MC
Mary Cassidy — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Suffolk, Massachusetts
Our Model Tree links this Mary Cassidy across the 1910, 1920 and 1930 US Censuses in Suffolk, Massachusetts (XGBoost, ~Confirmed) — first a spouse (b.~1869), then head of a 4-person household.
Age 61
b. ~1869
Female
Spouse
Born: Ireland
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Suffolk, Massachusetts |
| Surname | Cassidy |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 61 |
| Marital Status | Married |
| Birthplace | Ireland |
| Naturalization Status | Naturalized |
| Year of Immigration | 1887 |
| Age at First Marriage | 25 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Additional Details | |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
| Township / Ward | Boston |
| Est. Birth Year | ~1869 |
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.
4 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Thomas Cassidy | Head | — | 61 | ~1869 |
| Mary Cassidy | Other | — | 32 | ~1898 |
| Thomas Cassidy | Son | — | 25 | ~1905 |
| Mary Cassidy | Spouse | — | 61 | ~1869 |
Census Appearances
1910
Norfolk, Massachusetts
Spouse, age 40
Norfolk, Massachusetts · implied b. ~1870 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cassidy |
| Given Name | Mary Ann |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Ireland |
| Years Married | 21 |
| Children Born | 3 |
| Children Living | 2 |
| Year of Immigration | 1885 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Laundress |
| Industry | By the day |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | English |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1920
Norfolk, Massachusetts
Spouse, age 49
Norfolk, Massachusetts · implied b. ~1871 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cassidy |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 49 |
| Marital Status | Married |
| Birthplace | Ireland |
| Year of Immigration | 1888 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth Country | Ireland |
| Year of Naturalization | 1894 |
| Birthplace (normalized) | ireland |
1930
Suffolk, Massachusetts
Spouse, age 61
Suffolk, Massachusetts · implied b. ~1869 — 4 household members
| Surname | Cassidy |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 61 |
| Marital Status | Married |
| Birthplace | Ireland |
| Naturalization Status | Naturalized |
| Year of Immigration | 1887 |
| Age at First Marriage | 25 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read/Write | Yes |
| Mother Tongue | English |
| 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 Cassidy across 3 US Census years (1910, 1920 and 1930) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Cassidy
Spouse · 1930 · age 61 · b. ~1869 · Massachusetts
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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
49 people indexed on this census page (ia:1930:massachusettscensus00reel954:0806)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 52 | Margaret Butterworth | 24 | Dau | Clerk | Massachusetts |
| 53 | Mary Butterworth | 24 | Dau | Saleslady | Massachusetts |
| 54 | Ellen Butterworth | 36 | Dau | Typist | Massachusetts |
| 55 | Thomas Cassidy | 61 | Head | Helper | Ireland |
| 56 | Mary Cassidy THIS PERSON | 61 | Wife | — | Ireland |
| 57 | Mary Cassidy | 32 | Dau | — | Massachusetts |
| 58 | Thomas Cassidy | 25 | Son | — | Massachusetts |
| 59 | George A Studder | 24 | Head | Conductor | Massachusetts |
| 60 | Dorothy Studder | 23 | Wife | — | Massachusetts |
| 61 | George Jr Studder | 1 | Son | — | Massachusetts |
| 62 | Robert H Fuhrman | 30 | Head | Insurance | Massachusetts |
| 63 | Elizabeth Fuhrman | 26 | Wife | — | Massachusetts |
| 64 | Robert H Jr Fuhrman | 7 | Son | — | Massachusetts |
| 65 | Annie M Russell | None | Head | — | Massachusetts |
| 66 | Margaret M Russell | 40 | Dau | Saleslady | Massachusetts |
| 67 | Mary M Russell | 45 | Dau | — | Massachusetts |
| 68 | John F Bradley | 62 | Head | Customs | Massachusetts |
| 69 | Mary E Bradley | 60 | Wife | — | Massachusetts |
| 70 | Alfred Bradley | 29 | Son | — | Massachusetts |
| 71 | Walter Bradley | 24 | Son | — | Massachusetts |
| 72 | John Bradley | 27 | Son | — | Massachusetts |
| 73 | James Bradley | 22 | Son | — | Massachusetts |
| 74 | Matthew J Sullivan | 36 | Head | Truck Driver | Massachusetts |
| 75 | Margaret Sullivan | 32 | Wife | — | Massachusetts |
| 76 | Paul Sullivan | 5 | Son | — | Massachusetts |
| 77 | John J Norton | 47 | Head | — | Massachusetts |
| 78 | Mary Norton | 44 | Wife | — | Massachusetts |
| 79 | William A Mcdonald | 64 | Head | Salesman | Massachusetts |
| 80 | Mary E Mcdonald | 55 | Wife | — | Ireland |
| 81 | Bertha Mcdonald | 22 | Dau | — | Massachusetts |
| 82 | Alice Mcdonald | 20 | Dau | — | Massachusetts |
| 83 | Theresa Smalty | 49 | Boarder | Nurse | Massachusetts |
| 84 | William P Mcdonald | 26 | Son | — | Massachusetts |
| 85 | William Brooks | 45 | Head | Foreman | Massachusetts |
| 86 | Mary A Brooks | 45 | Wife | — | Ireland |
| 87 | Gertrude Brooks | 14 | Dau | — | Massachusetts |
| 88 | Mildred Brooks | 4 | Dau | — | Massachusetts |
| 89 | Robert Brooks | 5 | Nephew | — | Massachusetts |
| 90 | Cornelius Fitzgerald | 69 | Head | Foreman | Massachusetts |
| 91 | Annie Fitzgerald | 65 | Wife | — | Massachusetts |
| 92 | David J Fahey | 30 | Head | Conductor | Massachusetts |
| 93 | Mary A Fahey | 29 | Wife | — | Ireland |
| 94 | Ruth E Fahey | 4 | Dau | — | Massachusetts |
| 95 | David J Jr Fahey | 2 | Son | — | Massachusetts |
| 96 | John Fahey | 0 | Son | — | Massachusetts |
| 97 | John J Scully | 35 | Head | — | Massachusetts |
| 98 | Mary J Scully | 29 | Wife | — | Ireland |
| 99 | John J Jr Scully | 2 | Son | — | Massachusetts |
| 100 | Margaret Scully | 0 | Dau | — | 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)