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Mary Bailey — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Trinity-County, California
Our Model Tree links this Mary Bailey across the 1930 and 1940 US Censuses in Trinity-County, California (XGBoost, ~Confirmed) — first a daughter (b.~1925), then head of a 14-person household.
Age 15
b. ~1925
Female
Daughter
Born: California
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Trinity-County, California |
| Surname | Bailey |
| Given Name | Mary E |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | Mad River Judicial Township |
| 1935 Residence (County) | Trinity |
| Additional Details | |
| Highest Grade | 8 |
| 1935 Residence | Same home |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
| Township / Ward | Mad River Judicial Township |
| 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.
14 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Loy Bailey | Daughter | — | 2 | ~1938 |
| Mildred Bailey | Daughter | — | 16 | ~1924 |
| Alice Bailey | Daughter | — | 14 | ~1926 |
| Emma Bailey | Daughter | — | 12 | ~1928 |
| Mary Bailey | Daughter | — | 15 | ~1925 |
| William Bailey | Head | — | 58 | ~1882 |
| Norman Bailey | Son | — | 1 | ~1939 |
| Harold Bailey | Son | — | 17 | ~1923 |
| Frances Bailey | Son | — | 6 | ~1934 |
| William Bailey | Son | — | 11 | ~1929 |
| Thomas Bailey | Son | — | 7 | ~1933 |
| Archie Bailey | Son | — | 20 | ~1920 |
| Curtis Bailey | Son | — | 4 | ~1936 |
| Mildred Bailey | Spouse | — | 42 | ~1898 |
Census Appearances
1930
Trinity, California
Daughter, age 5
Trinity, California · implied b. ~1925 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Bailey |
| Given Name | Mary E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Missouri |
| Mother's Birthplace | California |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1940
Trinity-County, California
Daughter, age 15
Trinity-County, California · implied b. ~1925 — 14 household members
| Surname | Bailey |
| Given Name | Mary E |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | Mad River Judicial Township |
| 1935 Residence (County) | Trinity |
| Highest Grade | 8 |
| 1935 Residence | Same home |
| 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 Bailey across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Bailey
Daughter · 1940 · age 15 · b. ~1925 · California
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Sibling
Archie Bailey
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Curtis Bailey
Sibling · 1940 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Norman Bailey
Sibling · 1940 · age 1
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Emma Bailey
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mildred Bailey
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Frances Bailey
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Bailey
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Harold Bailey
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Bailey
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Alice Bailey
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Loy Bailey
Sibling · 1940 · age 2
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 — Trinity-County, California
Open full size
1940 US Federal Census — Trinity-County, California
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00356-00066)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Lloyd J White | 47 | Brother | Cattleman | California |
| 2 | Allan L White | 28 | Head | Cattleman | California |
| 3 | Verna White | 23 | Wife | — | California |
| 4 | Robert White | 5 | Son | — | California |
| 5 | Clifford D White | 23 | Head | Cattleman | California |
| 6 | Thelma White | 18 | Wife | — | California |
| 7 | Darrell White | 2 | Son | — | California |
| 8 | Stanley White | 24 | Head | Cattleman | California |
| 9 | David H Martin | 58 | Head | Rancher | N. Carolina |
| 10 | Sarah L Martin | 58 | Wife | — | N. Carolina |
| 11 | William A Bailey | 58 | Head | Painter | Missouri |
| 12 | Mildred B Bailey | 42 | Wife | — | California |
| 13 | Archie A Bailey | 20 | Son | Rancher | California |
| 14 | Harold R Bailey | 17 | Son | — | California |
| 15 | Mildred H Bailey | 16 | Daughter | — | California |
| 16 | Mary E Bailey THIS PERSON | 15 | Daughter | — | California |
| 17 | Alice D Bailey | 14 | Daughter | — | California |
| 18 | Emma Bailey | 12 | Daughter | — | California |
| 19 | William M Bailey | 11 | Son | — | California |
| 20 | Thomas L Bailey | 7 | Son | — | California |
| 21 | Frances K Bailey | 6 | Son | — | California |
| 22 | Curtis R Bailey | 4 | Son | — | California |
| 23 | Loy H Bailey | 2 | Daughter | — | California |
| 24 | Norman E Bailey | 1 | Son | — | California |
| 25 | Dean R Stanley | 44 | Head | Rancher | Kansas |
| 26 | Louella Stanley | 36 | Wife | — | Texas |
| 27 | Ina Stanley | 12 | Daughter | — | California |
| 28 | Martha Stanley | 9 | Daughter | — | California |
| 29 | Nancy Stanley | 3 | Daughter | — | California |
| 30 | Thomas Harmon | 81 | Lodger | — | Tennessee |
| 31 | Paul G Newmaker | 43 | Head | Foreman | Texas |
| 32 | Denise M Newmaker | 33 | Wife | — | California |
| 33 | Robert D Newmaker | 10 | Son | — | California |
| 34 | Carol L Newmaker | 6 | Daughter | — | California |
| 35 | Walter Braggie | 55 | Head | Laborer | Switzerland |
| 36 | Isaac E Murray | 63 | Head | Laborer | California |
| 37 | Nora N Murray | 38 | Wife | — | California |
| 38 | Robert B Henderson | 22 | Head | Laborer | California |
| 39 | Lloyd E Holmes | 44 | Lodger | Laborer | California |
| 40 | Al Swain | 42 | Lodger | Laborer | California |
Related Census Records
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)