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Mary Reilly — 1940 US Census Record
Linked across censuses1940 United States Federal Census · San-Francisco-County, California
Our Model Tree links this Mary Reilly across the 1930 and 1940 US Censuses in San-Francisco-County, California (XGBoost, ~Confirmed) — first a daughter (b.~1921), then head of a 8-person household.
Age 19
b. ~1921
Female
Daughter
Born: California
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | San-Francisco-County, California |
| Surname | Reilly |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | San Francisco |
| 1935 Residence (County) | San Francisco |
| Additional Details | |
| Occupation | Stenographer |
| Industry | Gear Mfg. |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1000 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
| Occupation | Stenographer |
| Township / Ward | San Francisco |
| Est. Birth Year | ~1921 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Ruth Reilly | Daughter | — | 21 | ~1919 |
| Mary Reilly | Daughter | — | 19 | ~1921 |
| Demetria Reilly | Daughter | — | 17 | ~1923 |
| Thomas Reilly | Head | — | 57 | ~1883 |
| John Synnerholm | Other | — | 68 | ~1872 |
| William Reilly | Son | — | 13 | ~1927 |
| John Reilly | Son | — | 15 | ~1925 |
| Mary Reilly | Spouse | — | 54 | ~1886 |
Census Appearances
1930
San Francisco, …
Daughter, age 9
San Francisco, California · implied b. ~1921 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Riley |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Jugoslavia |
| Mother's Birthplace | Jugoslavia |
| Can Read/Write | Yes |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1940
San-Francisco-County, California
Daughter, age 19
San-Francisco-County, California · implied b. ~1921 — 8 household members
| Surname | Reilly |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | San Francisco |
| 1935 Residence (County) | San Francisco |
| Occupation | Stenographer |
| Industry | Gear Mfg. |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1000 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
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 Reilly across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Reilly
Daughter · 1940 · age 19 · b. ~1921 · California
★ You are viewing this record
Sibling
Demetria Reilly
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Reilly
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ruth Reilly
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Reilly
Sibling · 1940 · age 13
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 — 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-t0627-00316-00613)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Melvin Fitzhenry | 3 | Son | — | California |
| 42 | Mildred Fitzhenry | 3 | Daughter | — | California |
| 43 | John Fitzhenry | 1 | Son | — | California |
| 44 | Thomas Reilly | 57 | Head | Machinist | California |
| 45 | Mary Reilly | 54 | Wife | — | California |
| 46 | Ruth Reilly | 21 | Daughter | — | California |
| 47 | Mary Reilly THIS PERSON | 19 | Daughter | Stenographer | California |
| 48 | Demetria Reilly | 17 | Daughter | — | California |
| 49 | John Reilly | 15 | Son | — | California |
| 50 | William Reilly | 13 | Son | — | California |
| 51 | John Synnerholm | 68 | Boarder | Mariner | Sweden |
| 52 | Raymond Lanthier | 46 | Head | Print Maker | California |
| 53 | Mabelle Lanthier | 43 | Wife | — | California |
| 54 | Raymond Lanthier | 17 | Son | — | California |
| 55 | John Lanthier | 15 | Son | — | California |
| 56 | Rosemary Lanthier | 12 | Daughter | — | California |
| 57 | Clarence Kiernan | 51 | Boarder | Electrician | California |
| 58 | Frank Poli | 27 | Head | Clerk | California |
| 59 | Audrey Poli | 27 | Wife | Cashier | California |
| 60 | Edith Cator | 76 | Head | — | Massachusetts |
| 61 | Emmy Peterson | 52 | Head | Waitress | Sweden |
| 62 | Samuel Peterson | 20 | Son | Repair | California |
| 63 | Mildred Peterson | 13 | Daughter | — | California |
| 64 | William Bowman | 56 | Head | Turbine Tender | Michigan |
| 65 | Phoebe Bowman | 68 | Wife | — | California |
| 66 | Raymond Rupprecht | 40 | Head | Printer | California |
| 67 | Beatrice Rupprecht | 39 | Wife | — | England |
| 68 | Donald Rupprecht | 12 | Son | — | California |
| 69 | Marian Rupprecht | 8 | Daughter | — | California |
| 70 | Edmund Luhring | 33 | Head | Display | Minnesota |
| 71 | Doris Luhring | 26 | Wife | — | California |
| 72 | Joyce Luhring | 9 | Daughter | — | California |
| 73 | Joan Luhring | 7 | Daughter | — | California |
| 74 | Amelia Verman | 77 | Head | — | Germany |
| 75 | Gerard Schissel | 56 | Son | Credit | France |
| 76 | Leo Schissel | 47 | Son | Carpenter | Colorado |
| 77 | John Burke | 41 | Head | Teamster | Washington |
| 78 | Harriet Burke | 34 | Wife | — | California |
| 79 | Jacqueline Burke | 13 | Daughter | — | California |
| 80 | Loraine Burke | 10 | 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)