ME
Mary Erickson — 1930 US Census Record
Linked across censuses1930 United States Federal Census · San Francisco, California
Our Model Tree links this Mary Erickson across the 1920, 1930 and 1940 US Censuses in San Francisco, California (XGBoost, ~Confirmed) — first a head (b.~1874), then head of a 4-person household.
Age 56
b. ~1874
Female
Head
Born: California
Widowed
1930 Census Record Details
| Census Year | 1930 |
| Location | San Francisco, California |
| Surname | Erickson |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 56 |
| Marital Status | Widowed |
| Birthplace | California |
| Age at First Marriage | 19 |
| Father's Birthplace | Free State Ireland |
| Mother's Birthplace | Free State Ireland |
| Additional Details | |
| Occupation | none |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 10,000 |
| Radio Set | R |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
| Township / Ward | San Francisco |
| Est. Birth Year | ~1874 |
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 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Thomas Mcdonough | Other | — | 48 | ~1882 |
| Mary Erickson | Head | — | 56 | ~1874 |
| Francis Erickson | Son | — | 36 | ~1894 |
| Francis Curry | Other | — | 27 | ~1903 |
Census Appearances
1920
San Francisco, …
Head, age 44
San Francisco, California · implied b. ~1876 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Erickson |
| Given Name | Mary |
| Relationship to Head | head |
| Sex | F |
| Color / Race | White |
| Age | 44 |
| Marital Status | Widowed |
| Birthplace | California |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | R |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1930
San Francisco, …
Head, age 56
San Francisco, California · implied b. ~1874 — 4 household members
| Surname | Erickson |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 56 |
| Marital Status | Widowed |
| Birthplace | California |
| Age at First Marriage | 19 |
| Father's Birthplace | Free State Ireland |
| Mother's Birthplace | Free State Ireland |
| Occupation | none |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 10,000 |
| Radio Set | R |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1940
San-Francisco-County, California
Other, age 66
San-Francisco-County, California · implied b. ~1874 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Erickson |
| Given Name | Mary J. |
| Relationship to Head | Mother |
| Sex | F |
| Color / Race | White |
| Age | 66 |
| Marital Status | Widowed |
| Birthplace | California |
| 1935 Residence (City) | San Francisco |
| 1935 Residence (County) | San Francisco |
| Industry | H |
| Class of Worker | 0 |
| 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 Erickson 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 Erickson
Head · 1930 · age 56 · b. ~1874 · 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:californiacensus00reel198:0485)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Edwin Miller | 50 | Head | Lithographer | New York |
| 52 | Georgia F. Miller | 51 | Wife | None | Kentucky |
| 53 | Walter J. Bartlett | 63 | Roomer | Lithographer | Iowa |
| 54 | Louis F. Thomain | 63 | Head | Body Polisher | France |
| 55 | Mary J. Thomain | 63 | Wife | None | Portugal |
| 56 | Jean F. Thomain | 30 | Son | Repairer | California |
| 57 | Evangeline F. Thomain | 21 | Daughter | Adjustment Dept | California |
| 58 | Laura J. Thomain | 19 | Daughter | Operator | California |
| 59 | Jessie E. Thomain | 17 | Daughter | None | California |
| 60 | Louis Thomain | 15 | Son | None | California |
| 61 | Alice F. Thomain | 8 | Daughter | None | California |
| 62 | Helen M. Thomain | 5 | Daughter | None | California |
| 63 | Hilda A. Bullock | 26 | Daughter | Filing | California |
| 64 | Lloyd A. Bullock | 4 | Grandson | None | California |
| 65 | Patricia R. Bullock | 3 | Granddaughter | None | California |
| 66 | John Fairgrieve | 57 | Head | Chauffeur | Scotland |
| 67 | Barbara Fairgrieve | 50 | Wife | None | California |
| 68 | Enola Fairgrieve | 20 | Daughter | None | California |
| 69 | Arthur Prendergast | 40 | Head | Editor | New Hampshire |
| 70 | Catherine Prendergast | 40 | Wife | None | New York |
| 71 | Curtis W. Prendergast | 14 | Son | None | California |
| 72 | Raymond E. Prendergast | 6 | Son | None | California |
| 73 | Clarence Christiansen | 57 | Head | None | South Dakota |
| 74 | Lillian M. Christiansen | 16 | Daughter | Teacher | California |
| 75 | Daisy E. Gray | 27 | Daughter | None | California |
| 76 | Richard P. Gray | 4 | Grandson | None | California |
| 77 | Lewis E. Lutz | 50 | Head | Manager | Pennsylvania |
| 78 | Elizabeth Lutz | 52 | Wife | None | Pennsylvania |
| 79 | Dorothy Lutz | 24 | Daughter | Tel & Telegraph | Pennsylvania |
| 80 | Lucy F. Lutz | 23 | Daughter | Stenographer | Pennsylvania |
| 81 | Guy F. Lutz | 19 | Son | None | Pennsylvania |
| 82 | John W. Gunnar | 51 | Head | Doctor | Nevada |
| 83 | Jennie M. Gunnar | 35 | Wife | None | Arizona |
| 84 | Clive E. Ross | 41 | Head | Salesman | New York |
| 85 | Ada F. Ross | 41 | Wife | None | New York |
| 86 | Jerry Ross | 13 | Son | None | Oregon |
| 87 | Burton W. Ross | 12 | Son | None | Oregon |
| 88 | Beatrice L. King | 17 | Lodger | None | Tennessee |
| 89 | Joseph G. Mcnamara | 42 | Head | Proprietor | California |
| 90 | Evelyn I. Mcnamara | 38 | Wife | None | California |
| 91 | Miles F. Brown | 41 | Head | Salesman | Wisconsin |
| 92 | Mary E. Brown | 31 | Wife | None | Wisconsin |
| 93 | Doris Litzman | 23 | Sister-law | Stenographer | Colorado |
| 94 | Helen Jenkins | 51 | Head | Proprietor | California |
| 95 | Marion Whitaker | 19 | Boarder | None | Iowa |
| 96 | Muriel M. Mccoskey | 26 | Neice | Lockbinder | California |
| 97 | Mary Erickson THIS PERSON | 56 | Head | None | California |
| 98 | Francis J. Erickson | 36 | Son | Accountant | California |
| 99 | Thomas Mcdonough | 48 | Lodger | Seaman | California |
| 100 | Francis W. Curry | 27 | Nephew | Body Builder | 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)