MC
Mary Conley — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Middlesex, Massachusetts
Our Model Tree links this Mary Conley across the 1920 and 1930 US Censuses in Middlesex, Massachusetts (XGBoost, ~Confirmed) — first a daughter (b.~1919), then head of a 9-person household.
Age 11
b. ~1919
Female
Daughter
Born: Massachusetts
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Middlesex, 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 | Cambridge 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.
9 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 |
| Robert Conley | Son | — | 8 | ~1922 |
| Anne Conley | Daughter | — | 15 | ~1915 |
| Edith Conley | Spouse | — | 42 | ~1888 |
| John Conley | Son | — | 13 | ~1917 |
| Edward Conley | Son | — | 17 | ~1913 |
| George O'Brien | Other | — | 42 | ~1888 |
| Edith Conley | Daughter | — | 10 | ~1920 |
| Edward Conley | Head | — | 51 | ~1879 |
Census Appearances
1920
Middlesex, Massachusetts
Daughter, age 1
Middlesex, Massachusetts · implied b. ~1919 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Conley |
| Given Name | Mary |
| Relationship to Head | Daughter |
| 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
Middlesex, Massachusetts
Daughter, age 11
Middlesex, Massachusetts · implied b. ~1919 — 9 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 Middlesex, 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
Edward Conley
Sibling · 1930 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Anne Conley
Sibling · 1930 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Conley
Sibling · 1930 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edith Conley
Sibling · 1930 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Conley
Sibling · 1930 · age 8
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:massachusettscensus00reel915:0957)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Mary E Montgomery | 40 | Wife | — | Massachusetts |
| 52 | Gertrude Montgomery | 13 | Son | — | Massachusetts |
| 53 | A Gertrude Montgomery | 12 | Son | — | Massachusetts |
| 54 | James A Montgomery | 67 | Brother | Salesman | Massachusetts |
| 55 | William H Montgomery | 44 | Brother | Letter Carrier | Massachusetts |
| 56 | Edith M Montgomery | 12 | Niece | — | Massachusetts |
| 57 | William H Jr Montgomery | 8 | Nephew | — | Massachusetts |
| 58 | Andrew A Graham | 60 | Head | Minister | Pennsylvania |
| 59 | Kate A Graham | 61 | Wife | — | Ohio |
| 60 | Nancy J Adams | 89 | Mother-in-law | — | Ohio |
| 61 | Samuel Pinnick | 47 | Head | Physician | Russia-Latvia |
| 62 | Anna Pinnick | 34 | Wife | — | Russia-Latvia |
| 63 | Marion Pinnick | 10 | Daughter | — | Russia-Latvia |
| 64 | Paul Pinnick | 11 | Son | — | Russia-Latvia |
| 65 | Isidore Rautenberg | 46 | Head | Salesman | Maine |
| 66 | Anna M Rautenberg | 46 | Wife | — | Massachusetts |
| 67 | Willard Rautenberg | 18 | Son | — | Massachusetts |
| 68 | Edna Rautenberg | 16 | Daughter | — | Massachusetts |
| 69 | Ralph Rautenberg | 13 | Son | — | Massachusetts |
| 70 | Carl Rautenberg | 5 | Son | — | Massachusetts |
| 71 | Clarence G Compton | 23 | Head | Forge Worker | Canada-English |
| 72 | Margaret R Compton | 23 | Wife | Waitress | Canada-English |
| 73 | Marjorie E Compton | 3 | Daughter | — | Massachusetts |
| 74 | Elizabeth M Compton | 1 | Daughter | — | Massachusetts |
| 75 | Mary E Maceachern | 51 | Mother-in-law | — | Canada-English |
| 76 | Herman Spberg | 27 | Boarder | Carpenter | Sweden |
| 77 | Richard Magann | 78 | Head | Laborer Supplies | England |
| 78 | Minnie Magann | 67 | Wife | — | Canada-English |
| 79 | Israel Ratner | 40 | Head | Retail Clothing | Russia-Grodno |
| 80 | Dora Ratner | 36 | Wife | — | Russia-Grodno |
| 81 | George Ratner | 9 | Son | — | Massachusetts |
| 82 | Beatrice Ratner | 3 | Son | — | Massachusetts |
| 83 | Anna G Miller | 26 | Boarder | Stenographer | Russia-Ukrania |
| 84 | Edward J Conley | 51 | Head | Undertaker | Maine |
| 85 | Edith M Conley | 42 | Wife | — | Massachusetts |
| 86 | Edward A Conley | 17 | Son | — | Massachusetts |
| 87 | Anne C Conley | 15 | Daughter | — | Massachusetts |
| 88 | John P Conley | 13 | Son | — | Massachusetts |
| 89 | Mary Conley THIS PERSON | 11 | Daughter | — | Massachusetts |
| 90 | Edith Conley | 10 | Daughter | — | Maine |
| 91 | Robert Conley | 8 | Son | — | Massachusetts |
| 92 | George F O'Brien | 42 | Brother-in-law | Real Estate Broker | Massachusetts |
| 93 | Jacob Wasserman | 48 | Head | Sheet Metal Worker | Russia-Riga |
| 94 | Ethel Wasserman | 45 | Wife | — | Russia-Riga |
| 95 | Anna Wasserman | 22 | Daughter | Bookkeeper | New York |
| 96 | Louis R Wasserman | 19 | Son | — | New York |
| 97 | Max Wasserman | 17 | Son | — | Massachusetts |
| 98 | Natalie Wasserman | 9 | Daughter | — | Massachusetts |
| 99 | Hyman Wasserman | 75 | Brother | — | Russia-Riga |
| 100 | Isadore Blum | 45 | Head | Pawn Broker | Poland |
Related Census Records
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)