MP
Mary Preston — 1930 US Census Record
Linked across censuses1930 United States Federal Census · San Francisco, California
Our Model Tree links this Mary Preston across the 1930 and 1940 US Censuses in San Francisco, California (XGBoost, ~Confirmed) — first a daughter (b.~1912), then head of a 13-person household.
Age 18
b. ~1912
Female
Daughter
Born: California
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | San Francisco, California |
| Surname | Preston |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | England |
| Mother's Birthplace | England |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
| Township / Ward | San Francisco |
| Est. Birth Year | ~1912 |
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.
13 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Charles Preston | Son | — | 6 | ~1924 |
| Arthur Preston | Son | — | 4 | ~1926 |
| Mary Preston | Daughter | — | 18 | ~1912 |
| Alice Preston | Daughter | — | 14 | ~1916 |
| Walter Preston | Son | — | 16 | ~1914 |
| Sarah Preston | Spouse | — | 48 | ~1882 |
| Albert Preston | Son | — | 2 | ~1928 |
| Frank Preston | Son | — | 10 | ~1920 |
| George Preston | Son | — | 12 | ~1918 |
| Fred Preston | Son | — | 8 | ~1922 |
| Edward Preston | Son | — | 20 | ~1910 |
| Edward Preston | Head | — | 52 | ~1878 |
| Mary Preston | Daughter | — | ~1930 |
Census Appearances
1930
San Francisco, …
Daughter, age 18
San Francisco, California · implied b. ~1912 — 13 household members
| Surname | Preston |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | England |
| Mother's Birthplace | England |
| Can Read/Write | Yes |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1940
San-Francisco-County, California
Head, age 28
San-Francisco-County, California · implied b. ~1912
●
Primary link
· ~Confirmed · 1 source
XGBoost
| Surname | Preston |
| Given Name | Margaret |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 28 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | San Francisco |
| 1935 Residence (County) | San Francisco |
| Occupation | seamstress |
| Industry | up to sewing Project |
| Class of Worker | GW |
| Hours Worked | 33 |
| Income (1939) | 572 |
| Highest Grade | No 8 |
| 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 Preston across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Preston
Daughter · 1930 · age 18 · b. ~1912 · California
★ You are viewing this record
Sibling
Alice Preston
Sibling · 1930 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Frank Preston
Sibling · 1930 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Preston
Sibling · 1930 · age
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Arthur Preston
Sibling · 1930 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edward Preston
Sibling · 1930 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Fred Preston
Sibling · 1930 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Charles Preston
Sibling · 1930 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
George Preston
Sibling · 1930 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Albert Preston
Sibling · 1930 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Walter Preston
Sibling · 1930 · age 16
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
1930 US Federal Census — San Francisco, California
Open full size
1930 US Federal Census — San Francisco, California
Page Contents
50 people indexed on this census page (ia:1930:californiacensus00reel211:0242)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Everett L Woods | 34 | Head | Salesman | California |
| 2 | Ethel M Woods | 33 | Wife | — | California |
| 3 | Everett L Jr Woods | 7 | Son | — | California |
| 4 | Robert M Woods | 4 | Son | — | California |
| 5 | John Jordan | 45 | Head | Laborer | Ireland |
| 6 | Mary Jordan | 42 | Wife | — | Ireland |
| 7 | John Jordan | 18 | Son | Laborer | California |
| 8 | Mary Jordan | 16 | Daughter | — | California |
| 9 | Catherine Jordan | 14 | Daughter | — | California |
| 10 | Alice Jordan | 12 | Daughter | — | California |
| 11 | James Jordan | 10 | Son | — | California |
| 12 | Thomas Jordan | 8 | Son | — | California |
| 13 | Margaret Jordan | 6 | Daughter | — | California |
| 14 | Joseph Jordan | 4 | Son | — | California |
| 15 | Agnes Jordan | 2 | Daughter | — | California |
| 16 | Theresa Jordan | 0 | Daughter | — | California |
| 17 | Edward Robinson | 48 | Head | Laborer | England |
| 18 | Emma Robinson | 46 | Wife | — | Germany |
| 19 | Edward Jr Robinson | 21 | Son | Laborer | California |
| 20 | Emma Robinson | 19 | Daughter | — | California |
| 21 | William Robinson | 17 | Son | — | California |
| 22 | George Robinson | 15 | Son | — | California |
| 23 | Alice Robinson | 13 | Daughter | — | California |
| 24 | Frank Robinson | 11 | Son | — | California |
| 25 | Fred Robinson | 9 | Son | — | California |
| 26 | Charles Robinson | 7 | Son | — | California |
| 27 | Arthur Robinson | 5 | Son | — | California |
| 28 | Albert Robinson | 3 | Son | — | California |
| 29 | Mary Robinson | 1 | Daughter | — | California |
| 30 | Ruth Robinson | 0 | Daughter | — | California |
| 31 | Edward Preston | 52 | Head | Laborer | England |
| 32 | Sarah Preston | 48 | Wife | — | England |
| 33 | Edward Jr Preston | 20 | Son | Laborer | California |
| 34 | Mary Preston THIS PERSON | 18 | Daughter | — | California |
| 35 | Walter Preston | 16 | Son | — | California |
| 36 | Alice Preston | 14 | Daughter | — | California |
| 37 | George Preston | 12 | Son | — | California |
| 38 | Frank Preston | 10 | Son | — | California |
| 39 | Fred Preston | 8 | Son | — | California |
| 40 | Charles Preston | 6 | Son | — | California |
| 41 | Arthur Preston | 4 | Son | — | California |
| 42 | Albert Preston | 2 | Son | — | California |
| 43 | Mary Preston | 0 | Daughter | — | California |
| 44 | George Joyce | 60 | Head | Laborer | Ireland |
| 45 | Catherine Joyce | 58 | Wife | — | Ireland |
| 46 | George Jr Joyce | 28 | Son | Laborer | California |
| 47 | Mary Joyce | 26 | Daughter | — | California |
| 48 | Alice Joyce | 24 | Daughter | — | California |
| 49 | Elizabeth Joyce | 22 | Daughter | — | California |
| 50 | Thomas Joyce | 20 | Son | Laborer | California |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1930 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)