MR
Mary Regan — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Suffolk-County, Massachusetts
Our Model Tree links this Mary Regan across the 1920, 1930 and 1940 US Censuses in Suffolk-County, Massachusetts (XGBoost, ~Confirmed) — first a head (b.~1867), then head of a 6-person household.
Age 73
b. ~1867
Female
Head
Born: Ireland
Widowed
1940 Census Record Details
| Census Year | 1940 |
| Location | Suffolk-County, Massachusetts |
| Surname | Regan |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 73 |
| Marital Status | Widowed |
| Birthplace | Ireland |
| 1935 Residence (City) | Boston City |
| 1935 Residence (County) | Suffolk |
| Naturalization Status | Naturalized |
| Additional Details | |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
| Township / Ward | Boston City |
| Est. Birth Year | ~1867 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Patrick West | Other | — | 78 | ~1862 |
| Frances Regan | Daughter | — | 34 | ~1906 |
| Mary Regan | Head | — | 73 | ~1867 |
| Elizabeth West | Other | — | 60 | ~1880 |
| Helen West | Other | — | 58 | ~1882 |
| Joseph Regan | Son | — | 49 | ~1891 |
Census Appearances
1920
Suffolk, Massachusetts
Other, age 58
Suffolk, Massachusetts · implied b. ~1862 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Regan |
| Given Name | Mary |
| Relationship to Head | Servant |
| Sex | F |
| Color / Race | White |
| Age | 58 |
| Marital Status | Single |
| Birthplace | Ireland |
| Year of Immigration | 1883 |
| Naturalization Status | Alien |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Chambermaid |
| Industry | Hospital |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1930
Suffolk, Massachusetts
Head, age 63
Suffolk, Massachusetts · implied b. ~1867 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Regan |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 63 |
| Marital Status | Widowed |
| Birthplace | Ireland |
| Naturalization Status | Naturalized |
| Year of Immigration | 1882 |
| Age at First Marriage | 23 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | none |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 42 |
| Radio Set | R |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1940
Suffolk-County, Massachusetts
Head, age 73
Suffolk-County, Massachusetts · implied b. ~1867 — 6 household members
| Surname | Regan |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 73 |
| Marital Status | Widowed |
| Birthplace | Ireland |
| 1935 Residence (City) | Boston City |
| 1935 Residence (County) | Suffolk |
| Naturalization Status | Naturalized |
| Highest Grade | No 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 Regan 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 Regan
Head · 1940 · age 73 · b. ~1867 · Massachusetts
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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-t0627-01664-00538)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Mary G. Spellman | 34 | Daughter | Telephone Operator | Massachusetts |
| 2 | Bridget A. Donovan | 74 | Head | — | Eire |
| 3 | James A. Donovan | 44 | Son | School Teacher | Massachusetts |
| 4 | William Donovan | 35 | Son | Clerk | Massachusetts |
| 5 | Catherine M. Donovan | 33 | Daughter | Bank Clerk | Massachusetts |
| 6 | Mary Donovan | 31 | Daughter | Artist | Massachusetts |
| 7 | Katherine M. Morrissey | 72 | Sister | — | Eire |
| 8 | John F. Donovan | 35 | Nephew | Assistant Cashier | Massachusetts |
| 9 | Mary Regan THIS PERSON | 73 | Head | — | Ireland |
| 10 | Joseph Regan | 49 | Son | Line-Man | Massachusetts |
| 11 | Frances Regan | 34 | Daughter | Office Clerk | Massachusetts |
| 12 | Patrick West | 78 | Brother | — | Ireland |
| 13 | Elizabeth F. West | 60 | Sister | — | Ireland |
| 14 | Helen West | 58 | Sister | House Work | Ireland |
| 15 | Helen B. Mulcahy | 32 | Head | Telephone Operator | Massachusetts |
| 16 | Edward Mulcahy | 44 | Brother | Clerk | Massachusetts |
| 17 | Alden Calder | 71 | Head | — | Massachusetts |
| 18 | Frances Calder | 57 | Wife | — | Massachusetts |
| 19 | William J. Calder | 35 | Son | Laborer | Massachusetts |
| 20 | Gertrude Bennett | 33 | Daughter | — | Massachusetts |
| 21 | Richard Bennett | 40 | Son in law | Marine Engineer | Pennsylvania |
| 22 | Robert Bennett | 14 | Grandson | — | Massachusetts |
| 23 | Beverly Bennett | 8 | Granddaughter | — | Massachusetts |
| 24 | Daniel Kelly | 50 | Head | — | Ireland |
| 25 | Rose E. Kelly | 48 | Wife | — | England |
| 26 | Mary Iris Kelly | 17 | Daughter | — | England |
| 27 | Joan Kelly | 13 | Daughter | — | England |
| 28 | George Kelly | 12 | Son | — | England |
| 29 | John Kelly | 8 | Son | — | Massachusetts |
| 30 | Archie Samuelian | 48 | Head | — | Turkey |
| 31 | Emma Samuelian | 47 | Wife | — | Turkey |
| 32 | Grace Samuelian | 19 | Daughter | New Worker | Massachusetts |
| 33 | Son Samuelian | 17 | Son | Laborer | Massachusetts |
| 34 | Alice Samuelian | 15 | Daughter | — | Massachusetts |
| 35 | Edward Samuelian | 13 | Son | — | Massachusetts |
| 36 | Catherine Cunniff | 74 | Head | — | Massachusetts |
| 37 | John Cunniff | 41 | Son | Electrician | Massachusetts |
| 38 | Ruth Cunniff | 41 | Daughter in law | — | New Hampshire |
| 39 | John Cunniff | 11 | Grandson | — | Massachusetts |
| 40 | Jane Cunniff | 8 | Granddaughter | — | 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)