MC
Mary Conley — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Suffolk, Massachusetts
Our Model Tree links this Mary Conley across the 1920 and 1930 US Censuses in Suffolk, Massachusetts (XGBoost, ~Confirmed) — first a daughter (b.~1919), then head of a 7-person household.
Age 11
b. ~1919
Female
Daughter
Born: Massachusetts
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Suffolk, Massachusetts |
| Surname | Conley |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Maine |
| Mother's Birthplace | Massachusetts |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Boston City |
| Est. Birth Year | ~1919 |
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 Conley | Daughter | — | 11 | ~1919 |
| William Conley | Son | — | 10 | ~1920 |
| Theresa Conley | Daughter | — | 2 | ~1928 |
| John Conley | Son | — | 14 | ~1916 |
| Joseph Conley | Head | — | 42 | ~1888 |
| George Conley | Son | — | 8 | ~1922 |
| Paul Conley | Son | — | 5 | ~1925 |
Census Appearances
1920
Suffolk, Massachusetts
Other, age 1
Suffolk, Massachusetts · implied b. ~1919 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Conley |
| Given Name | Mary J. |
| Relationship to Head | Granddaughter |
| Sex | F |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Maine |
| Mother's Birthplace | Massachusetts |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Suffolk, Massachusetts
Daughter, age 11
Suffolk, Massachusetts · implied b. ~1919 — 7 household members
| Surname | Conley |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Maine |
| Mother's Birthplace | Massachusetts |
| 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 Conley across 2 US Census years (1920 and 1930) in Suffolk, Massachusetts, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Conley
Daughter · 1930 · age 11 · b. ~1919 · Massachusetts
★ You are viewing this record
Sibling
Paul Conley
Sibling · 1930 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Conley
Sibling · 1930 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
George Conley
Sibling · 1930 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Conley
Sibling · 1930 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Theresa Conley
Sibling · 1930 · age 2
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:massachusettscensus00reel946:0409)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Jeremiah O'Neil | 86 | Head | — | Irish Free State |
| 52 | Julia M. O'Neil | 73 | Wife | — | Irish Free State |
| 53 | Charles Zlabis | 62 | Head | Tailor | Lithuania |
| 54 | Anna Zlabis | 58 | Wife | — | Lithuania |
| 55 | Eva Zlabis | 22 | Daughter | Inspector | Massachusetts |
| 56 | August Hnewish | 44 | Head | Carpenter | Russia |
| 57 | Anna Hnewish | 36 | Wife | Cleaner | Lithuania |
| 58 | Michael Connolly | 50 | Head | Laborer | Irish Free State |
| 59 | Helen Connolly | 42 | Wife | — | Irish Free State |
| 60 | Michael J. Jr. Connolly | 18 | Son | Clerk | Massachusetts |
| 61 | Helen G. Connolly | 17 | Daughter | Stenographer | Massachusetts |
| 62 | Anna Connolly | 12 | Daughter | — | Massachusetts |
| 63 | Catherine Connolly | 10 | Daughter | — | Massachusetts |
| 64 | Thomas Connolly | 7 | Son | — | Massachusetts |
| 65 | Martin Connolly | 5 | Son | — | Massachusetts |
| 66 | Marie Connolly | 2 | Daughter | — | Massachusetts |
| 67 | Mary Coyne | 36 | Head | Solderer | Massachusetts |
| 68 | Frederick Hamilton | 65 | Head | Horseshoer | Canada-English |
| 69 | Catherine Hamilton | 65 | Wife | — | Irish Free State |
| 70 | Catherine Henry | 40 | Head | Operator | Massachusetts |
| 71 | Catherine B. Henry | 11 | Daughter | — | Massachusetts |
| 72 | Virginia H. Henry | 9 | Daughter | — | Massachusetts |
| 73 | Joseph Conley | 42 | Head | Laborer | Maine |
| 74 | John Conley | 14 | Son | — | Massachusetts |
| 75 | Mary Conley THIS PERSON | 11 | Daughter | — | Massachusetts |
| 76 | William Conley | 10 | Son | — | Massachusetts |
| 77 | George Conley | 8 | Son | — | Massachusetts |
| 78 | Paul Conley | 5 | Son | — | Massachusetts |
| 79 | Theresa Conley | 2 | Daughter | — | Massachusetts |
| 80 | Ella V. Donovan | 47 | Head | — | Massachusetts |
| 81 | Ella T. Donovan | 20 | Daughter | Twister | Massachusetts |
| 82 | Mary Donovan | 17 | Daughter | Finisher | Massachusetts |
| 83 | Alice Donovan | 14 | Daughter | — | Massachusetts |
| 84 | William Donovan | 11 | Son | — | Massachusetts |
| 85 | Joseph Starr | 46 | Head | Laborer | Montana |
| 86 | Mary Starr | 49 | Wife | — | Canada-English |
| 87 | William G. Kelly | 35 | Head | Proprietor | Massachusetts |
| 88 | Julia M. Kelly | 33 | Wife | — | Massachusetts |
| 89 | Catherine Kelly | 7 | Daughter | — | Massachusetts |
| 90 | John J. Kelly | 5 | Son | — | Massachusetts |
| 91 | William J. Kelly | 2 | Son | — | Massachusetts |
| 92 | Julia Kelly | 0 | Daughter | — | Massachusetts |
| 93 | Patrick Donahue | 81 | Head | — | Irish Free State |
| 94 | Margaret S. Donahue | 80 | Wife | — | Irish Free State |
| 95 | Sarah Conroy | 60 | Head | — | Irish Free State |
| 96 | Michael J. King | 41 | Head | Laborer | Irish Free State |
| 97 | Delia King | 35 | Wife | — | Irish Free State |
| 98 | Rita M. King | 13 | Daughter | — | Massachusetts |
| 99 | Walter King | 11 | Son | — | Massachusetts |
| 100 | Dorothy King | 8 | 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)