MH
Mary Hart — 1920 US Census Record
Linked across censuses1920 United States Federal Census · Marin, California
Our Model Tree links this Mary Hart across the 1920, 1930 and 1940 US Censuses in Marin, California (XGBoost, ~Confirmed) — first a spouse (b.~1897), then head of a 3-person household.
Age 23
b. ~1897
Female
Spouse
Born: France
Married
1920 Census Record Details
| Census Year | 1920 |
| Location | Marin, California |
| Surname | Hart |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 23 |
| Marital Status | Married |
| Birthplace | France |
| Year of Immigration | 1911 |
| Naturalization Status | Naturalized |
| Father's Birthplace | France |
| Mother's Birthplace | France |
| Additional Details | |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | French |
| Birth Country | France |
| Birthplace (normalized) | france |
| Township / Ward | San Rafael City |
| Est. Birth Year | ~1897 |
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.
3 people recorded at the same address in the 1920 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Bernadette Hart | Daughter | — | 1 | ~1919 |
| Mathias Hart | Head | — | 34 | ~1886 |
| Mary Hart | Spouse | — | 23 | ~1897 |
Census Appearances
1920
Marin, California
Spouse, age 23
Marin, California · implied b. ~1897 — 3 household members
| Surname | Hart |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 23 |
| Marital Status | Married |
| Birthplace | France |
| Year of Immigration | 1911 |
| Naturalization Status | Naturalized |
| Father's Birthplace | France |
| Mother's Birthplace | France |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | French |
| Birth Country | France |
| Birthplace (normalized) | france |
1930
Marin, California
Spouse, age 33
Marin, California · implied b. ~1897 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hart |
| Given Name | Marie |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 33 |
| Marital Status | Married |
| Birthplace | France |
| Naturalization Status | Naturalized |
| Year of Immigration | 1911 |
| Age at First Marriage | 17 |
| Father's Birthplace | France |
| Mother's Birthplace | France |
| Can Read/Write | Yes |
| Mother Tongue | French |
| Birth Country | France |
| Birthplace (normalized) | france |
1940
Marin-County, California
Spouse, age 43
Marin-County, California · implied b. ~1897 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hart |
| Given Name | Marie |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 43 |
| Marital Status | Married |
| Birthplace | France |
| 1935 Residence (City) | San Rafael |
| 1935 Residence (County) | Marin |
| Naturalization Status | Naturalized |
| Income (1939) | 0 |
| Highest Grade | No 6 |
| 1935 Residence | Same House |
| 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 Hart 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 Hart
Spouse · 1920 · age 23 · b. ~1897 · California
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1920 US Federal Census — Marin, California
Open full size
1920 US Federal Census — Marin, California
Page Contents
50 people indexed on this census page (ia:1920:14thcensusofpopu120unit:0908)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | William Lindley | 32 | Head | Conductor | California |
| 2 | Hazel Lindley | 33 | Wife | — | California |
| 3 | Lillian Lindley | 10 | Daughter | — | California |
| 4 | Madeline Lindley | 1 | Daughter | — | California |
| 5 | Herbert Lindley | 0 | Son | — | California |
| 6 | Irvin Dudley | 48 | Head | Salesman | California |
| 7 | Josephine Dudley | 31 | Wife | — | Ireland |
| 8 | Eldra Dudley | 14 | Daughter | — | California |
| 9 | Fing Lee | 28 | Servant | Ironer | China |
| 10 | Chew Lee | 33 | Servant | Laundryman | China |
| 11 | On Wing | 48 | Servant | Laundryman | China |
| 12 | Tim Hing Jack | 19 | Servant | Laundryman | China |
| 13 | Fung Lee | 41 | Servant | Laundryman | California |
| 14 | Ho Gong Jew | 56 | Servant | Laundryman | China |
| 15 | Lim Lee | 37 | Servant | Laundry | California |
| 16 | Oy Lee | 32 | Servant | Laundryman | China |
| 17 | Lee Ying | 63 | Head | Owner | China |
| 18 | Lin Fong | 57 | Servant | Laundryman | China |
| 19 | Wun Lee | 54 | Servant | Laundryman | China |
| 20 | Him Lee | 53 | Servant | Laundryman | China |
| 21 | Ying Lee | 49 | Servant | Laundryman | China |
| 22 | Heung Lee | 60 | Servant | Laundryman | China |
| 23 | Bom Chin Lee | 53 | Servant | Laundryman | China |
| 24 | Jung Lim | 57 | Servant | Laundryman | China |
| 25 | Fung Jr Quan | 40 | Servant | Laundryman | California |
| 26 | Cheong Lee | 55 | Head | Owner | China |
| 27 | Yut Lee | 52 | Servant | Laundryman | California |
| 28 | Goo Chin | 26 | Servant | Laundryman | China |
| 29 | Ton Lee | 54 | Servant | Laundryman | China |
| 30 | Now Hin Lee | 57 | Servant | Laundryman | China |
| 31 | Moy Lee | 24 | Servant | Laundryman | China |
| 32 | Jing Jung | 51 | Head | Merchant | China |
| 33 | Yee Wap | 47 | Partner | Merchant | China |
| 34 | Kim Wong | 42 | Partner | Merchant | China |
| 35 | Mathias Hart | 34 | Head | Carpenter | New Jersey |
| 36 | Mary Hart THIS PERSON | 23 | Wife | — | France |
| 37 | Bernadette Hart | 1 | Daughter | — | California |
| 38 | Richard A. Welsh | 46 | Head | Agent | Massachusetts |
| 39 | Mary E. Welsh | 45 | Wife | — | California |
| 40 | Evelyn B. Welsh | 15 | Daughter | — | California |
| 41 | Arthur W. Welsh | 13 | Son | Machinist | California |
| 42 | Laverne M. Welsh | 7 | Daughter | — | California |
| 43 | Martha Talyor | 72 | Mother-in-law | — | California |
| 44 | James Nute | 44 | Head | Electrician | California |
| 45 | Agnes Nute | 44 | Wife | — | California |
| 46 | Edith Nute | 12 | Daughter | — | California |
| 47 | Frank Noble | 30 | Head | Electrician | California |
| 48 | Margaret Noble | 38 | Wife | — | England |
| 49 | Richard J. Mcnamara | 19 | Step-son | Machinist | England |
| 50 | Jerry Mcnamara | 16 | Step-son | Delivery | California |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1920 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)