MJ
Mary Jackson — 1930 US Census Record
Linked across censuses1930 United States Federal Census · San Francisco, California
Our Model Tree links this Mary Jackson across the 1920, 1930 and 1940 US Censuses in San Francisco, California (XGBoost, ~Confirmed) — first a head (b.~1867), then head of a 12-person household.
Age 63
b. ~1867
Female
Head
Born: France
Widowed
1930 Census Record Details
| Census Year | 1930 |
| Location | San Francisco, California |
| Surname | Jackson |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 63 |
| Marital Status | Widowed |
| Birthplace | France |
| Naturalization Status | Naturalized |
| Year of Immigration | 1875 |
| Age at First Marriage | 18 |
| Father's Birthplace | France |
| Mother's Birthplace | France |
| Additional Details | |
| Can Read/Write | Yes |
| Mother Tongue | French |
| Home Owned/Rented | R |
| Home Value / Rent | 40 |
| Birth Country | France |
| Birthplace (normalized) | france |
| Township / Ward | San Francisco City |
| Est. Birth Year | ~1867 |
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.
12 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Jackson | Head | — | 63 | ~1867 |
| Delores Plummer | Other | — | 25 | ~1905 |
| John Hilton | Other | — | 56 | ~1874 |
| Jose Castellanos | Other | — | 26 | ~1904 |
| Stan Plummer | Other | — | 25 | ~1905 |
| Theodore Thurnell | Other | — | 22 | ~1908 |
| Maggie Warren | Other | — | 61 | ~1869 |
| Paul Pena | Other | — | 29 | ~1901 |
| John Alexandra | Other | — | 40 | ~1890 |
| John Jackson | Son | — | 63 | ~1867 |
| Marie Pena | Spouse | — | 27 | ~1903 |
| Catherine Thurnell | Spouse | — | 18 | ~1912 |
Census Appearances
1920
San Francisco, …
Other, age 54
San Francisco, California · implied b. ~1866 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jackson |
| Given Name | Mary |
| Relationship to Head | Servant |
| Sex | F |
| Color / Race | White |
| Age | 54 |
| Marital Status | Widowed |
| Birthplace | France |
| Year of Immigration | 1878 |
| Naturalization Status | Alien |
| Father's Birthplace | France |
| Mother's Birthplace | France |
| Occupation | Servant |
| Industry | Private Home |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | French |
| Birth Country | France |
| Birthplace (normalized) | france |
1930
San Francisco, …
Head, age 63
San Francisco, California · implied b. ~1867 — 12 household members
| Surname | Jackson |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 63 |
| Marital Status | Widowed |
| Birthplace | France |
| Naturalization Status | Naturalized |
| Year of Immigration | 1875 |
| Age at First Marriage | 18 |
| Father's Birthplace | France |
| Mother's Birthplace | France |
| Can Read/Write | Yes |
| Mother Tongue | French |
| Home Owned/Rented | R |
| Home Value / Rent | 40 |
| Birth Country | France |
| Birthplace (normalized) | france |
1940
San-Francisco-County, California
Spouse, age 74
San-Francisco-County, California · implied b. ~1866 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jackson |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 74 |
| Marital Status | Married |
| Birthplace | France |
| 1935 Residence (City) | San Francisco |
| 1935 Residence (County) | San Francisco |
| Naturalization Status | Naturalized |
| Highest Grade | No 8 |
| 1935 Residence | Same Place |
| Birth Country | France |
| Birthplace (normalized) | france |
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 Jackson 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 Jackson
Head · 1930 · age 63 · b. ~1867 · California
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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:californiacensus00reel204:0544)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Mary Jackson THIS PERSON | 63 | Head | — | France |
| 52 | John Jackson | 63 | Son | Painter | Finland |
| 53 | Maggie Warren | 61 | Lodger | Practical Nurse | United States |
| 54 | Stan Plummer | 25 | Lodger | Helper | United States |
| 55 | Delores Plummer | 25 | Lodger | Waitress | United States |
| 56 | Theodore Thurnell | 22 | Lodger | Road Layer | Germany |
| 57 | Catherine Thurnell | 18 | Wife | — | California |
| 58 | John Alexandra | 40 | Lodger | Clerk | England |
| 59 | Jose Castellanos | 26 | Lodger | Engineer | California |
| 60 | Paul Pena | 29 | Lodger | Steel Worker | Mexico |
| 61 | Marie Pena | 27 | Wife | Cannery Factory | Mexico |
| 62 | John Hilton | 56 | Lodger | Clerk | California |
| 63 | Charles Robinson | 68 | Head | Manager | Denmark |
| 64 | Bertha Robinson | 66 | Wife | — | Switzerland |
| 65 | Nelson Dunhort | 47 | Lodger | Carpenter | Iowa |
| 66 | Edward Oleyard | 50 | Lodger | Cabinet Maker | Germany |
| 67 | Harry Lloyd | 31 | Lodger | — | Scotland |
| 68 | Camilla Gammist | 20 | Lodger | Painter | Malta |
| 69 | Max Grayman | 55 | Lodger | Hand Man | United States |
| 70 | Charlie Miller | 55 | Lodger | Carpenter | United States |
| 71 | Marie Baker | 21 | Lodger | Waitress | Russia |
| 72 | Charles Vickers | 52 | Lodger | Salesman | Virginia |
| 73 | Clara Vickers | 35 | Wife | Maker | England |
| 74 | Charles Barker | 25 | Lodger | Washer | United States |
| 75 | Grace Barker | 22 | Wife | Sales Lady | United States |
| 76 | Olga Zurick | 28 | Lodger | Hair Dresser | United States |
| 77 | John Kiss | 67 | Lodger | Waiter | Poland |
| 78 | John Perry | 59 | Lodger | Painter | England |
| 79 | James Perry | 35 | Lodger | Painter | England |
| 80 | Edward Horwege | 42 | Head | Painter | California |
| 81 | Alice Horwege | 32 | Wife | Saleslady | California |
| 82 | Elise Horwege | 2 | Daughter | — | California |
| 83 | James Horwege | 0 | Son | — | California |
| 84 | Thomas Tettenby | 33 | Lodger | Teamster | California |
| 85 | Beatrice Tettenby | 31 | Wife | — | New York |
| 86 | John Kennedy | 65 | Lodger | — | United States |
| 87 | John Saunders | 42 | Lodger | Basket Weaver | Germany |
| 88 | John Brehan | 37 | Head | Elevator | Mississippi |
| 89 | Millie Brehan | 34 | Wife | — | Texas |
| 90 | Arlen Brehan | 12 | Daughter | — | Texas |
| 91 | Jack Brehan | 6 | Son | — | Texas |
| 92 | Paul Brehan | 5 | Son | — | California |
| 93 | Edward Collins | 70 | Lodger | — | Indiana |
| 94 | Carl W. Wolf | 34 | Lodger | Painter | Illinois |
| 95 | Albert Hughes | 47 | Head | Gardener | Wisconsin |
| 96 | Andrew Alexandra | 40 | Head | Manager | Russia |
| 97 | John L. Borach | 27 | Head | Clerk | Texas |
| 98 | Mamie Burnett | 35 | Lodger | Tailoress | Tennessee |
| 99 | David Linemore | 27 | Head | Barber | Missouri |
| 100 | Edna Linemore | 30 | Wife | — | New York |
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)