MR
Mary Riley — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Los-Angeles-County, California
Our Model Tree links this Mary Riley across the 1920, 1930 and 1940 US Censuses in Los-Angeles-County, California (XGBoost, ~Confirmed) — first a head (b.~1864), then head of a 3-person household.
Age 76
b. ~1864
Female
Head
Born: England
Widowed
1940 Census Record Details
| Census Year | 1940 |
| Location | Los-Angeles-County, California |
| Surname | Riley |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 76 |
| Marital Status | Widowed |
| Birthplace | England |
| 1935 Residence (City) | Los Angeles City |
| 1935 Residence (County) | Los Angeles |
| Naturalization Status | Naturalized |
| Additional Details | |
| Highest Grade | No 4 |
| 1935 Residence | Same House |
| Birth Country | England |
| Birthplace (normalized) | england |
| Township / Ward | Los Angeles City |
| Est. Birth Year | ~1864 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Riley | Head | — | 76 | ~1864 |
| Michael Mchale | Other | — | 70 | ~1870 |
| Thomas Riley | Son | — | 40 | ~1900 |
Census Appearances
1920
Los Angeles, …
Head, age 55
Los Angeles, California · implied b. ~1865 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Riley |
| Given Name | Mary A |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 55 |
| Marital Status | Widowed |
| Birthplace | England |
| Year of Immigration | 1882 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Home Owned/Rented | O |
| Home Free/Mortgaged | F |
| Birth Country | England |
| Year of Naturalization | 1890 |
| Birthplace (normalized) | england |
1930
Los Angeles, …
Other, age 65
Los Angeles, California · implied b. ~1865 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Riley |
| Given Name | Mary C |
| Relationship to Head | Mother |
| Sex | F |
| Color / Race | White |
| Age | 65 |
| Marital Status | Widowed |
| Birthplace | England |
| Naturalization Status | Naturalized |
| Year of Immigration | 1882 |
| Age at First Marriage | 22 |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | Irish Free State |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Birth Country | England |
| Birthplace (normalized) | england |
1940
Los-Angeles-County, California
Head, age 76
Los-Angeles-County, California · implied b. ~1864 — 3 household members
| Surname | Riley |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 76 |
| Marital Status | Widowed |
| Birthplace | England |
| 1935 Residence (City) | Los Angeles City |
| 1935 Residence (County) | Los Angeles |
| Naturalization Status | Naturalized |
| Highest Grade | No 4 |
| 1935 Residence | Same House |
| Birth Country | England |
| Birthplace (normalized) | england |
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 Riley across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Riley
Head · 1940 · age 76 · b. ~1864 · California
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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-t0627-00396-00255)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Patrick J. Laughlin | 57 | Head | Office Manager | Eire |
| 2 | Frederick J. Laughlin | 20 | Son | Clerical | Missouri |
| 3 | John Henry Laughlin | 19 | Son | Clerical | Missouri |
| 4 | Call-Back | None | — | — | — |
| 5 | Call-Back | None | — | — | — |
| 6 | Call-Back | None | — | — | — |
| 7 | Lucille @ Deiss | 72 | Head | — | Louisiana |
| 8 | Lauch Albert A. Deiss | 54 | Son | Sound Technician | Louisiana |
| 9 | Mary Riley THIS PERSON | 76 | Head | — | England |
| 10 | Thomas Riley | 40 | Son | Electrician | California |
| 11 | Michael Mchale | 70 | Brother | — | New York |
| 12 | Luini Bordonaro | 50 | Head | — | Italy |
| 13 | Pearl Ethel Ryan | 52 | Head | — | Illinois |
| 14 | Olga Luttring | 30 | Lodger | Typist | Illinois |
| 15 | Charles Landau | 69 | Head | Laborer | Russia |
| 16 | Celia Landau | 69 | Wife | — | Russia |
| 17 | Harriet @ Hallyarth | 72 | Head | — | Wisconsin |
| 18 | Caesar Azzoni | 70 | Head | — | Italy |
| 19 | Paulina Azzoni | 65 | Wife | — | Italy |
| 20 | Andrew Azzoni | 31 | Son | Waiter | New York |
| 21 | Henry Azzoni | 30 | Son | Plumber | New York |
| 22 | Rosa V. @ Gamble | 37 | Head | Clerical | California |
| 23 | Cyrus N. Sr. Vestrup | 46 | Head | Electric Mechanic | Illinois |
| 24 | Gertrude S. Vestrup | 44 | Wife | — | Illinois |
| 25 | Cyrus N. Jr. Vestrup | 14 | Son | — | California |
| 26 | Alfred Nelson | 65 | Head | — | Sweden |
| 27 | Amanda A. Nelson | 68 | Wife | — | Sweden |
| 28 | John W. @ Boatright | 70 | Head | — | Iowa |
| 29 | Saraetta Boatright | 24 | Daughter | Switchboard Operator | Colorado |
| 30 | Melvin C. Boatright | 26 | Son | Attendant | California |
| 31 | Norman N. Williams | 22 | Head | Filing Clerk | California |
| 32 | Neva F. Williams | 20 | Wife | — | Ohio |
| 33 | Abraham Gipser | 63 | Head | Credit Man | New York |
| 34 | Sadie @ Gipser | 55 | Wife | — | Illinois |
| 35 | David W. Gipser | 21 | Son | Apprentice | California |
| 36 | Donald G. Brookins | 31 | Head | Clerical | Ohio |
| 37 | Elizabeth V. Brookins | 29 | Wife | — | Pennsylvania |
| 38 | Gloria C. Brookins | 5 | Daughter | — | California |
| 39 | John L. Stewart | 41 | Head | Tire Salesman | Illinois |
| 40 | Pauline M. Stewart | 34 | Wife | — | Missouri |
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)