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Mary Bradley — 1920 US Census Record
Linked across censuses1920 United States Federal Census · Middlesex, Massachusetts
Our Model Tree links this Mary Bradley across the 1900, 1910 and 1920 US Censuses in Middlesex, Massachusetts (XGBoost, ~Confirmed) — first a head (b.~1875), then head of a 5-person household.
Age 45
b. ~1875
Female
Head
Born: Ireland
Widowed
1920 Census Record Details
| Census Year | 1920 |
| Location | Middlesex, Massachusetts |
| Surname | Bradley |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 45 |
| Marital Status | Widowed |
| Birthplace | Ireland |
| Year of Immigration | 1890 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Additional Details | |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Irish |
| Home Owned/Rented | R |
| Birth Country | Ireland |
| Year of Naturalization | 1895 |
| Birthplace (normalized) | ireland |
| Township / Ward | Cambridge City |
| Est. Birth Year | ~1875 |
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.
5 people recorded at the same address in the 1920 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Margaret Bradley | Daughter | — | 16 | ~1904 |
| Julia Bradley | Daughter | — | 13 | ~1907 |
| Mary Bradley | Head | — | 45 | ~1875 |
| Denis Bradley | Son | — | 11 | ~1909 |
| Cornelius Bradley | Son | — | 20 | ~1900 |
Census Appearances
1900
Middlesex, Massachusetts
Other, age 25
Middlesex, Massachusetts · implied b. ~1875 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Bradley |
| Given Name | Mary |
| Relationship to Head | Servant |
| Sex | F |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Ireland |
| Birth Month | May |
| Birth Year | 1875 |
| Year of Immigration | 1894 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Servant |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1910
Middlesex, Massachusetts
Head, age 34
Middlesex, Massachusetts · implied b. ~1876 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Bradley |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 34 |
| Marital Status | Widowed |
| Birthplace | Ireland |
| Children Born | 4 |
| Children Living | 4 |
| Year of Immigration | 1891 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Laundress |
| Industry | Private family |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1920
Middlesex, Massachusetts
Head, age 45
Middlesex, Massachusetts · implied b. ~1875 — 5 household members
| Surname | Bradley |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 45 |
| Marital Status | Widowed |
| Birthplace | Ireland |
| Year of Immigration | 1890 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Irish |
| Home Owned/Rented | R |
| Birth Country | Ireland |
| Year of Naturalization | 1895 |
| 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 Bradley across 3 US Census years (1900, 1910 and 1920) in Middlesex, Massachusetts, using XGBoost record linkage.
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This person
Anchor record
Mary Bradley
Head · 1920 · age 45 · b. ~1875 · Massachusetts
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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 — Middlesex, Massachusetts
Open full size
1920 US Federal Census — Middlesex, Massachusetts
Page Contents
50 people indexed on this census page (ia:1920:14thcensusofpopu707unit:0620)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Frank Traddella | 36 | Head | Barber | Italy |
| 2 | Annette Traddella | 31 | Wife | — | Italy |
| 3 | Frank Traddella | 11 | Son | — | Massachusetts |
| 4 | Eleanor Traddella | 9 | Daughter | — | Massachusetts |
| 5 | Andrew Traddella | 7 | Son | — | Massachusetts |
| 6 | Antonetta Traddella | 5 | Daughter | — | Massachusetts |
| 7 | George Traddella | 1 | Son | — | Massachusetts |
| 8 | Mary Bradley THIS PERSON | 45 | Head | — | Ireland |
| 9 | Cornelius Bradley | 20 | Son | Pressman | Massachusetts |
| 10 | Margaret Bradley | 16 | Daughter | Machinist | Massachusetts |
| 11 | Julia Bradley | 13 | Daughter | Messenger | Massachusetts |
| 12 | Denis Bradley | 11 | Son | — | Massachusetts |
| 13 | John Flanigan | 42 | Head | Laborer | Ireland |
| 14 | Mary Flanigan | 40 | Wife | — | Ireland |
| 15 | Margaret Flanigan | 12 | Daughter | — | Massachusetts |
| 16 | Catherine Flanigan | 10 | Daughter | — | Massachusetts |
| 17 | Francis Flanigan | 6 | Daughter | — | Massachusetts |
| 18 | Gertrude Flanigan | 4 | Daughter | — | Massachusetts |
| 19 | John Flanigan | 2 | Son | — | Massachusetts |
| 20 | John Riley | 47 | Head | Laborer | Ireland |
| 21 | Nellie Riley | 47 | Wife | — | Ireland |
| 22 | Catherine Riley | 13 | Daughter | — | Massachusetts |
| 23 | Catherine Keefe | 45 | Head | Housework | Ireland |
| 24 | Mary Keefe | 11 | Daughter | — | Massachusetts |
| 25 | Julia Keefe | 9 | Daughter | — | Massachusetts |
| 26 | Julia Good | 85 | Mother | — | Ireland |
| 27 | Julia Good | 50 | Sister | — | Ireland |
| 28 | Michael Sweeney | 40 | Head | Laborer | Ireland |
| 29 | Mary Sweeney | 35 | Wife | Saleswoman | Ireland |
| 30 | Edward Sweeney | 13 | Son | — | Massachusetts |
| 31 | Helen Sweeney | 10 | Daughter | — | Massachusetts |
| 32 | Patrick Sweeney | 8 | Son | — | Massachusetts |
| 33 | John Dunn | 42 | Head | Teamster | Massachusetts |
| 34 | Mary Dunn | 36 | Wife | — | Canada |
| 35 | Thomas Dunn | 16 | Son | Laborer | Massachusetts |
| 36 | Mary Dunn | 15 | Daughter | Operator | Massachusetts |
| 37 | John Dunn | 13 | Son | — | Massachusetts |
| 38 | Joseph Dunn | 11 | Son | — | Massachusetts |
| 39 | Helen Dunn | 4 | Daughter | — | Massachusetts |
| 40 | John Dunn | 53 | Head | Teamster | England |
| 41 | Mary Dunn | 53 | Wife | — | Ireland |
| 42 | John Dunn | 33 | Head | Roofer | Massachusetts |
| 43 | Margaret Dunn | 32 | Wife | Dressmaker | Ireland |
| 44 | Margaret Dunn | 7 | Daughter | — | Massachusetts |
| 45 | Catherine Dunn | 5 | Daughter | — | Massachusetts |
| 46 | John Dunn | 3 | Son | — | Massachusetts |
| 47 | William Dunn | 1 | Son | — | Massachusetts |
| 48 | John Dunn | 61 | Head | Laborer | Ireland |
| 49 | Mary Dunn | 60 | Wife | — | Ireland |
| 50 | John Dunn | 25 | Son | Laborer | Massachusetts |
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)