MJ
Mary Jenkins — 1940 US Census Record
Model Tree available1940 United States Federal Census · Los-Angeles-County, California
Our Model Tree links this Mary Jenkins across the 1920, 1930 and 1940 US Censuses in Los-Angeles-County, California (XGBoost, ~Confirmed), with identified parents Richard & R — first a daughter (b.~1910), then head of a 4-person household.
Age 30
b. ~1910
Female
Daughter
Born: Kansas
Divorced
1940 Census Record Details
| Census Year | 1940 |
| Location | Los-Angeles-County, California |
| Surname | Jenkins |
| Given Name | Mary Ellen |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 30 |
| Marital Status | Divorced |
| Birthplace | Kansas |
| 1935 Residence (City) | Whittier city |
| Additional Details | |
| Occupation | Bookkeeper |
| Industry | Plumbing |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 210 |
| Highest Grade | C 2 |
| Birth State | Kansas |
| Birth Country | United States |
| Birthplace (normalized) | kansas |
| Occupation | Bookkeeper |
| Township / Ward | Whittier 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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Margaret Jenkins | Daughter | — | 24 | ~1916 |
| Mary Jenkins | Daughter | — | 30 | ~1910 |
| Richard Jenkins | Head | — | 74 | ~1866 |
| Florence Jenkins | Spouse | — | 60 | ~1880 |
Census Appearances
1920
Los Angeles, …
Daughter, age 9
Los Angeles, California · implied b. ~1911 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jenkins |
| Given Name | Mary Ellen |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | Kansas |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Ohio |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Kansas |
| Birth Country | United States |
| Birthplace (normalized) | kansas |
1930
Los Angeles, …
Daughter, age 20
Los Angeles, California · implied b. ~1910 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jenkins |
| Given Name | Mary E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Kansas |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Ohio |
| Occupation | Bookkeeper |
| Industry | Plumbing Shop |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Kansas |
| Birth Country | United States |
| Birthplace (normalized) | kansas |
1940
Los-Angeles-County, California
Daughter, age 30
Los-Angeles-County, California · implied b. ~1910 — 4 household members
| Surname | Jenkins |
| Given Name | Mary Ellen |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 30 |
| Marital Status | Divorced |
| Birthplace | Kansas |
| 1935 Residence (City) | Whittier city |
| Occupation | Bookkeeper |
| Industry | Plumbing |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 210 |
| Highest Grade | C 2 |
| Birth State | Kansas |
| Birth Country | United States |
| Birthplace (normalized) | kansas |
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 Jenkins across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Richard Jenkins (~0.92 confidence) and father R Jenkins (~0.92 confidence) and mother Florence Jenkins (~0.92 confidence) and mother Florence Jenkins (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Richard Jenkins
b. ~1866
Source father
● Household
· direct · ~0.92
Father
R Jenkins
b. ~1866
Source father
● Household
· direct · ~0.92
Mother
Florence Jenkins
b. ~1880
Source mother
● Household
· direct · ~0.92
Mother
Florence Jenkins
b. ~1880
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Jenkins
Daughter · 1940 · age 30 · b. ~1910 · California
★ You are viewing this record
Sibling
Margaret Jenkins
Sibling · 1940 · age 24
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 — 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-t0627-00259-00320)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Darlene Troutman | 16 | Wife | — | New Mexico |
| 42 | Ruth Troutman | 18 | Sister-in-law | — | New Mexico |
| 43 | James C Beck | 23 | Head | Pressman | Pennsylvania |
| 44 | Marjorie Beck | 20 | Wife | — | Wyoming |
| 45 | Nancy Beck | 1 | Daughter | — | California |
| 46 | James C Beck | 60 | Father | Horseshoer | Pennsylvania |
| 47 | Richard Hopkins | 74 | Head | — | Kentucky |
| 48 | Eva Hopkins | 65 | Wife | — | Washington |
| 49 | Eugene Hopkins | 25 | Son | Laborer | Washington |
| 50 | Richard Jenkins | 74 | Head | — | Indiana |
| 51 | Florence Jenkins | 60 | Wife | — | Ohio |
| 52 | Mary Ellen Jenkins THIS PERSON | 30 | Daughter | Bookkeeper | Kansas |
| 53 | Margaret Jenkins | 24 | Daughter | Office Girl | Arkansas |
| 54 | John Kermstrong | 36 | Head | Clerk | California |
| 55 | Selma Kermstrong | 32 | Wife | — | Idaho |
| 56 | Jack Kermstrong | 13 | Son | — | California |
| 57 | Alice Kermstrong | 9 | Daughter | — | California |
| 58 | Flora Walton | 34 | Head | Distributor Worker | South Dakota |
| 59 | Howard Walton | 16 | Son | — | California |
| 60 | Donald Walton | 14 | Son | — | California |
| 61 | David O Frances | 74 | Head | — | Wales |
| 62 | Jessie Frances | 61 | Wife | — | Georgia |
| 63 | Mayme Couch | 78 | Head | — | Ohio |
| 64 | Harry C Hall | 42 | Nephew | Ranch Foreman | Ohio |
| 65 | James Walker | 22 | Head | Plasterer | Kansas |
| 66 | Pearl Walker | 19 | Wife | — | Kansas |
| 67 | Carolyn Walker | 1 | Daughter | — | Kansas |
| 68 | Heavis Walker | 0 | Daughter | — | California |
| 69 | Richard Walker | 21 | Brother | Gardener | Kansas |
| 70 | Carrie Conover | 69 | Head | — | Ohio |
| 71 | James Winfrey | 22 | Head | Laborer | Missouri |
| 72 | Oma D Winfrey | 23 | Wife | Packer | Missouri |
| 73 | Ruth Winfrey | 3 | Daughter | — | California |
| 74 | James Winfrey | 2 | Son | — | California |
| 75 | Ralph Dillon | 31 | Head | Laborer | Kansas |
| 76 | Litta Dillon | 30 | Wife | Washer | Kansas |
| 77 | Earl Keith | 23 | Head | Mechanic | Indiana |
| 78 | Rosetta Keith | 23 | Wife | — | Colorado |
| 79 | Jewel Lee Keith | 1 | Daughter | — | Colorado |
| 80 | Joseph Tyone | 43 | Head | Dentist'S Assistant | Missouri |
Related Census Records
Pedigree Summary
Mary + 1 sibling
Gen 1 · 4 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)