WQ
William Quinn — 1940 US Census Record
Model Tree available1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this William Quinn across the 1920, 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed), with identified parents Eleanor & Robert — first a head (b.~1903), then head of a 3-person household.
Age 37
b. ~1903
Male
Head
Born: Massachusetts
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | Quinn |
| Given Name | William |
| Relationship to Head | head |
| Sex | M |
| Color / Race | White |
| Age | 37 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| 1935 Residence (County) | MIDDLESEX |
| Additional Details | |
| Occupation | 42 |
| Industry | Police officer |
| Class of Worker | Police Dept. |
| Highest Grade | H 4 |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | 42 |
| Township / Ward | Somerville City |
| Est. Birth Year | ~1903 |
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 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| William Quinn | Head | — | 37 | ~1903 |
| William Quinn | Son | — | 1 | ~1939 |
| Isabell Quinn | Spouse | — | 33 | ~1907 |
Census Appearances
1920
Middlesex, Massachusetts
Son, age 17
Middlesex, Massachusetts · implied b. ~1903 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Quinn |
| Given Name | William P. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Middlesex, Massachusetts
Head, age 27
Middlesex, Massachusetts · implied b. ~1903 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Quinn |
| Given Name | William R |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 27 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| Age at First Marriage | 27 |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Occupation | Plumber |
| Industry | Plumbing Shop |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 35.00 |
| Veteran | No |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Middlesex-County, Massachusetts
Head, age 37
Middlesex-County, Massachusetts · implied b. ~1903 — 3 household members
| Surname | Quinn |
| Given Name | William |
| Relationship to Head | head |
| Sex | M |
| Color / Race | White |
| Age | 37 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| 1935 Residence (County) | MIDDLESEX |
| Occupation | 42 |
| Industry | Police officer |
| Class of Worker | Police Dept. |
| Highest Grade | H 4 |
| 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 Quinn across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Eleanor Quinn (~0.92 confidence) and father Robert Quinn (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Eleanor Quinn
b. ~1870
Source mother
● Household
· direct · ~0.92
Father
Robert Quinn
b. ~1870
Source father
● Household
· direct · ~0.92
This person
Anchor record
William Quinn
Head · 1940 · age 37 · b. ~1903 · Massachusetts
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Middlesex-County, Massachusetts
Open full size
1940 US Federal Census — Middlesex-County, Massachusetts
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-01705-00560)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Marilyn Miles | 3 | daughter | — | Massachusetts |
| 42 | Robert Mackenzie | 57 | head | Steel Polisher | Scotland |
| 43 | Lillian Mackenzie | 40 | wife | — | Massachusetts |
| 44 | Edward Riley | 42 | head | 40 | Massachusetts |
| 45 | Catherine Riley | 41 | wife | — | Massachusetts |
| 46 | Edward Riley | 18 | son | — | Massachusetts |
| 47 | John Riley | 16 | son | — | Massachusetts |
| 48 | Mary E. Riley | 12 | daughter | — | Massachusetts |
| 49 | Orrin Bradbury | 31 | head | 51 | Maine |
| 50 | Marian Bradbury | 38 | wife | — | Massachusetts |
| 51 | John Sullivan | 46 | head | 40 | Massachusetts |
| 52 | Helen Sullivan | 36 | wife | — | Maine |
| 53 | Charles Fox | 39 | head | 40 | Massachusetts |
| 54 | Lalah Fox | 36 | wife | — | Massachusetts |
| 55 | Myrtle Hamilton | 30 | head | — | Canada English |
| 56 | Joan Hamilton | 5 | daughter | — | Massachusetts |
| 57 | Charles Mcelroy | 70 | head | — | Massachusetts |
| 58 | Catherine Mcelroy | 70 | wife | — | Eire |
| 59 | William Hause | 60 | head | Repair Man | Canada English |
| 60 | Eva Hause | 59 | wife | — | Canada English |
| 61 | Doris Coyne | 36 | wife-less | — | Massachusetts |
| 62 | Gertrude Marshall | 40 | head | 30 | Massachusetts |
| 63 | Martha Dugmore | 67 | head | — | Canada English |
| 64 | Ethel Dugmore | 37 | daughter | 25 | Massachusetts |
| 65 | Arthur Mchaghin | 36 | head | 48 | Massachusetts |
| 66 | Ellen Mchaghin | 35 | wife | 40 | Massachusetts |
| 67 | Mary Pearce | 38 | head | 35 | Massachusetts |
| 68 | John Riley | 60 | head | Garage Worker | Eire |
| 69 | Ellen Riley | 60 | wife | — | Eire |
| 70 | Joan Riley | 25 | daughter | 40 | Massachusetts |
| 71 | Walter John Riley | 21 | son | 40 | Massachusetts |
| 72 | Wallace Graham | 34 | head | 48 | Massachusetts |
| 73 | Paula Graham | 32 | wife | — | Massachusetts |
| 74 | Bonnie Graham | 1 | daughter | — | Massachusetts |
| 75 | William Quinn THIS PERSON | 37 | head | 42 | Massachusetts |
| 76 | Isabell Quinn | 33 | wife | — | Massachusetts |
| 77 | William Quinn | 1 | son | — | Massachusetts |
| 78 | Everett Gibson | 44 | head | 43 | Massachusetts |
| 79 | Ellen Gibson | 40 | wife | — | Massachusetts |
Pedigree Summary
William
Gen 1 · 2 parents
~0.92
Max depth 4 (1900–1950 window)
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1940 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)