MC
Mary Cronin — 1930 US Census Record
Linked across censuses1930 United States Federal Census · San Francisco, California
Our Model Tree links this Mary Cronin across the 1920, 1930 and 1940 US Censuses in San Francisco, California (XGBoost, ~Confirmed) — first a spouse (b.~1888), then head of a 7-person household.
Age 42
b. ~1888
Female
Spouse
Born: Ireland
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | San Francisco, California |
| Surname | Cronin |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 42 |
| Marital Status | Married |
| Birthplace | Ireland |
| Naturalization Status | Naturalized |
| Year of Immigration | 1910 |
| Age at First Marriage | 24 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | E. Ireland |
| Additional Details | |
| Can Read/Write | Yes |
| Mother Tongue | Gaelic |
| Veteran | No |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
| Township / Ward | City San Francisco |
| Est. Birth Year | ~1888 |
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.
7 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Jerry Cronin | Head | — | 43 | ~1887 |
| John Cronin | Son | — | 15 | ~1915 |
| Betty Cronin | Daughter | — | 7 | ~1923 |
| Hannah Cronin | Daughter | — | 12 | ~1918 |
| Joan Cronin | Daughter | — | 11 | ~1919 |
| Mary Cronin | Spouse | — | 42 | ~1888 |
| Gladys Cronin | Daughter | — | 6 | ~1924 |
Census Appearances
1920
San Francisco, …
Spouse, age 33
San Francisco, California · implied b. ~1887 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cronan |
| Given Name | Mary E. |
| Relationship to Head | wife |
| Sex | F |
| Color / Race | White |
| Age | 33 |
| Marital Status | Married |
| Birthplace | Ireland |
| Year of Immigration | 1911 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth Country | Ireland |
| Year of Naturalization | 1912 |
| Birthplace (normalized) | ireland |
1930
San Francisco, …
Spouse, age 42
San Francisco, California · implied b. ~1888 — 7 household members
| Surname | Cronin |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 42 |
| Marital Status | Married |
| Birthplace | Ireland |
| Naturalization Status | Naturalized |
| Year of Immigration | 1910 |
| Age at First Marriage | 24 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | E. Ireland |
| Can Read/Write | Yes |
| Mother Tongue | Gaelic |
| Veteran | No |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1940
San-Francisco-County, California
Other, age 51
San-Francisco-County, California · implied b. ~1889 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cronan |
| Given Name | Mary |
| Relationship to Head | Maid |
| Sex | F |
| Color / Race | White |
| Age | 51 |
| Marital Status | Single |
| Birthplace | Ireland |
| 1935 Residence (City) | San Francisco |
| 1935 Residence (County) | San Francisco |
| Naturalization Status | Naturalized |
| Occupation | Maid |
| Industry | Pvt. Home |
| Class of Worker | PW |
| Hours Worked | 50 |
| Income (1939) | 840 |
| Highest Grade | No 8 |
| 1935 Residence | Same house |
| 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 Cronin 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 Cronin
Spouse · 1930 · age 42 · b. ~1888 · 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:californiacensus00reel196:0104)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Jerry Cronin | 43 | Head | Laborer | Ireland |
| 52 | Mary Cronin THIS PERSON | 42 | Wife | — | Ireland |
| 53 | John Cronin | 15 | Son | — | California |
| 54 | Hannah Cronin | 12 | Daughter | — | California |
| 55 | Joan Cronin | 11 | Daughter | — | California |
| 56 | Betty Cronin | 7 | Daughter | — | California |
| 57 | Gladys Cronin | 6 | Daughter | — | California |
| 58 | Thomasa Martinez | 45 | Head | — | Mexico |
| 59 | H. Park | 55 | Head | Electrician | California |
| 60 | Lillian Park | 55 | Wife | — | Virginia |
| 61 | Andrew Keely | 55 | Head | Laborer | Virginia |
| 62 | Susan Keely | 52 | Wife | — | Missouri |
| 63 | John Piccolo | 36 | Head | Relief Help | Italy |
| 64 | Mary Piccolo | 17 | Daughter | — | California |
| 65 | Bernadine Piccolo | 15 | Daughter | — | California |
| 66 | Joseph Piccolo | 12 | Son | — | California |
| 67 | Tobias Piccolo | 8 | Son | — | California |
| 68 | James Valentine | 33 | Head | Plasterer | Italy |
| 69 | Angeline Valentine | 27 | Wife | — | Australia |
| 70 | Josephine Valentine | 11 | Daughter | — | Australia |
| 71 | Vincent Valentine | 10 | Son | — | Australia |
| 72 | Reginald Yates | 40 | Head | Elec. Const. | Oregon |
| 73 | Sarah Yates | 40 | Wife | — | India |
| 74 | Anna Yates | 15 | Daughter | — | India |
| 75 | Thomas H. Quigley | 51 | Head | Plasterer | New York |
| 76 | Mary Mcdonough | 86 | Mother-in-law | — | Free State Ireland |
| 77 | Catherine Mcdonough | 53 | Wife | — | California |
| 78 | James Holden | 42 | Head | Sheet Painter | Irish Free State |
| 79 | Louise Holden | 33 | Wife | — | California |
| 80 | Bailey Holden | 10 | Son | — | California |
| 81 | Fred Holden | 8 | Son | — | California |
| 82 | Mary Holden | 3 | Daughter | — | California |
| 83 | Edward Lundberg | 34 | Head | Stevedore | Russia |
| 84 | Mary Lundberg | 30 | Wife | — | Turkey |
| 85 | Caroline Lundberg | 6 | Daughter | — | California |
| 86 | Edward Lundberg | 5 | Son | — | California |
| 87 | William Lundberg | 2 | Son | — | California |
| 88 | Lundberg | None | — | — | — |
| 89 | John Sacco | 33 | Head | Fruit Peddler | Italy |
| 90 | Rose Sacco | 23 | Wife | Housekeeper | Alabama |
| 91 | Sacco | None | — | — | — |
| 92 | Dante Cassini | 40 | Head | — | Italy |
| 93 | Mary Cassini | 37 | Wife | — | Italy |
| 94 | Dorothy Cassini | 4 | Daughter | — | California |
| 95 | Louis Robba | 35 | Head | Cement Finisher | Italy |
| 96 | Giuseppina Robba | 32 | Wife | — | Italy |
| 97 | Luigi Robba | 9 | Son | — | California |
| 98 | Angelo Robba | 4 | Son | — | California |
| 99 | — | None | — | — | — |
| 100 | — | None | — | — | — |
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)