MH
Mary Hickey — 1940 US Census Record
Linked across censuses1940 United States Federal Census · San-Francisco-County, California
Our Model Tree links this Mary Hickey across the 1920, 1930 and 1940 US Censuses in San-Francisco-County, California (XGBoost, ~Confirmed) — first a spouse (b.~1883), then head of a 5-person household.
Age 57
b. ~1883
Female
Spouse
Born: New York
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | San-Francisco-County, California |
| Surname | HICKEY |
| Given Name | MARY |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 57 |
| Marital Status | Married |
| Birthplace | New York |
| 1935 Residence (City) | SAN FRANCISCO |
| 1935 Residence (County) | SAN FRANCISCO |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | No 6 |
| 1935 Residence | Same House |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
| Township / Ward | San Francisco |
| Est. Birth Year | ~1883 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Maurice Hickey | Head | — | 56 | ~1884 |
| Vernon Hickey | Son | — | 23 | ~1917 |
| John Hickey | Son | — | 28 | ~1912 |
| James Hickey | Son | — | 34 | ~1906 |
| Mary Hickey | Spouse | — | 57 | ~1883 |
Census Appearances
1920
San Francisco, …
Spouse, age 35
San Francisco, California · implied b. ~1885 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hickey |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 35 |
| Marital Status | Married |
| Birthplace | New York |
| Father's Birthplace | Austria |
| Mother's Birthplace | Austria |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Bohemian |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
1930
San Francisco, …
Spouse, age 45
San Francisco, California · implied b. ~1885 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hickey |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 45 |
| Marital Status | Married |
| Birthplace | New York |
| Age at First Marriage | 23 |
| Father's Birthplace | New York |
| Mother's Birthplace | New York |
| Occupation | Housewife |
| Industry | At home |
| Class of Worker | NP |
| Can Read/Write | Yes |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
1940
San-Francisco-County, California
Spouse, age 57
San-Francisco-County, California · implied b. ~1883 — 5 household members
| Surname | HICKEY |
| Given Name | MARY |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 57 |
| Marital Status | Married |
| Birthplace | New York |
| 1935 Residence (City) | SAN FRANCISCO |
| 1935 Residence (County) | SAN FRANCISCO |
| Income (1939) | 0 |
| Highest Grade | No 6 |
| 1935 Residence | Same House |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
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 Hickey 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 Hickey
Spouse · 1940 · age 57 · b. ~1883 · 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 — San-Francisco-County, California
Open full size
1940 US Federal Census — San-Francisco-County, California
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-00300-00687)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Adolph Schumann | 79 | Head | — | California |
| 42 | Caroline Schumann | 71 | Wife | — | Germany |
| 43 | Emily B Schumann | 50 | Daughter | — | California |
| 45 | Maurice C Hickey | 56 | Head | — | California |
| 46 | Mary Hickey THIS PERSON | 57 | Wife | — | New York |
| 47 | James Hickey | 34 | Son | Cab Driver | California |
| 48 | John Hickey | 28 | Son | Seaman | California |
| 49 | Vernon Hickey | 23 | Son | Seaman | California |
| 50 | Humberto Martinez | 35 | Head | Elec Welder | Mexico |
| 51 | Emelia Martinez | 28 | Wife | — | California |
| 52 | Rudolph Martinez | 5 | Son | — | California |
| 53 | Victor Lercari | 37 | Head | Baker | California |
| 54 | Myrtle Lercari | 37 | Wife | — | California |
| 55 | Lorraine Lercari | 14 | Daughter | — | California |
| 56 | Beverly Lercari | 7 | Daughter | — | California |
| 57 | Robert Lagarrigue | 5 | Nephew | — | California |
| 58 | John Volson | 55 | Head | Cement Wker | Finland |
| 59 | Ida Volson | 56 | Wife | — | Finland |
| 60 | Doris Volson | 17 | Daughter | Stenographer | California |
| 61 | Arvid Volson | 15 | Son | — | California |
| 62 | Arthur Iturriaga | 59 | Head | Janitor | California |
| 63 | Eugenia Iturriaga | 59 | Wife | — | Germany |
| 64 | Willie Iturriaga | 27 | Son | Machinist | California |
| 65 | Ruth Iturriaga | 19 | Daughter | Waitress | California |
| 66 | Otto Iturriaga | 8 | Grandson | — | California |
| 67 | Harold R Allee | 33 | Head | Janitor | Oklahoma |
| 68 | Clara Allee | 38 | Wife | — | Russia |
| 69 | Robert P Allee | 2 | Son | — | California |
| 70 | Ralph Conway | 28 | Head | Truck Driver | Texas |
| 71 | Ramona Conway | 25 | Wife | — | California |
| 72 | Alex Shubin | 58 | Head | Sheep Scaler | Russia |
| 73 | Fannie Shubin | 56 | Wife | — | Russia |
| 74 | Augusta Shubin | 30 | Daughter | Pantry | California |
| 75 | Vera Shubin | 22 | Daughter | File Clerk | California |
| 76 | William Stewart | 50 | Head | Carpenter | California |
| 77 | Anna Stewart | 48 | Wife | Sewing | California |
| 78 | Dorothy Stewart | 25 | Daughter | File Clerk | California |
| 79 | Wilma Stewart | 14 | Daughter | — | California |
| 80 | Clarence Smith | 34 | Head | Mechanic | 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)