WB
William Brennan — 1920 US Census Record
Linked across censuses1920 United States Federal Census · Worcester, Massachusetts
Our Model Tree links this William Brennan across the 1910, 1920 and 1930 US Censuses in Worcester, Massachusetts (XGBoost, ~Confirmed) — first a head (b.~1860), then head of a 5-person household.
Age 60
b. ~1860
Male
Head
Born: Illinois
Married
1920 Census Record Details
| Census Year | 1920 |
| Location | Worcester, Massachusetts |
| Surname | Brennan |
| Given Name | William J. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 60 |
| Marital Status | Married |
| Birthplace | Illinois |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Additional Details | |
| Occupation | Machinist |
| Industry | Wire Mill |
| Class of Worker | W.C. |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth State | Illinois |
| Birth Country | United States |
| Year of Naturalization | R |
| Birthplace (normalized) | illinois |
| Occupation | Machinist |
| Township / Ward | Worcester City |
| Est. Birth Year | ~1860 |
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 William | Age | Birth yr |
|---|---|---|---|---|
| Walter Brennan | Son | — | 27 | ~1893 |
| Mary Brennan | Spouse | — | 60 | ~1860 |
| Thomas Brennan | Son | — | 19 | ~1901 |
| William Brennan | Head | — | 60 | ~1860 |
| John Brennan | Son | — | 32 | ~1888 |
Census Appearances
1910
Worcester, Massachusetts
Head, age 50
Worcester, Massachusetts · implied b. ~1860 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Brennan |
| Given Name | William J. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 50 |
| Marital Status | Married |
| Birthplace | Illinois |
| Years Married | 25 |
| Father's Birthplace | Ire English |
| Mother's Birthplace | Ire English |
| Occupation | Machinist |
| Industry | Machine Shop |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1920
Worcester, Massachusetts
Head, age 60
Worcester, Massachusetts · implied b. ~1860 — 5 household members
| Surname | Brennan |
| Given Name | William J. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 60 |
| Marital Status | Married |
| Birthplace | Illinois |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Machinist |
| Industry | Wire Mill |
| Class of Worker | W.C. |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth State | Illinois |
| Birth Country | United States |
| Year of Naturalization | R |
| Birthplace (normalized) | illinois |
1930
Worcester, Massachusetts
Other, age 71
Worcester, Massachusetts · implied b. ~1859 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Brennan |
| Given Name | William T. |
| Relationship to Head | father |
| Sex | M |
| Color / Race | White |
| Age | 71 |
| Marital Status | Widowed |
| Birthplace | Illinois |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | Irish Free State |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
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 William Brennan across 3 US Census years (1910, 1920 and 1930) in Worcester, Massachusetts, using XGBoost record linkage.
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This person
Anchor record
William Brennan
Head · 1920 · age 60 · b. ~1860 · 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 — Worcester, Massachusetts
Open full size
1920 US Federal Census — Worcester, Massachusetts
Page Contents
50 people indexed on this census page (ia:1920:14thcensusofpopu750unit:1140)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Jeremiah J. Moynihan | 55 | Head | Officer | Ireland |
| 2 | Katherine Moynihan | 45 | Wife | — | Pennsylvania |
| 3 | Joseph C. Moynihan | 19 | Son | — | Massachusetts |
| 4 | Deborah Moynihan | 18 | Daughter | — | Massachusetts |
| 5 | Anna Moynihan | 16 | Daughter | — | Massachusetts |
| 6 | James Moynihan | 9 | Son | — | Massachusetts |
| 7 | Maurice Cahill | 80 | Head | — | Ireland |
| 8 | Catherine Cahill | 72 | Wife | — | Massachusetts |
| 9 | Mary Cahill | 49 | Daughter | Clerk | Massachusetts |
| 10 | Patrick J. Regan | 74 | Head | Retired | Massachusetts |
| 11 | Ellen J. Regan | 72 | Wife | — | Ireland |
| 12 | Alice M. Regan | 49 | Daughter | — | Massachusetts |
| 13 | Mary E. Regan | 48 | Daughter | — | Massachusetts |
| 14 | William H. Regan | 43 | Head | Retail Merch. | Massachusetts |
| 15 | Anna G. Regan | 34 | Wife | — | Ireland |
| 16 | William H. Jr. Regan | 8 | Son | — | Massachusetts |
| 17 | Charles P. Regan | 6 | Son | — | Massachusetts |
| 18 | Edmund J. Regan | 3 | Son | — | Massachusetts |
| 19 | William J. Brennan THIS PERSON | 60 | Head | Machinist | Illinois |
| 20 | Mary Brennan | 60 | Wife | — | Massachusetts |
| 21 | John Brennan | 32 | Son | Officer | Massachusetts |
| 22 | Walter Brennan | 27 | Son | Bookkeeper | Massachusetts |
| 23 | Thomas Brennan | 19 | Son | — | Massachusetts |
| 24 | Thomas F. Burns | 48 | Head | Machinist | Massachusetts |
| 25 | Mary Burns | 36 | Wife | — | Massachusetts |
| 26 | James F. Burns | 7 | Son | — | Massachusetts |
| 27 | Thomas J. Burns | 5 | Son | — | Massachusetts |
| 28 | Katherine Burns | 42 | Sister | — | Massachusetts |
| 29 | Maude Burns | 27 | Niece | Envelope Worker | Massachusetts |
| 30 | Robert W. Nott | 42 | Head | Machinist | England |
| 31 | Ellen F. Nott | 37 | Wife | — | Massachusetts |
| 32 | John Dennison | 71 | Father-in-law | — | Ireland |
| 33 | Daniel Murphy | 41 | Head | Clerk | Massachusetts |
| 34 | Mary Murphy | 48 | Sister | — | Massachusetts |
| 35 | Margaret Murphy | 51 | Sister | Weaver | Massachusetts |
| 36 | Charles Nelson | 52 | Head | Foreman | Sweden |
| 37 | Louisa Nelson | 54 | Wife | — | Sweden |
| 38 | Edward Nelson | 17 | Son | — | Massachusetts |
| 39 | Arthur O. Nelson | 23 | Son | Agent | Massachusetts |
| 40 | Lillian Nelson | 20 | Daughter | Stenographer | Massachusetts |
| 41 | Carl O. Hellstrom | 59 | Head | Machinist | Sweden |
| 42 | Johanna Hellstrom | 65 | Wife | — | Sweden |
| 43 | Charles P. Hauck | 50 | Head | Machinist | Sweden |
| 44 | Bernhardina Hauck | 47 | Wife | — | Sweden |
| 45 | Florence V. Hauck | 24 | Daughter | Sign Designer | Massachusetts |
| 46 | Thomas Ward | 45 | Head | Carpenter | Ireland |
| 47 | Mary Ward | 50 | Wife | — | Ireland |
| 48 | Mary Ward | 18 | Daughter | — | Scotland |
| 49 | Elizabeth Ward | 13 | Daughter | — | Scotland |
| 50 | Florence Ward | 10 | Daughter | — | 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)