 1940 · age 26
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Elizabeth Shea
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Kathleen Moreau
Sibling · 1940 · age 23
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-t0627-00187-00372)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Joseph L. Frantzen | 37 | Head | Plasterer | New Jersey |
| 2 | June Frantzen | 28 | Wife | — | Texas |
| 3 | Joseph A. Frantzen | 15 | Son | — | California |
| 4 | Lloyd Ricketts | 16 | Br. in law | — | California |
| 5 | Milton F. Lude | 43 | Head | Mechanic | Germany |
| 6 | Florence M. Mcgraw | 53 | Housekeeper | Housekeeper | Illinois |
| 7 | Mary C. Kibble | 77 | Housekeeper | — | Canada Eng |
| 8 | Raymond Lude | 12 | Son | — | Illinois |
| 9 | Larry Mcgraw | 5 | Nephew | — | Illinois |
| 10 | George Bannister | 44 | Head | Tool Maker | Australia |
| 11 | Lena F. Bannister | 42 | Wife | — | England |
| 12 | George M. Bannister | 15 | Son | — | Michigan |
| 13 | Donald M. Bannister | 10 | Son | — | Michigan |
| 14 | Herman H. Rowland | 39 | Head | Carpenter | California |
| 15 | Helen M. Rowland | 40 | Wife | Woodwork | California |
| 16 | Helen A. Rowland | 15 | Daughter | — | California |
| 17 | Jon Rowland | 13 | Son | — | California |
| 18 | Sarah Rowland | 6 | Daughter | — | California |
| 19 | Mary Hirata | 25 | Daughter | Barber | California |
| 20 | Jane Hirata | 23 | Daughter | Barber | California |
| 21 | Roberta B. Craig | 7 | Daughter | — | California |
| 22 | Merritt D. Wilson | 30 | Head | Electrician | Oregon |
| 23 | Lois A. Wilson | 26 | Wife | — | California |
| 24 | William M. Wilson | 1 | Son | — | California |
| 25 | Kate Smith | 49 | Sister | Stenographer | California |
| 26 | Hiroko H. Yano | 26 | Daughter | Clerk | California |
| 27 | Yuriko L. Yano | 19 | Daughter | Clerk | California |
| 28 | Mitsuko R. Yano | 11 | Daughter | — | California |
| 29 | Jarvis H. Tuechauer | 25 | Son | Radio Engineer | Texas |
| 30 | Alberta Tuechauer | 22 | Daughter | — | Texas |
| 31 | Mary M. Shea THIS PERSON | 30 | Daughter | Teacher | California |
| 32 | Elizabeth A. Shea | 20 | Daughter | — | California |
| 33 | C. Moreau | 26 | Daughter | Nurse | California |
| 34 | Kathleen V. Moreau | 23 | Daughter | — | California |
| 35 | John D. Hopkins | 28 | Head | Mechanic | California |
| 36 | Elizabeth Speer | 57 | Head | — | Kansas |
| 37 | Charles A. Speer | 35 | Son | Mailman | Kansas |
| 38 | William H. Speer | 31 | Son | Machinist | Kansas |
| 39 | Roselle L. Speer | 23 | Daughter | Comptometrist | Kansas |
| 40 | Francis X. Speer | 21 | Son | Clerk | 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)