MQ
Mary Quinn — 1940 US Census Record
Model Tree available1940 United States Federal Census · Suffolk-County, Massachusetts
Our Model Tree links this Mary Quinn across the 1910, 1920, 1930 and 1940 US Censuses in Suffolk-County, Massachusetts (XGBoost, ~Confirmed), with identified parents James & James — first a daughter (b.~1908), then head of a 9-person household.
Age 32
b. ~1908
Female
Daughter
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Suffolk-County, Massachusetts |
| Surname | Quinn |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 32 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston City |
| 1935 Residence (County) | Suffolk |
| Additional Details | |
| Occupation | Clerk |
| Industry | Telephone |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1400 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Clerk |
| Township / Ward | Boston City |
| Est. Birth Year | ~1908 |
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 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Catherine Quinn | Daughter | — | 24 | ~1916 |
| Lucy Quinn | Daughter | — | 21 | ~1919 |
| Mary Quinn | Daughter | — | 32 | ~1908 |
| William Quinn | Head | — | 58 | ~1882 |
| Donald Quinn | Son | — | 15 | ~1925 |
| Frank Quinn | Son | — | 20 | ~1920 |
| Joseph Quinn | Son | — | 26 | ~1914 |
| Robert Quinn | Son | — | 17 | ~1923 |
| Mary Quinn | Spouse | — | 56 | ~1884 |
Census Appearances
1910
Suffolk, Massachusetts
Daughter, age 2
Suffolk, Massachusetts · implied b. ~1908 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Quinn |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1920
Suffolk, Massachusetts
Daughter, age 12
Suffolk, Massachusetts · implied b. ~1908 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Quinn |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| 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
Suffolk, Massachusetts
Daughter, age 21
Suffolk, Massachusetts · implied b. ~1909 — 11 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Quinn |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Occupation | Secretary |
| Industry | Public School |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Suffolk-County, Massachusetts
Daughter, age 32
Suffolk-County, Massachusetts · implied b. ~1908 — 9 household members
| Surname | Quinn |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 32 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston City |
| 1935 Residence (County) | Suffolk |
| Occupation | Clerk |
| Industry | Telephone |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1400 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| 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 Quinn across 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father James Quinn (~0.92 confidence) and father James Quinn (~0.92 confidence) and mother Catherine Quinn (~0.92 confidence) and father William Quinn (~0.92 confidence) and mother Mary Quinn (~0.92 confidence) and father James Fallon (~0.60 confidence). The pedigree spans 1 generation with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.87
Father
James Quinn
b. ~1863
Source father
● Household
· direct · ~0.92
Father
James Quinn
b. ~1870
Source father
● Household
· direct · ~0.92
Mother
Catherine Quinn
b. ~1881
Source mother
● Household
· direct · ~0.92
Father
William Quinn
b. ~1882
Source father
● Household
· direct · ~0.92
Mother
Mary Quinn
b. ~1884
Source mother
● Household
· direct · ~0.92
Father
James Fallon
b. ~1902
Source father
● Household
· direct · ~0.6
This person
Anchor record
Mary Quinn
Daughter · 1940 · age 32 · b. ~1908 · Massachusetts
★ You are viewing this record
Sibling
Frank Quinn
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Quinn
Sibling · 1940 · age 26
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Catherine Quinn
Sibling · 1940 · age 24
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Quinn
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lucy Quinn
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Donald Quinn
Sibling · 1940 · 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
1940 US Federal Census — Suffolk-County, Massachusetts
Open full size
1940 US Federal Census — Suffolk-County, Massachusetts
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01682-00497)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | William Kelley | 39 | Head | Clerk | Massachusetts |
| 42 | Viola Kelley | 40 | Wife | — | Canada-French |
| 43 | William J Kelley | 9 | Son | — | Ohio |
| 44 | Helen Kelley | 7 | Daughter | — | Rhode Island |
| 45 | Daniel Burns | 53 | Head | Policeman | Ireland |
| 46 | Mary Burns | 44 | Wife | — | Ireland |
| 47 | Mary Burns | 16 | Daughter | — | Massachusetts |
| 48 | Bartholomew Burns | 15 | Son | — | Massachusetts |
| 49 | Nora Burns | 13 | Daughter | — | Massachusetts |
| 50 | Helen Burns | 12 | Daughter | — | Massachusetts |
| 51 | Dorothy Burns | 9 | Daughter | — | Massachusetts |
| 52 | Daniel Burns | 8 | Son | — | Massachusetts |
| 53 | Veronica Burns | 7 | Daughter | — | Massachusetts |
| 54 | William Coughlin | 52 | Head | Carpenter | Canada-English |
| 55 | Regina Coughlin | 52 | Wife | — | Canada-English |
| 56 | Mary Coughlin | 23 | Daughter | — | Canada-English |
| 57 | William Coughlin | 17 | Son | — | Massachusetts |
| 58 | Gerald Coughlin | 11 | Son | — | Massachusetts |
| 59 | Joseph Mckinnon | 62 | Head | Police Captain | Canada-English |
| 60 | Margaret Mckinnon | 60 | Wife | — | Canada-English |
| 61 | Sarah Mckinnon | 32 | Daughter | Teacher | Massachusetts |
| 62 | Mark Mckinnon | 27 | Son | Salesman | Massachusetts |
| 63 | Mary Mckinnon | 24 | Daughter | Stenographer | Massachusetts |
| 64 | John Costello | 59 | Head | Flagman | New York |
| 65 | Catherine Costello | 58 | Wife | — | Ireland |
| 66 | Julia Costello | 21 | Daughter | Clerk | Massachusetts |
| 67 | John Costello | 20 | Son | — | Massachusetts |
| 68 | Helen Costello | 15 | Daughter | — | Massachusetts |
| 69 | Margaret Costello | 12 | Daughter | — | Massachusetts |
| 70 | William Quinn | 58 | Head | Painter | Massachusetts |
| 71 | Mary Quinn | 56 | Wife | — | Canada-English |
| 72 | Mary Quinn THIS PERSON | 32 | Daughter | Clerk | Massachusetts |
| 73 | Joseph Quinn | 26 | Son | Clerk | Massachusetts |
| 74 | Catherine Quinn | 24 | Daughter | Operator | Massachusetts |
| 75 | Lucy Quinn | 21 | Daughter | Clerk | Massachusetts |
| 76 | Frank Quinn | 20 | Son | New Worker | Massachusetts |
| 77 | Robert Quinn | 17 | Son | — | Massachusetts |
| 78 | Donald Quinn | 15 | Son | — | Massachusetts |
| 79 | John Cunningham | 52 | Head | Conductor | Massachusetts |
| 80 | Winifred Cunningham | 54 | Wife | — | New York |
Related Census Records
Pedigree Summary
Mary + 6 siblings
Gen 1 · 6 parents
~0.87
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)