MC
Mary Coffey — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Suffolk, Massachusetts
Our Model Tree links this Mary Coffey across the 1930 and 1940 US Censuses in Suffolk, Massachusetts (XGBoost, ~Confirmed) — first a daughter (b.~1913), then head of a 8-person household.
Age 17
b. ~1913
Female
Daughter
Born: Massachusetts
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Suffolk, Massachusetts |
| Surname | Coffey |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | Irish Free State |
| Additional Details | |
| Occupation | Clerk |
| Industry | Department Store |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Clerk |
| Township / Ward | Boston City |
| Est. Birth Year | ~1913 |
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.
8 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Francis Coffey | Son | — | 13 | ~1917 |
| Jeremiah Coffey | Head | — | 49 | ~1881 |
| Beatrice Coffey | Spouse | — | 39 | ~1891 |
| Joseph Coffey | Son | — | 6 | ~1924 |
| Helen Coffey | Daughter | — | 10 | ~1920 |
| Margaret Coffey | Daughter | — | 19 | ~1911 |
| Mary Coffey | Daughter | — | 17 | ~1913 |
| Anna Coffey | Daughter | — | 21 | ~1909 |
Census Appearances
1930
Suffolk, Massachusetts
Daughter, age 17
Suffolk, Massachusetts · implied b. ~1913 — 8 household members
| Surname | Coffey |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | Irish Free State |
| Occupation | Clerk |
| Industry | Department Store |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Suffolk-County, Massachusetts
Daughter, age 28
Suffolk-County, Massachusetts · implied b. ~1912 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Coffey |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 28 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston City |
| 1935 Residence (County) | Suffolk |
| Occupation | Clerk |
| Industry | File Automobile Ag |
| Class of Worker | PW |
| Hours Worked | 37 |
| Income (1939) | 1100 |
| 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 Coffey across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Coffey
Daughter · 1930 · age 17 · b. ~1913 · Massachusetts
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Sibling
Joseph Coffey
Sibling · 1930 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Coffey
Sibling · 1930 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Francis Coffey
Sibling · 1930 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Helen Coffey
Sibling · 1930 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Anna Coffey
Sibling · 1930 · age 21
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 — Suffolk, Massachusetts
Open full size
1930 US Federal Census — Suffolk, Massachusetts
Page Contents
50 people indexed on this census page (ia:1930:massachusettscensus00reel948:1096)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | William Tollifson | 39 | Son-in-law | Waiter | Greece |
| 52 | Pauline Tollifson | 30 | Daughter | — | New York |
| 53 | Louis Flaherty | 54 | Head | Machinist | Pennsylvania |
| 54 | Mary Flaherty | 54 | Wife | — | Massachusetts |
| 55 | Frank Flaherty | 22 | Son | Telegrapher | Massachusetts |
| 56 | Louise Flaherty | 17 | Daughter | Telegraph Operator | Massachusetts |
| 57 | Arthur Flaherty | 15 | Son | — | Massachusetts |
| 58 | Nellie Collins | 45 | Sister-in-law | Chambermaid | Massachusetts |
| 59 | Janie Outing | 50 | Head | — | South Carolina |
| 60 | May Outing | 26 | Daughter | Laundress | South Carolina |
| 61 | Charlie Outing | 25 | Son | Chauffeur | South Carolina |
| 62 | Ollie Wallace | 22 | Daughter | Sorter | South Carolina |
| 63 | Calvin Wallace | 4 | Grandson | — | Massachusetts |
| 64 | Joseph Wallace | 2 | Grandson | — | Massachusetts |
| 65 | Elizabeth Wallace | 7 | Gr-daughter | — | Virginia |
| 66 | Melvin Wallace | 1 | Grandson | — | Massachusetts |
| 67 | Sadie Overton | 52 | Head | Housekeeper | New York |
| 68 | Edmonia Overton | 26 | Daughter | Presser | Pennsylvania |
| 69 | Charles Jones | 55 | Boarder | Laborer | Virginia |
| 70 | Mary White | 83 | Mother | — | Massachusetts |
| 71 | Carlton Cromwell | 6 | Grandson | — | Massachusetts |
| 72 | Benjamin Monteiro | 4 | Grandson | — | Massachusetts |
| 73 | Bertha Monteiro | 3 | Gr-daughter | — | Massachusetts |
| 74 | Peter Costa | 32 | Head | Laborer | Portugal |
| 75 | Paul Neves | 39 | Cousin | Laborer | Portugal |
| 76 | Peter Souza | 21 | Nephew | Laborer | Portugal |
| 77 | Frank Santiago | 24 | Boarder | Laborer | Portugal |
| 78 | George Lamkie | 74 | Head | — | Maine |
| 79 | James Lamkie | 35 | Son | Laborer | Massachusetts |
| 80 | William Cordan | 82 | Boarder | Laborer | Maryland |
| 81 | Jeremiah Coffey | 49 | Head | Clerk | Irish Free State |
| 82 | Beatrice Coffey | 39 | Wife | — | Irish Free State |
| 83 | Anna Coffey | 21 | Daughter | Waitress | Massachusetts |
| 84 | Margaret Coffey | 19 | Daughter | Waitress | Massachusetts |
| 85 | Mary Coffey THIS PERSON | 17 | Daughter | Clerk | Massachusetts |
| 86 | Francis Coffey | 13 | Son | — | Massachusetts |
| 87 | Helen Coffey | 10 | Daughter | — | Massachusetts |
| 88 | Joseph Coffey | 6 | Son | — | Massachusetts |
| 89 | Louis Hangis | 39 | Head | Shoemaker | Greece |
| 90 | Loretta Hangis | 39 | Wife | — | Massachusetts |
| 91 | Anna Hangis | 14 | Daughter | — | Massachusetts |
| 92 | Agnes Hangis | 12 | Daughter | — | Massachusetts |
| 93 | George Hangis | 8 | Son | — | Massachusetts |
| 94 | Joseph Hangis | 4 | Son | — | Massachusetts |
| 95 | Thomas Kelly | 54 | Boarder | — | Massachusetts |
| 96 | Louise Connors | 64 | Boarder | — | Massachusetts |
| 97 | Timothy Shannon | 39 | Head | Chauffeur | Massachusetts |
| 98 | Catherine Shannon | 24 | Wife | — | Massachusetts |
| 99 | Walter Shannon | 2 | Son | — | Massachusetts |
| 100 | Eleanor Shannon | 0 | Daughter | — | Massachusetts |
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)