MQ
Mary Quigley — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this Mary Quigley across the 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed) — first a daughter (b.~1928), then head of a 7-person household.
Age 12
b. ~1928
Female
Daughter
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | Quigley |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Medford city |
| 1935 Residence (County) | Middlesex |
| Additional Details | |
| Highest Grade | S 8 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Medford City |
| Est. Birth Year | ~1928 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Ruth Quigley | Daughter | — | 7 | ~1933 |
| Patricia Quigley | Daughter | — | 2 | ~1938 |
| Alice Quigley | Spouse | — | 39 | ~1901 |
| Mary Quigley | Daughter | — | 12 | ~1928 |
| Edward Quigley | Head | — | 47 | ~1893 |
| Edward Quigley | Son | — | 3 | ~1937 |
| Lorraine Quigley | Daughter | — | 10 | ~1930 |
Census Appearances
1930
Middlesex, Massachusetts
Daughter, age 3
Middlesex, Massachusetts · implied b. ~1927 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Quigley |
| Given Name | Mary C. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Middlesex-County, Massachusetts
Daughter, age 12
Middlesex-County, Massachusetts · implied b. ~1928 — 7 household members
| Surname | Quigley |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Medford city |
| 1935 Residence (County) | Middlesex |
| Highest Grade | S 8 |
| 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 Quigley across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Quigley
Daughter · 1940 · age 12 · b. ~1928 · Massachusetts
★ You are viewing this record
Sibling
Lorraine Quigley
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Patricia Quigley
Sibling · 1940 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ruth Quigley
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edward Quigley
Sibling · 1940 · age 3
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 — 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-t0627-01611-00495)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Michael C Mckeighan | 53 | Head | Template Maker | Eire |
| 42 | Martha Mckeighan | 45 | Wife | — | Massachusetts |
| 43 | Dorothea M Mckeighan | 12 | Daughter | — | Massachusetts |
| 44 | Ray W Greenleaf | 61 | Head | Chief Yeoman | Maine |
| 45 | Nella B Greenleaf | 58 | Wife | — | Canada English |
| 46 | Edward L Quigley | 47 | Head | Assistant Superintendent | Massachusetts |
| 47 | Alice L Quigley | 39 | Wife | — | Maine |
| 48 | Mary Quigley THIS PERSON | 12 | Daughter | — | Massachusetts |
| 49 | Lorraine Quigley | 10 | Daughter | — | Massachusetts |
| 50 | Ruth Quigley | 7 | Daughter | — | Massachusetts |
| 51 | Edward Jr Quigley | 3 | Son | — | Massachusetts |
| 52 | Patricia Quigley | 2 | Daughter | — | Massachusetts |
| 53 | Wilfred Hurrant | 62 | Head | Carpenter | Canada English |
| 54 | Elizabeth Hurrant | 61 | Wife | — | Canada English |
| 55 | John X Hurrant | 27 | Son | Chauffeur | Massachusetts |
| 56 | Alfred Hurrant | 71 | Brother | Teamster | Canada English |
| 57 | Samuel Boyd | 69 | Lodger | — | Massachusetts |
| 58 | Clair White | 1 | Lodger | — | — |
| 59 | Jenny Laws | 63 | Head | — | Netherlands |
| 60 | Adrienne Laws | 43 | Daughter | Nurse | Massachusetts |
| 61 | Mary G Cadigan | 65 | Lodger | — | Massachusetts |
| 62 | John Mcgrath | 53 | Head | Steel Melter | Canada English |
| 63 | Eliza Jane Mcgrath | 50 | Wife | — | Massachusetts |
| 64 | John L Mcgrath | 18 | Son | Assembler | Massachusetts |
| 65 | James E Mcgrath | 15 | Son | — | Massachusetts |
| 66 | Thomas G Mcgrath | 13 | Son | — | Massachusetts |
| 67 | Eugene J Mcgrath | 10 | Son | — | Massachusetts |
| 68 | Alvin J Mcgrath | 9 | Son | — | Massachusetts |
| 69 | Louise Marchant | 72 | Mother-in-law | — | Canada English |
| 70 | Frederick W Boyle | 46 | Head | Bank Clerk | Canada English |
| 71 | Gertrude R Boyle | 38 | Wife | — | New Hampshire |
| 72 | Frederick R Boyle | 9 | Son | — | Massachusetts |
| 73 | Albert W Boyle | 4 | Son | — | Massachusetts |
| 75 | Harold J Macmillan | 41 | Head | Salesman | Massachusetts |
| 76 | Edith M Macmillan | 41 | Wife | — | Massachusetts |
| 77 | Albert J Macmillan | 16 | Son | — | Massachusetts |
| 78 | Jean Macmillan | 14 | Daughter | — | Massachusetts |
| 79 | Hugh M Mclain | 63 | Head | Maintenance Man | Canada English |
| 80 | Florence Mclain | 21 | Daughter | Stenographer | Massachusetts |
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)