MH
Mary Hanna — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Napa-County, California
Our Model Tree links this Mary Hanna across the 1930 and 1940 US Censuses in Napa-County, California (XGBoost, ~Confirmed) — first a daughter (b.~1918), then head of a 6-person household.
Age 22
b. ~1918
Female
Daughter
Born: California
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Napa-County, California |
| Surname | Hanna |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | Napa City |
| 1935 Residence (County) | Napa |
| Additional Details | |
| Occupation | Office Clerk |
| Industry | Farm Implement |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 700 |
| Highest Grade | H-2 |
| 1935 Residence | Same place |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
| Occupation | Office Clerk |
| Township / Ward | Napa 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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Ruth Hanna | Daughter | — | 21 | ~1919 |
| Mary Hanna | Head | — | 56 | ~1884 |
| Joseph Keiser | Other | — | 69 | ~1871 |
| Theodore Rottlin | Other | — | 56 | ~1884 |
| Mary Hanna | Daughter | — | 22 | ~1918 |
| Louis Keiser | Other | — | 44 | ~1896 |
Census Appearances
1930
Napa, California
Daughter, age 13
Napa, California · implied b. ~1917 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hanna |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Switzerland |
| Mother's Birthplace | California |
| Can Read/Write | Yes |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1940
Napa-County, California
Daughter, age 22
Napa-County, California · implied b. ~1918 — 6 household members
| Surname | Hanna |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | Napa City |
| 1935 Residence (County) | Napa |
| Occupation | Office Clerk |
| Industry | Farm Implement |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 700 |
| Highest Grade | H-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 Hanna across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Hanna
Daughter · 1940 · age 22 · b. ~1918 · California
★ You are viewing this record
Sibling
Ruth Hanna
Sibling · 1940 · age 21
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 — Napa-County, California
Open full size
1940 US Federal Census — Napa-County, California
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-00269-00179)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Leon Blankenburg | 53 | Brother | Captain Police | California |
| 2 | Alice Blankenburg | 70 | Sister | — | Kansas |
| 3 | Howard Rogers | 74 | Head | — | Missouri |
| 4 | Julia Rogers | 70 | Wife | — | California |
| 5 | Elizabeth Burbank | 58 | Head | — | New York |
| 6 | Frederick Neumann | 71 | Head | — | Missouri |
| 7 | Josephine Neumann | 75 | Sister | — | Missouri |
| 8 | Vernon Lee | 50 | Head | Minister | Kansas |
| 9 | Martina Lee | 45 | Wife | — | Guatemala |
| 10 | Margaret Lee | 21 | Daughter | New Worker | New Jersey |
| 11 | David Lee | 13 | Son | — | California |
| 12 | Mary Hanna | 56 | Head | — | California |
| 13 | Mary Hanna THIS PERSON | 22 | Daughter | Office Clerk | California |
| 14 | Ruth Hanna | 21 | Daughter | Machine Operator | California |
| 15 | Joseph Keiser | 69 | Father | — | Switzerland |
| 16 | Louis Keiser | 44 | Brother | — | California |
| 17 | Theodore Rottlin | 56 | Lodger | Farm Laborer | California |
| 18 | Mervin Bernhart | 40 | Head | Sawyer | Nevada |
| 19 | Margaret Bernhart | 30 | Wife | — | California |
| 20 | Mervin Jr. Bernhart | 3 | Son | — | California |
| 21 | Ralph Butter | 68 | Head | Mayor | Oregon |
| 22 | Elizabeth Butter | 65 | Wife | — | California |
| 24 | Ann Mclaughlin | 23 | Head | Store Clerk | Arkansas |
| 25 | Elzie Mclaughlin | 23 | Wife | Machine Opertr | Arkansas |
| 26 | Frank Robinson | 39 | Head | Laborer Block | California |
| 27 | John Heim | 47 | Partner | Laborer Block | California |
| 28 | Newton Ridley | 34 | Head | Traveling Surveyor | California |
| 29 | Bernice Ridley | 40 | Wife | Elem. Teacher | Utah |
| 30 | John Swanson | 38 | Head | Bearer | Mass. |
| 31 | Mildred Swanson | 35 | Wife | Table Worker | Connecticut |
| 32 | Helen Blume | 40 | Head | Dramatic Teacher | California |
| 33 | Fred Brininger | 40 | Head | Truck Driver | Washington |
| 34 | Flossie Brininger | 36 | Wife | — | Iowa |
| 35 | Wayne Brininger | 13 | Son | — | California |
| 36 | Margaret Brininger | 6 | Daughter | — | California |
| 37 | Brininger | 4 | Daughter | — | California |
| 38 | Cameron Kimball | 54 | Head | Barber | Kansas |
| 39 | Laura Kimball | 53 | Wife | Clerk | California |
| 40 | Charles Peterson | 72 | Head | Fire Chief | 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)