MH
Mary Hamilton — 1930 US Census Record
Model Tree available1930 United States Federal Census · Berkshire, Massachusetts
Our Model Tree links this Mary Hamilton across the 1910, 1920 and 1930 US Censuses in Berkshire, Massachusetts (XGBoost, ~Confirmed), with identified parents James & James — first a daughter (b.~1909), then head of a 3-person household.
Age 21
b. ~1909
Female
Daughter
Born: Massachusetts
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Berkshire, Massachusetts |
| Surname | Hamilton |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Age at First Marriage | 21 |
| Father's Birthplace | New York |
| Mother's Birthplace | New York |
| Additional Details | |
| Occupation | Secretary |
| Industry | Office |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Secretary |
| Township / Ward | Pittsfield City |
| Est. Birth Year | ~1909 |
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 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Margaret Hamilton | Daughter | — | 18 | ~1912 |
| Mary Hamilton | Daughter | — | 21 | ~1909 |
| James Hamilton | Head | — | 25 | ~1905 |
Census Appearances
1910
Berkshire, Massachusetts
Daughter, age 1
Berkshire, Massachusetts · implied b. ~1909 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hamilton |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | New York |
| Mother's Birthplace | New York |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1920
Berkshire, Massachusetts
Daughter, age 10
Berkshire, Massachusetts · implied b. ~1910 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hamilton |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | New York |
| Mother's Birthplace | New York |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Berkshire, Massachusetts
Daughter, age 21
Berkshire, Massachusetts · implied b. ~1909 — 3 household members
| Surname | Hamilton |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Age at First Marriage | 21 |
| Father's Birthplace | New York |
| Mother's Birthplace | New York |
| Occupation | Secretary |
| Industry | Office |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
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 Hamilton across 3 US Census years (1910, 1920 and 1930) in Berkshire, Massachusetts, using XGBoost record linkage. Identified parents: father James Hamilton (~0.92 confidence) and father James Hamilton (~0.92 confidence) and mother Margaret Hamilton (~0.92 confidence) and father James Hamilton (~0.60 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.84
Father
James Hamilton
b. ~1881
Source father
● Household
· direct · ~0.92
Father
James Hamilton
b. ~1881
Source father
● Household
· direct · ~0.92
Mother
Margaret Hamilton
b. ~1882
Source mother
● Household
· direct · ~0.92
Father
James Hamilton
b. ~1905
Source father
● Household
· direct · ~0.6
This person
Anchor record
Mary Hamilton
Daughter · 1930 · age 21 · b. ~1909 · Massachusetts
★ You are viewing this record
Sibling
Margaret Hamilton
Sibling · 1930 · age 18
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 — Berkshire, Massachusetts
Open full size
1930 US Federal Census — Berkshire, Massachusetts
Page Contents
50 people indexed on this census page (ia:1930:massachusettscensus00reel885:0335)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | James Boyd Hamilton | 25 | Head | Postal Clerk | New York |
| 2 | Mary Hamilton THIS PERSON | 21 | Daughter | Secretary | Massachusetts |
| 3 | Margaret Hamilton | 18 | Daughter | — | Massachusetts |
| 4 | Michael Downes | 48 | Head | Assembler | England |
| 5 | Nellie Downes | 49 | Wife-H | — | Connecticut |
| 6 | Elizabeth Downes | 16 | Daughter | — | Connecticut |
| 7 | Joseph A. Lenny | 41 | Head | Assembler | Italy |
| 8 | Thelma Lenny | 43 | Wife-H | — | Canada-French |
| 9 | Paul Lenny | 15 | Son | — | Massachusetts |
| 10 | Anna Lamont | 36 | Sister-in-law | Bookkeeper | Canada-French |
| 11 | Italo De Angelis | 51 | Head | Text Man | Italy |
| 12 | Elizabeth De Angelis | 67 | Mother-in-law | — | Vermont |
| 13 | Ernest Picard | 30 | Head | Electric Welder | Rhode Island |
| 14 | Anna Picard | 29 | Wife-H | — | Vermont |
| 15 | Lorraine Picard | 1 | Daughter | — | Massachusetts |
| 16 | John J. Quinla | 53 | Head | Signalman | New York |
| 17 | Elizabeth Quinla | 48 | Wife-H | — | Massachusetts |
| 18 | Grace Quinla | 19 | Daughter | Stenographer | Massachusetts |
| 19 | William Quinla | 18 | Son | Office Helper | Massachusetts |
| 20 | John Quinla | 14 | Son | — | Massachusetts |
| 21 | Eleanor Quinla | 15 | Daughter | — | Massachusetts |
| 22 | Dorothy Quinla | 14 | Daughter | — | Massachusetts |
| 23 | Elizabeth Quinla | 11 | Daughter | — | Massachusetts |
| 24 | Eugene Quinla | 7 | Son | — | Massachusetts |
| 25 | Moses Minard | 43 | Head | Watchman | Vermont |
| 26 | Emma Minard | 40 | Wife-H | — | Vermont |
| 27 | Roland Minard | 21 | Son | Electric Welder | Vermont |
| 28 | Albert Minard | 17 | Son | — | Vermont |
| 29 | Gertrude Minard | 14 | Daughter | — | Vermont |
| 30 | Felix Biguard | 41 | Head | Laborer | Canada-French |
| 31 | Clara Biguard | 37 | Wife-H | — | Connecticut |
| 32 | Raymond Biguard | 19 | Son-adopted | Office Assistant | Vermont |
| 33 | Doris Biguard | 17 | Daughter-adopted | Errand Girl | Vermont |
| 34 | Clifford Biguard | 13 | Son | — | Massachusetts |
| 35 | August Sololy | 34 | Head | Machine Operator | Massachusetts |
| 36 | Alfred Sololy | 40 | Brother | Gardener | Germany |
| 37 | Pauline Sololy | 64 | Mother-H | — | Germany |
| 38 | Mary Sololy | 12 | Niece | — | Massachusetts |
| 39 | Charles Sololy | 13 | Nephew | — | Massachusetts |
| 40 | Charles J. Hughes | 43 | Head | Office Assistant | Massachusetts |
| 41 | Emma Hughes | 37 | Wife-H | — | Massachusetts |
| 42 | William Lavallee | 39 | Head | Commercial Artist | Vermont |
| 43 | Elizabeth Lavallee | 34 | Wife-H | — | Massachusetts |
| 44 | Gerard Lavallee | 7 | Son | — | Massachusetts |
| 45 | Daniel Keenan | 32 | Brother-in-law | Commercial Artist | Massachusetts |
| 46 | Margaret Tearney | 48 | Guest | Bookkeeper | Massachusetts |
| 47 | Matilda Borkowsky | 49 | Head-H | — | Poland |
| 48 | Lillian Borkowsky | 21 | Daughter | Twister | Massachusetts |
| 49 | Stacia Borkowsky | 20 | Daughter | Spinner | Massachusetts |
| 50 | Mary Borkowsky | 17 | Daughter | Twister | Massachusetts |
Pedigree Summary
Mary + 1 sibling
Gen 1 · 4 parents
~0.84
Max depth 4 (1900–1950 window)
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)