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Mary Long — 1940 US Census Record
Model Tree available1940 United States Federal Census · Los-Angeles-County, California
Our Model Tree links this Mary Long across the 1920, 1930 and 1940 US Censuses in Los-Angeles-County, California (XGBoost, ~Confirmed), with identified parents Stephen & Mary — first a spouse (b.~1912), then head of a 8-person household.
Age 28
b. ~1912
Female
Spouse
Born: California
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Los-Angeles-County, California |
| Surname | Long |
| Given Name | Mary |
| Relationship to Head | wife |
| Sex | F |
| Color / Race | White |
| Age | 28 |
| Marital Status | Married |
| Birthplace | California |
| 1935 Residence (City) | Hollywood |
| 1935 Residence (County) | Los Angeles |
| Additional Details | |
| Class of Worker | 0 |
| Hours Worked | 0 |
| Highest Grade | C 4 |
| 1935 Residence | California |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
| Township / Ward | Burbank City |
| Est. Birth Year | ~1912 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Lois Long | Daughter | — | 10 | ~1930 |
| Marylyn Long | Daughter | — | 12 | ~1928 |
| Monica Long | Daughter | — | 13 | ~1927 |
| Martin Long | Head | — | 39 | ~1901 |
| Gertrude Johnson | Other | — | 19 | ~1921 |
| Robert Long | Son | — | 6 | ~1934 |
| Knox Long | Son | — | 6 | ~1934 |
| Mary Long | Spouse | — | 28 | ~1912 |
Census Appearances
1920
Los Angeles, …
Daughter, age 8
Los Angeles, California · implied b. ~1912 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Long |
| Given Name | Mary B. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 8 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Kentucky |
| Mother's Birthplace | Missouri |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1930
Los Angeles, …
Daughter, age 18
Los Angeles, California · implied b. ~1912 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Long |
| Given Name | Mary A |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Kentucky |
| Mother's Birthplace | Missouri |
| Can Read/Write | Yes |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1940
Los-Angeles-County, California
Spouse, age 28
Los-Angeles-County, California · implied b. ~1912 — 8 household members
| Surname | Long |
| Given Name | Mary |
| Relationship to Head | wife |
| Sex | F |
| Color / Race | White |
| Age | 28 |
| Marital Status | Married |
| Birthplace | California |
| 1935 Residence (City) | Hollywood |
| 1935 Residence (County) | Los Angeles |
| Class of Worker | 0 |
| Hours Worked | 0 |
| Highest Grade | C 4 |
| 1935 Residence | California |
| 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 Long across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Stephen Long (~0.92 confidence) and mother Mary Long (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Stephen Long
b. ~1865
Source father
● Household
· direct · ~0.92
Mother
Mary Long
b. ~1872
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Long
Spouse · 1940 · age 28 · b. ~1912 · California
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Los-Angeles-County, California
Open full size
1940 US Federal Census — Los-Angeles-County, California
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00229-00693)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Roy Wilbur Barron | 21 | lodger | Mechanic | California |
| 42 | Oscar Williamson | 33 | head | Auditor | Michigan |
| 43 | Helen Williamson | 20 | wife | — | Michigan |
| 44 | John Williamson | 2 | son | — | Illinois |
| 45 | Mildred Perry | 19 | lodger | Stenographer | Kansas |
| 46 | Jean D. Perry | 16 | nurse girl | Mothers Helper | Kansas |
| 47 | Sherwood Trevor | 25 | head | Sub-Station Operator | California |
| 48 | Richard Trevor | 21 | brother | Apprentice Carpenter | California |
| 49 | Nelson Holt | 23 | lodger | Painter | California |
| 50 | Hugh Lagerstrom | 38 | head | Electrician | Kansas |
| 51 | Dorothy Lagerstrom | 34 | wife | — | Missouri |
| 52 | Constance Lagerstrom | 11 | daughter | — | California |
| 53 | Martin Luther Long | 39 | head | Minister | Washington |
| 54 | Mary Long THIS PERSON | 28 | wife | — | California |
| 55 | Monica Long | 13 | daughter | — | California |
| 56 | Marylyn Long | 12 | daughter | — | Illinois |
| 57 | Lois Long | 10 | daughter | — | Illinois |
| 58 | Robert Long | 6 | son | — | Illinois |
| 59 | Knox Long | 6 | son | — | Illinois |
| 60 | Gertrude Johnson | 19 | maid | House Worker | California |
| 61 | Edna Pollock | 54 | head | — | Iowa |
| 62 | Anna Atkinson | 79 | mother | — | Iowa |
| 63 | H. D. Atkinson | 42 | brother | Laborer | Iowa |
| 64 | Cymphorosa Trigoyen | 31 | head | Proprietor | California |
| 65 | William B. Jr. Barber | 28 | lodger | Template Maker | Missouri |
| 66 | John Newell | 28 | lodger | Fuselage Assembler | Nebraska |
| 67 | Richard Foster | 22 | lodger | Tool And Die Maker | Nebraska |
| 68 | William Otto | 24 | lodger | Fuselage Assembler | Colorado |
| 69 | William Zimmerman | 22 | lodger | Sheet Metal Worker | Alaska |
| 70 | James J. Barwick | 39 | head | Pilot | Georgia |
| 71 | Marcella Barwick | 33 | wife | — | Iowa |
| 72 | Barbara Barwick | 7 | daughter | — | Iowa |
| 73 | Sally Ann Barwick | 4 | daughter | — | Montana |
| 74 | Jacqueline Suiter | 22 | hired girl | Mothers Helper | England |
| 75 | Joseph Lang | 47 | head | Auditor | Wisconsin |
| 76 | Georgia Lang | 45 | wife | — | Wisconsin |
| 77 | Donald Lang | 5 | son | — | Minnesota |
| 78 | Alfred Korb | 35 | head | Maintenance Engineer | Massachusetts |
| 79 | Eleanor Korb | 33 | wife | — | Massachusetts |
| 80 | Alfred Korb | 5 | son | — | Massachusetts |
Related Census Records
Pedigree Summary
Mary
Gen 1 · 2 parents
~0.92
Max depth 4 (1900–1950 window)
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)