MC
Mary Casey — 1930 US Census Record
Model Tree available1930 United States Federal Census · Middlesex, Massachusetts
Our Model Tree links this Mary Casey across the 1910, 1920 and 1930 US Censuses in Middlesex, Massachusetts (XGBoost, ~Confirmed), with identified parents Timothy & Mary — first a daughter (b.~1907), then head of a 7-person household.
Age 23
b. ~1907
Female
Daughter
Born: Massachusetts
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Middlesex, Massachusetts |
| Surname | Casey |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Additional Details | |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Arlington Town Part Of |
| Est. Birth Year | ~1907 |
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 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Casey | Daughter | — | 23 | ~1907 |
| Margaret Casey | Daughter | — | 19 | ~1911 |
| Alice Casey | Daughter | — | 17 | ~1913 |
| Helen Casey | Daughter | — | 21 | ~1909 |
| Timothy Casey | Head | — | 56 | ~1874 |
| Timothy Casey | Son | — | 25 | ~1905 |
| Mary Casey | Spouse | — | 53 | ~1877 |
Census Appearances
1910
Middlesex, Massachusetts
Daughter, age 4
Middlesex, Massachusetts · implied b. ~1906 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Casey |
| Given Name | Mary E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1920
Middlesex, Massachusetts
Daughter, age 13
Middlesex, Massachusetts · implied b. ~1907 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Casey |
| Given Name | Mary E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Middlesex, Massachusetts
Daughter, age 23
Middlesex, Massachusetts · implied b. ~1907 — 7 household members
| Surname | Casey |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Occupation | none |
| Can Read/Write | Yes |
| 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 Casey across 3 US Census years (1910, 1920 and 1930) in Middlesex, Massachusetts, using XGBoost record linkage. Identified parents: father Timothy Casey (~0.92 confidence) and mother Mary Casey (~0.92 confidence) and father James Casey (~0.92 confidence) and father James Casey (~0.92 confidence) and mother Jennie Casey (~0.92 confidence) and mother Agnes Casey (~0.92 confidence). The pedigree spans 1 generation with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Timothy Casey
b. ~1874
Source father
● Household
· direct · ~0.92
Mother
Mary Casey
b. ~1877
Source mother
● Household
· direct · ~0.92
Father
James Casey
b. ~1880
Source father
● Household
· direct · ~0.92
Father
James Casey
b. ~1880
Source father
● Household
· direct · ~0.92
Mother
Jennie Casey
b. ~1880
Source mother
● Household
· direct · ~0.92
Mother
Agnes Casey
b. ~1884
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Casey
Daughter · 1930 · age 23 · b. ~1907 · Massachusetts
★ You are viewing this record
Sibling
Timothy Casey
Sibling · 1930 · age 25
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Alice Casey
Sibling · 1930 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Helen Casey
Sibling · 1930 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Casey
Sibling · 1930 · age 19
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 — Middlesex, Massachusetts
Open full size
1930 US Federal Census — Middlesex, Massachusetts
Page Contents
50 people indexed on this census page (ia:1930:massachusettscensus00reel914:0161)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Riley Anderson | 61 | — | Mechanic | Canada French |
| 52 | Rose Anderson | 57 | Wife | None | Massachusetts |
| 53 | Ethel Anderson | 31 | Daughter | Clerk | Massachusetts |
| 54 | Alice Anderson | 25 | Daughter | Mechanic | Massachusetts |
| 55 | Ethel M Anderson | 21 | Daughter | None | Massachusetts |
| 56 | Hannah Crowley | 65 | Head | None | Massachusetts |
| 57 | Mary Crowley | 38 | Daughter | None | Massachusetts |
| 58 | Alice Crowley | 36 | Daughter | None | Massachusetts |
| 59 | Helen Crowley | 34 | Daughter | Dictator | Massachusetts |
| 60 | John J Casey | 38 | Head | Commercial Agent | New York |
| 61 | Helen V Casey | 38 | Wife | None | Massachusetts |
| 62 | John J Jr Casey | 1 | Son | None | Massachusetts |
| 63 | Mary Casey | 60 | Head | Draper | Massachusetts |
| 64 | Mary Casey | 30 | Daughter | None | Massachusetts |
| 65 | Helen Casey | 28 | Daughter | Cashier | Massachusetts |
| 66 | Alice Casey | 26 | Daughter | None | Massachusetts |
| 67 | Margaret Casey | 24 | Daughter | None | Massachusetts |
| 68 | James Casey | 35 | Head | Barber | Massachusetts |
| 69 | Mary Casey | 32 | Wife | None | Massachusetts |
| 70 | James Jr Casey | 5 | Son | None | Massachusetts |
| 71 | John Casey | 35 | Head | Fireman | Massachusetts |
| 72 | Mary Casey | 32 | Wife | None | Massachusetts |
| 73 | John Jr Casey | 5 | Son | None | Massachusetts |
| 74 | Helen Casey | 3 | Daughter | None | Massachusetts |
| 75 | Mary Casey | 1 | Daughter | None | Massachusetts |
| 76 | Margaret Casey | 0 | Daughter | None | Massachusetts |
| 77 | John Casey | 45 | Head | Layer | Massachusetts |
| 78 | Mary Casey | 41 | Wife | None | Massachusetts |
| 79 | John Jr Casey | 15 | Son | None | Massachusetts |
| 80 | Mary Casey | 12 | Daughter | None | Massachusetts |
| 81 | David Casey | 65 | Head | None | Ireland |
| 82 | Mary Casey | 64 | Wife | None | New York |
| 83 | Margaret Casey | 35 | Daughter | Clerk | Massachusetts |
| 84 | George L P Casey | 50 | Head | Superintendent | Massachusetts |
| 85 | Mary Casey | 48 | Wife | None | Massachusetts |
| 86 | George Jr Casey | 21 | Son | None | Massachusetts |
| 87 | Timothy J Casey | 56 | Head | Clerk | Massachusetts |
| 88 | Mary Casey | 53 | Wife | None | Massachusetts |
| 89 | Timothy Jr Casey | 25 | Son | None | Massachusetts |
| 90 | Mary Casey THIS PERSON | 23 | Daughter | None | Massachusetts |
| 91 | Helen Casey | 21 | Daughter | None | Massachusetts |
| 92 | Margaret Casey | 19 | Daughter | None | Massachusetts |
| 93 | Alice Casey | 17 | Daughter | None | Massachusetts |
| 94 | Frank Keough | 39 | Head | Contractor | Massachusetts |
| 95 | Pauline E Keough | 37 | Wife | None | Massachusetts |
| 96 | Frank Jr Keough | 13 | Son | None | Massachusetts |
| 97 | Pauline Keough | 8 | Daughter | None | Massachusetts |
| 98 | John A Strahan | 51 | Head | Operator | Canada English |
| 99 | Helen Strahan | 49 | Wife | None | Massachusetts |
| 100 | William J Strahan | 11 | Son | None | Massachusetts |
Pedigree Summary
Mary + 4 siblings
Gen 1 · 6 parents
~0.92
Max depth 4 (1900–1950 window)
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)