MC
Mary Clarke — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Bristol, Massachusetts
Our Model Tree links this Mary Clarke across the 1920 and 1930 US Censuses in Bristol, Massachusetts (XGBoost, ~Confirmed) — first a daughter (b.~1897), then head of a 6-person household.
Age 33
b. ~1897
Female
Daughter
Born: Azores
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Bristol, Massachusetts |
| Surname | Clarke |
| Given Name | Mary F |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 33 |
| Marital Status | Married |
| Birthplace | Azores |
| Naturalization Status | Alien |
| Year of Immigration | 1905 |
| Age at First Marriage | 25 |
| Father's Birthplace | Azores |
| Mother's Birthplace | Azores |
| Additional Details | |
| Occupation | Domestic |
| Industry | Home |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | Portuguese |
| Birth Country | Portugal |
| Birthplace (normalized) | azores |
| Occupation | Domestic |
| Township / Ward | Dartmouth Township Pt Of |
| 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.
6 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Ruth Ferreira | Daughter | — | 14 | ~1916 |
| Joaquim Ferreira | Head | — | 56 | ~1874 |
| Mary Clarke | Daughter | — | 33 | ~1897 |
| Mary Ferreira | Spouse | — | 55 | ~1875 |
| Naomi Ferreira | Daughter | — | 11 | ~1919 |
| Joseph Ferreira | Son | — | 19 | ~1911 |
Census Appearances
1920
Bristol, Massachusetts
Daughter, age 21
Bristol, Massachusetts · implied b. ~1899 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Clark |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Married |
| Birthplace | Azores |
| Year of Immigration | 1906 |
| Naturalization Status | Alien |
| Father's Birthplace | Azores |
| Mother's Birthplace | Azores |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Portuguese |
| Birth Country | Portugal |
| Birthplace (normalized) | azores |
1930
Bristol, Massachusetts
Daughter, age 33
Bristol, Massachusetts · implied b. ~1897 — 6 household members
| Surname | Clarke |
| Given Name | Mary F |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 33 |
| Marital Status | Married |
| Birthplace | Azores |
| Naturalization Status | Alien |
| Year of Immigration | 1905 |
| Age at First Marriage | 25 |
| Father's Birthplace | Azores |
| Mother's Birthplace | Azores |
| Occupation | Domestic |
| Industry | Home |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | Portuguese |
| Birth Country | Portugal |
| Birthplace (normalized) | azores |
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 Clarke across 2 US Census years (1920 and 1930) in Bristol, Massachusetts, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Clarke
Daughter · 1930 · age 33 · b. ~1897 · Massachusetts
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Sibling
Naomi Ferreira
Sibling · 1930 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Ferreira
Sibling · 1930 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ruth Ferreira
Sibling · 1930 · age 14
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 — Bristol, Massachusetts
Open full size
1930 US Federal Census — Bristol, Massachusetts
Page Contents
21 people indexed on this census page (ia:1930:massachusettscensus00reel886:0724)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Antone Medeiros | 56 | Head | — | Azores |
| 52 | Jessie Medeiros | 53 | Wife | — | Azores |
| 53 | John Medeiros | 25 | Son | Laborer | New York |
| 54 | Frank Medeiros | 35 | Head | Spinning Room | Azores |
| 55 | Mary Medeiros | 32 | Wife | Drawing Room | Azores |
| 56 | Evangeline Medeiros | 12 | Daughter | — | Massachusetts |
| 57 | Frank Jr Medeiros | 10 | Son | — | Massachusetts |
| 58 | John Medeiros | 9 | Son | — | Massachusetts |
| 59 | Joaquim Ferreira | 37 | Head | Electrician | Azores |
| 60 | Mary A Ferreira | 30 | Wife | — | Azores |
| 61 | Rachel Ferreira | 5 | Daughter | — | Massachusetts |
| 62 | Daniel J Ferreira | 3 | Son | — | Massachusetts |
| 63 | Joaquim Ferreira | 56 | Head | Shoe Cobbler | Azores |
| 64 | Mary C Ferreira | 55 | Wife | — | Azores |
| 65 | Joseph C Ferreira | 19 | Son | Laborer | Massachusetts |
| 66 | Ruth C Ferreira | 14 | Daughter | — | Massachusetts |
| 67 | Naomi Ferreira | 11 | Daughter | — | Massachusetts |
| 68 | Mary F Clarke THIS PERSON | 33 | Daughter | Domestic | Azores |
| 69 | Antone Moniz | 38 | Head | Mill Hand | Azores |
| 70 | Mary Moniz | 35 | Wife | Spinner Frames | Azores |
| 71 | Arthur Moniz | 13 | Son | — | Massachusetts |
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)