MC
Mary Crane — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Alameda-County, California
Our Model Tree links this Mary Crane across the 1930 and 1940 US Censuses in Alameda-County, California (XGBoost, ~Confirmed) — first a daughter (b.~1915), then head of a 6-person household.
Age 25
b. ~1915
Female
Daughter
Born: China
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Alameda-County, California |
| Surname | Crane |
| Given Name | Mary R. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | China |
| 1935 Residence (City) | Berkeley |
| 1935 Residence (County) | Alameda |
| Naturalization Status | Am Cit |
| Additional Details | |
| Class of Worker | 0 |
| Highest Grade | C 3 |
| 1935 Residence | Same place |
| Birth Country | China |
| Birthplace (normalized) | china |
| Township / Ward | Berkeley |
| Est. Birth Year | ~1915 |
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 Mary | Age | Birth yr |
|---|---|---|---|---|
| Robert Crane | Son | — | 22 | ~1918 |
| Dorothy Crane | Daughter | — | 19 | ~1921 |
| Mary Crane | Daughter | — | 25 | ~1915 |
| Barbara Crane | Daughter | — | 21 | ~1919 |
| Jessie Crane | Spouse | — | 58 | ~1882 |
| Charles Crane | Head | — | 58 | ~1882 |
Census Appearances
1930
Alameda, California
Daughter, age 15
Alameda, California · implied b. ~1915 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Crane |
| Given Name | Mary L |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | China |
| Naturalization Status | Naturalized |
| Year of Immigration | 1923 |
| Father's Birthplace | California |
| Mother's Birthplace | Missouri |
| Occupation | Student |
| Can Read/Write | Yes |
| Birth Country | China |
| Birthplace (normalized) | china |
1940
Alameda-County, California
Daughter, age 25
Alameda-County, California · implied b. ~1915 — 6 household members
| Surname | Crane |
| Given Name | Mary R. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | China |
| 1935 Residence (City) | Berkeley |
| 1935 Residence (County) | Alameda |
| Naturalization Status | Am Cit |
| Class of Worker | 0 |
| Highest Grade | C 3 |
| 1935 Residence | Same place |
| Birth Country | China |
| Birthplace (normalized) | china |
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 Crane across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Crane
Daughter · 1940 · age 25 · b. ~1915 · California
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Sibling
Barbara Crane
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Crane
Sibling · 1940 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dorothy Crane
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
39 people indexed on this census page (nara:1940:m-t0627-00188-00594)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Charles E. Crane | 58 | Head | Teacher | California |
| 2 | Jessie M. Crane | 58 | Wife | — | Missouri |
| 3 | Mary R. Crane THIS PERSON | 25 | Daughter | — | China |
| 4 | Robert E. Crane | 22 | Son | Sheet Metal Worker | China |
| 5 | Barbara M. Crane | 21 | Daughter | — | China |
| 6 | Dorothy M. Crane | 19 | Daughter | Telephone Opr | China |
| 7 | Harry D. Kellogg | 54 | Head | Delivery Supt | Kansas |
| 8 | Anne H. Kellogg | 62 | Wife | — | California |
| 9 | Charles A. Frey | 27 | Head | Advertising | Illinois |
| 10 | Doris Frey | 22 | Wife | Bookkeeper | North Dakota |
| 11 | Paul M. Butler | 25 | Head | Station Attendant | California |
| 12 | Viola M. Butler | 17 | Wife | — | Missouri |
| 13 | Herman Kuhne | 57 | Head | Carpenter | Germany |
| 14 | Martha E. Kuhne | 48 | Wife | — | Germany |
| 15 | August Fiedler | 83 | Boarder | — | Germany |
| 16 | Mary E. Herrick | 60 | Head | Saleslady | New York |
| 17 | Estella Hanson | 63 | Head | — | California |
| 18 | George L. Reeder | 78 | Head | — | Indiana |
| 19 | Clara H. Reeder | 72 | Wife | — | Mass. |
| 20 | George Jr. Reeder | 38 | Son | — | Nebraska |
| 21 | Rose E. Rogers | 51 | Head | Teacher Blind | Missouri |
| 22 | Bernard Young | 27 | Head | Social Worker | Missouri |
| 23 | Ethel Young | 24 | Wife | — | Pennsylvania |
| 24 | Stephen Young | 2 | Son | — | California |
| 25 | Max G. Pavel | 53 | Head | — | California |
| 26 | Anna F. Pavel | 82 | Mother | — | Germany |
| 27 | Irving Pavel | 54 | Brother | — | California |
| 28 | Hans C. Christensen | 64 | Head | Teacher | Illinois |
| 29 | Caroline C. Christensen | 54 | Wife | — | Denmark |
| 30 | Herbert E. Christensen | 17 | Son | — | California |
| 31 | John L. Mohr | 25 | Head | Technician | Pennsylvania |
| 32 | Frances E. Mohr | 27 | Wife | Teacher | California |
| 33 | Anna Seidel | 71 | Head | — | Iowa |
| 34 | Lena Weber | 54 | Head | Housework | Austria |
| 35 | Ralph A. Unkenholz | 36 | Head | Dept Manager | Idaho |
| 36 | Hattie M. Unkenholz | 30 | Wife | — | Missouri |
| 37 | Marion Miller | 26 | Head | Engineer | Oregon |
| 38 | Doris J. Miller | 25 | Wife | — | Colorado |
| 39 | James Miller | 1 | Son | — | 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)