MC
Mary Coffey — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Suffolk-County, Massachusetts
Our Model Tree links this Mary Coffey across the 1920, 1930 and 1940 US Censuses in Suffolk-County, Massachusetts (XGBoost, ~Confirmed) — first a head (b.~1872), then head of a 2-person household.
Age 68
b. ~1872
Female
Head
Born: Ireland
Widowed
1940 Census Record Details
| Census Year | 1940 |
| Location | Suffolk-County, Massachusetts |
| Surname | Coffey |
| Given Name | Mary A. |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 68 |
| Marital Status | Widowed |
| Birthplace | Ireland |
| 1935 Residence (City) | Boston City |
| 1935 Residence (County) | Suffolk |
| Naturalization Status | Naturalized |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
| Township / Ward | Boston City |
| Est. Birth Year | ~1872 |
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.
2 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| William Coffey | Son | — | 34 | ~1906 |
| Mary Coffey | Head | — | 68 | ~1872 |
Census Appearances
1920
Suffolk, Massachusetts
Head, age 47
Suffolk, Massachusetts · implied b. ~1873 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Koffey |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 47 |
| Marital Status | Widowed |
| Birthplace | Ireland |
| Year of Immigration | 1890 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Tailor |
| Industry | Custom Tailor |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Home Owned/Rented | R |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1930
Suffolk, Massachusetts
Head, age 57
Suffolk, Massachusetts · implied b. ~1873 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Coffey |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 57 |
| Marital Status | Widowed |
| Birthplace | Ireland |
| Naturalization Status | Naturalized |
| Year of Immigration | 1888 |
| Age at First Marriage | 25 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Home Owned/Rented | O |
| Home Value / Rent | 2200 |
| Radio Set | R |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1940
Suffolk-County, Massachusetts
Head, age 68
Suffolk-County, Massachusetts · implied b. ~1872 — 2 household members
| Surname | Coffey |
| Given Name | Mary A. |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 68 |
| Marital Status | Widowed |
| Birthplace | Ireland |
| 1935 Residence (City) | Boston City |
| 1935 Residence (County) | Suffolk |
| Naturalization Status | Naturalized |
| Income (1939) | 0 |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
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 Coffey across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Coffey
Head · 1940 · age 68 · b. ~1872 · 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 — 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-t0627-01679-00253)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Robert Bradley | 63 | Head | Postal Clerk | Massachusetts |
| 42 | Patrick J. Bradley | 30 | Son | Instructor | Massachusetts |
| 43 | Catherine Bradley | 28 | Daughter | — | Massachusetts |
| 44 | Dorothy Bradley | 27 | Daughter | — | Massachusetts |
| 45 | Joseph Bradley | 27 | Son | — | Massachusetts |
| 46 | Isabel Grant | 52 | Sister | Collector | Massachusetts |
| 47 | William Connell | 23 | Nephew | New Worker | Massachusetts |
| 48 | Ruth C. Connell | 30 | Niece | Typist | Massachusetts |
| 49 | Mary Smith | 68 | Sister | — | Massachusetts |
| 50 | John J. Connors | 43 | Head | Cutter | Massachusetts |
| 51 | Nellie Connors | 43 | Wife | — | Massachusetts |
| 52 | John J. Jr. Connors | 13 | Son | — | Massachusetts |
| 53 | Thomas Hagan | 47 | Head | Cutter | Massachusetts |
| 54 | Catherine Hagan | 41 | Wife | — | Massachusetts |
| 55 | Mary Hagan | 16 | Daughter | — | Massachusetts |
| 56 | Thomas Hagan | 13 | Son | — | Massachusetts |
| 57 | Mary A. Coffey THIS PERSON | 68 | Head | — | Ireland |
| 58 | William J. Coffey | 34 | Son | Painter | Massachusetts |
| 59 | John Griffin | 34 | Head | Repairman | Massachusetts |
| 60 | Catherine Griffin | 32 | Wife | — | Ireland |
| 61 | Thomas Griffin | 6 | Son | — | Massachusetts |
| 62 | John Jr. Griffin | 4 | Son | — | Massachusetts |
| 63 | Francis Griffin | 2 | Son | — | Massachusetts |
| 64 | Paul Duff | 40 | Head | Receiver | Vermont |
| 65 | Mary Duff | 37 | Wife | — | England |
| 66 | Marilyn Duff | 12 | Daughter | — | Massachusetts |
| 67 | Paul Duff | 8 | Son | — | Massachusetts |
| 68 | Joseph Sylvester | 28 | Head | Stitcher | Philadelphia |
| 69 | Anna Sylvester | 28 | Wife | — | Massachusetts |
| 70 | Don J. Sylvester | 1 | Son | — | Massachusetts |
| 71 | Vincent Desimone | 54 | Head | Tailor | Italy |
| 72 | Annie Desimone | 50 | Wife | — | Italy |
| 73 | Vincent Jr. Desimone | 19 | Son | — | Massachusetts |
| 74 | Mary Desimone | 17 | Daughter | New Worker | Massachusetts |
| 75 | Ruth Desimone | 13 | Daughter | — | Massachusetts |
| 76 | Charles A. Chambers | 49 | Head | Green Keeper | Massachusetts |
| 77 | Agnes Chambers | 46 | Wife | — | Connecticut |
| 78 | George E. Meyers | 54 | Brother | Salesman | Germany |
| 79 | Arthur D. Anderson | 57 | Head | Chauffeur | Germany |
| 80 | Olga X. Anderson | 53 | Wife | — | Germany |
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)