MS
Mary Sweeney — 1940 US Census Record
Linked across censuses1940 United States Federal Census · San-Francisco-County, California
Our Model Tree links this Mary Sweeney across the 1920, 1930 and 1940 US Censuses in San-Francisco-County, California (XGBoost, ~Confirmed) — first a spouse (b.~1893), then head of a 3-person household.
Age 47
b. ~1893
Female
Spouse
Born: Ireland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | San-Francisco-County, California |
| Surname | Sweeney |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 47 |
| Marital Status | Married |
| Birthplace | Ireland |
| 1935 Residence (City) | San Francisco |
| 1935 Residence (County) | San Francisco |
| Naturalization Status | Naturalized |
| Additional Details | |
| Highest Grade | No 8 |
| 1935 Residence | Same Place |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
| Township / Ward | San Francisco |
| Est. Birth Year | ~1893 |
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 |
|---|---|---|---|---|
| Michael Sweeney | Head | — | 56 | ~1884 |
| Joseph Sweeney | Son | — | 22 | ~1918 |
| Mary Sweeney | Spouse | — | 47 | ~1893 |
Census Appearances
1920
San Francisco, …
Spouse, age 26
San Francisco, California · implied b. ~1894 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Sweeney |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 26 |
| Marital Status | Married |
| Birthplace | Ireland |
| Year of Immigration | 1914 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1930
City County …
Spouse, age 37
City County Of San Francisco, California · implied b. ~1893 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Sweeney |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 37 |
| Marital Status | Married |
| Birthplace | Ireland |
| Age at First Marriage | 19 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read/Write | Yes |
| Mother Tongue | 00 |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1940
San-Francisco-County, California
Spouse, age 47
San-Francisco-County, California · implied b. ~1893 — 3 household members
| Surname | Sweeney |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 47 |
| Marital Status | Married |
| Birthplace | Ireland |
| 1935 Residence (City) | San Francisco |
| 1935 Residence (County) | San Francisco |
| Naturalization Status | Naturalized |
| Highest Grade | No 8 |
| 1935 Residence | Same Place |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
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 Sweeney across 3 US Census years (1920, 1930 and 1940) in 3 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Sweeney
Spouse · 1940 · age 47 · b. ~1893 · 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 — San-Francisco-County, California
Open full size
1940 US Federal Census — San-Francisco-County, California
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00320-00114)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Marie Woodson | 18 | Daughter | — | Ind |
| 42 | Lyle Woodson | 15 | Son | — | Minn |
| 43 | Ben T Culleton | 44 | Head | Engineer | Wyo |
| 44 | Adelen Culleton | 45 | Wife | — | Maine |
| 45 | Rebecca Linville | 43 | Head | — | England |
| 46 | Laurel Linville | 18 | Daughter | — | Calif |
| 47 | Donald Linville | 16 | Son | — | Calif |
| 48 | Henry A Kroencke | 35 | Head | Bus Driver | Calif |
| 49 | Jessie L Kroencke | 33 | Wife | — | Ky |
| 50 | Henry Jr Kroencke | 12 | Son | — | Calif |
| 51 | Barbara Kroencke | 10 | Daughter | — | Calif |
| 52 | Jessie Johnson | 56 | Head | — | Mo |
| 53 | Elmer Hayes | 17 | Nephew | Attendant | Calif |
| 54 | Kenneth M Miller | 32 | Head | Book Binder | Canada |
| 55 | Mona E Miller | 23 | Wife | — | Canada |
| 56 | Patricia Miller | 5 | Daughter | — | Calif |
| 57 | June Miller | 3 | Daughter | — | Calif |
| 58 | Dorothy Miller | 2 | Daughter | — | Calif |
| 59 | Frank De Lano | 82 | Head | — | Maine |
| 60 | Louise De Lano | 63 | Wife | — | Canada |
| 61 | Theo Webb | 42 | Head | Laborer | Virginia |
| 62 | Mary J Webb | 22 | Wife | — | Arkansas |
| 63 | John Webb | 2 | Son | — | Calif |
| 64 | Joseph Glassberg | 57 | Head | Merchant | England |
| 65 | Rose Glassberg | 56 | Wife | Saleslady | Penn |
| 66 | Toyota Nitasaka | 51 | Head | Cleaning | Japan |
| 67 | Sugi Nitasaka | 44 | Wife | — | Japan |
| 68 | Hisaki Nitasaka | 19 | Son | — | Calif |
| 69 | Yutaka Nitasaka | 16 | Daughter | — | Calif |
| 70 | Kazuye Nitasaka | 12 | Daughter | — | Calif |
| 71 | Takeo Fujino | 25 | Son-in-law | Dishwasher | Japan |
| 72 | Tamaki Fujino | 18 | Daughter | — | Calif |
| 73 | Akira Fujino | 1 | Gr Son | — | Calif |
| 74 | Yotie Ota | 68 | Head | Painter | Japan |
| 75 | Aye Ota | 52 | Wife | — | Japan |
| 76 | Sukehiko Ota | 23 | Son | — | Japan |
| 77 | Alice Ota | 17 | Daughter | — | Calif |
| 78 | Michael Sweeney | 56 | Head | Policeman | Ireland |
| 79 | Mary Sweeney THIS PERSON | 47 | Wife | — | Ireland |
| 80 | Joseph Sweeney | 22 | Son | — | Calif |
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)