WM
William Mahoney — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Middlesex, Massachusetts
Our Model Tree links this William Mahoney across the 1920 and 1930 US Censuses in Middlesex, Massachusetts (XGBoost, ~Confirmed) — first a son (b.~1912), then head of a 9-person household.
Age 18
b. ~1912
Male
Son
Born: Massachusetts
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Middlesex, Massachusetts |
| Surname | Mahoney |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Arlington Town Part Of |
| Est. Birth Year | ~1912 |
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.
9 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| William Mahoney | Son | — | 18 | ~1912 |
| Agnes Mahoney | Other | — | 40 | ~1890 |
| Agnes Mahoney | Daughter | — | 4 | ~1926 |
| Edmund Mahoney | Head | — | 42 | ~1888 |
| Edna Mahoney | Daughter | — | 17 | ~1913 |
| James Mahoney | Son | — | 13 | ~1917 |
| Gertrude Mahoney | Daughter | — | 15 | ~1915 |
| Edward Mahoney | Son | — | 2 | ~1928 |
| John Mahoney | Son | — | 11 | ~1919 |
Census Appearances
1920
Middlesex, Massachusetts
Son, age 7
Middlesex, Massachusetts · implied b. ~1913 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mahoney |
| Given Name | William E |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Middlesex, Massachusetts
Son, age 18
Middlesex, Massachusetts · implied b. ~1912 — 9 household members
| Surname | Mahoney |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Can Read/Write | Yes |
| 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 William Mahoney across 2 US Census years (1920 and 1930) in Middlesex, Massachusetts, using XGBoost record linkage.
Show:
This person
Anchor record
William Mahoney
Son · 1930 · age 18 · b. ~1912 · Massachusetts
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Sibling
Agnes Mahoney
Sibling · 1930 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Mahoney
Sibling · 1930 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edward Mahoney
Sibling · 1930 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edna Mahoney
Sibling · 1930 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Mahoney
Sibling · 1930 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Gertrude Mahoney
Sibling · 1930 · age 15
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 — Middlesex, Massachusetts
Open full size
1930 US Federal Census — Middlesex, Massachusetts
Page Contents
50 people indexed on this census page (ia:1930:massachusettscensus00reel914:0234)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Edmund M. Mahoney | 42 | Head | Gas Inspector | Massachusetts |
| 2 | Agnes M. Mahoney | 40 | Wife-H | — | Massachusetts |
| 3 | William Mahoney THIS PERSON | 18 | Son | — | Massachusetts |
| 4 | Edna Mahoney | 17 | Daughter | — | Massachusetts |
| 5 | Gertrude Mahoney | 15 | Daughter | — | Massachusetts |
| 6 | James Mahoney | 13 | Son | — | Massachusetts |
| 7 | John Mahoney | 11 | Son | — | Massachusetts |
| 8 | Agnes Mahoney | 4 | Daughter | — | Massachusetts |
| 9 | Edward Mahoney | 2 | Son | — | Massachusetts |
| 10 | Michael J. Shea | 52 | Head | Salesman | Massachusetts |
| 11 | Mary F. Shea | 39 | Wife-H | House Work | Massachusetts |
| 12 | Catherine Bennett | 38 | Sister in law | House Work | Massachusetts |
| 13 | Mary H. Cashman | 49 | Head-H | — | Irish Free State |
| 14 | Martin Cashman | 47 | Brother | Printer | Irish Free State |
| 15 | Jeremiah Cashman | 45 | Brother | Printer | Irish Free State |
| 16 | Mary Cashman | 43 | Sister in law | House Work | Massachusetts |
| 17 | Agnes M. Piet | 49 | Boarder | Assistant | Denmark |
| 18 | August A. Skogren | 40 | Head | Cutter | Sweden |
| 19 | Annie W. Skogren | 37 | Wife-H | — | Sweden |
| 20 | Stig A. Skogren | 14 | Son | — | Sweden |
| 21 | Joseph A. Baroni | 56 | Head | General Man | Italy |
| 22 | Mary Baroni | 58 | Wife-H | — | Italy |
| 23 | Samuel Vois | 35 | Boarder | Carpenter | Italy |
| 24 | Joseph Ratino | 30 | Lodger | Shoe Maker | Italy |
| 25 | William L. Kirk | 43 | Head | Claims Agent | Massachusetts |
| 26 | Mary S. Kirk | 41 | Wife-H | — | Massachusetts |
| 27 | William L. Kirk | 16 | Son | — | Massachusetts |
| 28 | Mary F. Kirk | 15 | Daughter | — | Massachusetts |
| 29 | Paul J. Kirk | 13 | Son | — | Massachusetts |
| 30 | Joseph Soares | 59 | Head | Cabinet Maker | Portugal |
| 31 | Mary Soares | 52 | Wife-H | — | Portugal |
| 32 | Mary J. Soares | 16 | Daughter | House Work | Massachusetts |
| 33 | Joseph Soares | 19 | Son | Upholsterer | Massachusetts |
| 34 | Mary Bent | 27 | Step daughter | Rubber Worker | Portugal |
| 35 | Ellen L. Clifford | 50 | Head-H | — | Canada English |
| 36 | Harold E. Hart | 25 | Head | Operator | Massachusetts |
| 37 | Evelyn C. Hart | 22 | Wife-H | Nurse | Massachusetts |
| 38 | Dora M. Shaw | 47 | Mother in law | Stitcher | Canada English |
| 39 | Joseph Kuchinsky | 47 | Head | Laborer | Russia |
| 40 | Mary Kuchinsky | 37 | Wife-H | — | Russia |
| 41 | Peter Kuchinsky | 17 | Son | Janitor | Russia |
| 42 | Henry Kuchinsky | 15 | Son | Helper | Massachusetts |
| 43 | Anna Kuchinsky | 12 | Daughter | — | Massachusetts |
| 44 | Walter Kuchinsky | 8 | Son | — | Massachusetts |
| 45 | Oscar Tunisian | 27 | Head | Butcher | Armenia |
| 46 | Rose Tunisian | 24 | Wife-H | — | Turkey in Asia |
| 47 | Peter O. Tunisian | 2 | Son | — | Massachusetts |
| 48 | Elsie Gostanian | 50 | Mother in law | House Work | Armenia |
| 49 | Steven Gostanian | 20 | Brother in law | Shoe Worker | Turkey in Asia |
| 50 | Manuel Manoukian | 47 | Head | Agent | Armenia |
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)