MS
Mary Sheehan — 1940 US Census Record
Linked across censuses1940 United States Federal Census · San-Francisco-County, California
Our Model Tree links this Mary Sheehan across the 1920, 1930 and 1940 US Censuses in San-Francisco-County, California (XGBoost, ~Confirmed) — first a spouse (b.~1870), then head of a 4-person household.
Age 70
b. ~1870
Female
Spouse
Born: Ireland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | San-Francisco-County, California |
| Surname | Sheehan |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 70 |
| Marital Status | Married |
| Birthplace | Ireland |
| 1935 Residence (City) | San Francisco City |
| 1935 Residence (County) | San Francisco |
| Naturalization Status | Naturalized |
| Additional Details | |
| Highest Grade | H 3 |
| 1935 Residence | Same place |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
| Township / Ward | San Francisco City |
| Est. Birth Year | ~1870 |
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 |
|---|---|---|---|---|
| Sadie Sheehan | Daughter | — | 34 | ~1906 |
| Denis Sheehan | Head | — | 74 | ~1866 |
| Maurice Sheehan | Son | — | 32 | ~1908 |
| Mary Sheehan | Spouse | — | 70 | ~1870 |
Census Appearances
1920
San Francisco, …
Head, age 51
San Francisco, California · implied b. ~1869 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Shahan |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 51 |
| Marital Status | Divorced |
| Birthplace | Ireland |
| Year of Immigration | 1880 |
| 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 | M |
| Birth Country | Ireland |
| Year of Naturalization | 1887 |
| Birthplace (normalized) | ireland |
1930
San Francisco, …
Head, age 59
San Francisco, California · implied b. ~1871 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Sheahan |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 59 |
| Marital Status | Widowed |
| Birthplace | Ireland |
| Naturalization Status | Naturalized |
| Year of Immigration | 1880 |
| Age at First Marriage | 12 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Home Owned/Rented | O |
| Home Value / Rent | 14000 |
| Radio Set | R |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1940
San-Francisco-County, California
Spouse, age 70
San-Francisco-County, California · implied b. ~1870 — 4 household members
| Surname | Sheehan |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 70 |
| Marital Status | Married |
| Birthplace | Ireland |
| 1935 Residence (City) | San Francisco City |
| 1935 Residence (County) | San Francisco |
| Naturalization Status | Naturalized |
| Highest Grade | H 3 |
| 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 Sheehan 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 Sheehan
Spouse · 1940 · age 70 · b. ~1870 · 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
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1940 US Federal Census — San-Francisco-County, California
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00307-00689)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Rosa De Barr | 71 | Head | — | California |
| 2 | William De Barr | 41 | Son | Plumbers Helper | California |
| 3 | Joseph A. Wettstein | 41 | Head | Milk Driver | California |
| 4 | Agnes M. Wettstein | 38 | Wife | — | Switzerland |
| 5 | Joseph E. Wettstein | 14 | Son | — | California |
| 6 | Edward M. Wettstein | 12 | Son | — | California |
| 7 | Nick Mikolakis | 22 | Head | File Clerk | Nevada |
| 8 | Florence Mikolakis | 19 | Wife | — | California |
| 9 | Diane Mikolakis | 1 | Daughter | — | California |
| 10 | Cornelius P. Kelleher | 65 | Head | Fireman | Ireland |
| 11 | Mary B. Kelleher | 60 | Wife | — | Scotland |
| 12 | Mary D. Kelleher | 29 | Daughter | Stenographer | California |
| 13 | Edward P. Kelleher | 28 | Son | Cashier | California |
| 14 | Catherine F. Hanlon | 72 | Head | — | New York |
| 15 | Mervyn Hanlon | 43 | Son | Truck Driver | California |
| 16 | Veronica Hanlon | 41 | Daughter | Book Binder | California |
| 17 | Moritz Wertheim | 52 | Head | Medical Doctor | Germany |
| 18 | Ida Wertheim | 47 | Wife | — | Germany |
| 19 | Richard Mayer | 37 | Lodger | Medical Doctor | Germany |
| 20 | Mario Renzi | 37 | Head | Picket Spotter | Italy |
| 21 | Mamie Renzi | 31 | Wife | — | California |
| 22 | Adolph Renzi | 7 | Son | — | California |
| 23 | Rose Renzi | 3 | Daughter | — | California |
| 24 | Denis Sheehan | 74 | Head | Common Laborer | Ireland |
| 25 | Mary Sheehan THIS PERSON | 70 | Wife | — | Ireland |
| 26 | Sadie Sheehan | 34 | Daughter | Stenographer | California |
| 27 | Maurice Sheehan | 32 | Son | Laborer | California |
| 28 | Hugh H. Sargent | 31 | Head | Stenographer | New York |
| 29 | Alma Sargent | 31 | Wife | — | Montana |
| 30 | Lawrence Sargent | 7 | Son | — | Montana |
| 31 | Conrad Sargent | 5 | Son | — | Montana |
| 32 | Hugh H. Jr. Sargent | 3 | Son | — | Utah |
| 33 | Elva Martin | 43 | Head | — | Oklahoma |
| 34 | William Ecklard | 20 | Son | Lather Apprentice | California |
| 35 | Dale Ecklard | 17 | Son | — | California |
| 36 | Ralph Mardueno | 41 | Head | Cabinet Maker | Mexico |
| 37 | Mary Mardueno | 38 | Wife | — | Mexico |
| 38 | Manuel Schiaffino | 24 | Head | Warehouseman | California |
| 39 | Louise Schiaffino | 21 | Wife | — | Mexico |
| 40 | Mary Lou Schiaffino | 2 | Daughter | — | 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)