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John Conroy — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Middlesex, Massachusetts
Our Model Tree links this John Conroy across the 1930 and 1940 US Censuses in Middlesex, Massachusetts (XGBoost, ~Confirmed) — first a son (b.~1919), then head of a 7-person household.
Age 11
b. ~1919
Male
Son
Born: Massachusetts
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Middlesex, Massachusetts |
| Surname | Conroy |
| Given Name | John F. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Scotland |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Lexington Township |
| 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 John | Age | Birth yr |
|---|---|---|---|---|
| Michael Conroy | Head | — | 47 | ~1883 |
| Andrew Conroy | Son | — | 18 | ~1912 |
| John Conroy | Son | — | 11 | ~1919 |
| Rose Conroy | Spouse | — | 47 | ~1883 |
| Rose Conroy | Daughter | — | 15 | ~1915 |
| Rachel Conroy | Daughter | — | 8 | ~1922 |
| Mary Conroy | Daughter | — | 21 | ~1909 |
Census Appearances
1930
Middlesex, Massachusetts
Son, age 11
Middlesex, Massachusetts · implied b. ~1919 — 7 household members
| Surname | Conroy |
| Given Name | John F. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Scotland |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Middlesex-County, Massachusetts
Son, age 22
Middlesex-County, Massachusetts · implied b. ~1918 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Conry |
| Given Name | John J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Medford City |
| 1935 Residence (County) | Middlesex |
| Occupation | Radio Operator |
| Industry | Police Department |
| Class of Worker | GW |
| Hours Worked | 44 |
| Income (1939) | 2100 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| 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 John Conroy across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Conroy
Son · 1930 · age 11 · b. ~1919 · Massachusetts
★ You are viewing this record
Sibling
Mary Conroy
Sibling · 1930 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Rachel Conroy
Sibling · 1930 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Rose Conroy
Sibling · 1930 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Andrew Conroy
Sibling · 1930 · age 18
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:massachusettscensus00reel919:0916)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Nicholas Karatony | 57 | Lodger | Chef | Albania |
| 2 | Mike Halldis | 25 | Lodger | Kitchen | Albania |
| 3 | William F. Breen | 58 | Head | Station Master | Newfoundland |
| 4 | Esther R. Breen | 49 | Wife | — | Canada-English |
| 5 | William F. Jr. Breen | 21 | Son | — | Massachusetts |
| 6 | Arthur M. Breen | 15 | Son | — | Massachusetts |
| 7 | Esther M. Breen | 13 | Daughter | — | Massachusetts |
| 8 | George L. Breen | 6 | Son | — | Massachusetts |
| 9 | Caroline M. Pennington | 58 | Head | Proprietress | Massachusetts |
| 10 | Phoebe E. M. Hutchins | 67 | Sister | Proprietress | Massachusetts |
| 11 | Emma Cappuccini | 31 | Servant | Domestic | Canada-French |
| 12 | Wendell Lindenberg | 54 | Head | Machinist | Hungary |
| 13 | Mary Lindenberg | 46 | Wife | — | Hungary |
| 14 | Mary J. Lindenberg | 20 | Daughter | Stenographer | Massachusetts |
| 15 | John F. Lindenberg | 18 | Son | Bell Boy | Massachusetts |
| 16 | Stephen F. Lindenberg | 15 | Son | — | Massachusetts |
| 17 | William W. Lindenberg | 12 | Son | — | Massachusetts |
| 18 | Margaret Mchugh | 63 | Head | — | Canada-English |
| 19 | Leo J. Mchugh | 32 | Son | Salesman | Massachusetts |
| 20 | Mary Mchugh | 27 | Daughter | Supervisor | Massachusetts |
| 21 | Alice Mchugh | 25 | Daughter | Laborer | Massachusetts |
| 22 | Matilda Campbell | 67 | Head | — | Scotland |
| 23 | Michael J. Conroy | 47 | Head | Plumber | Massachusetts |
| 24 | Rose A. Conroy | 47 | Wife | — | Scotland |
| 25 | Mary E. Conroy | 21 | Daughter | Bookkeeper | Massachusetts |
| 26 | Andrew J. Conroy | 18 | Son | — | Massachusetts |
| 27 | Rose C. Conroy | 15 | Daughter | — | Massachusetts |
| 28 | John F. Conroy THIS PERSON | 11 | Son | — | Massachusetts |
| 29 | Rachel R. Conroy | 8 | Daughter | — | Massachusetts |
| 30 | Robert H. Walker | 56 | Head | Candy Maker | Canada-English |
| 31 | Isabella Walker | 59 | Wife | — | Canada-English |
| 32 | Percy S. Walker | 20 | Son | — | Canada-English |
| 33 | Agnes Tebeyan | 50 | Head | Truck Driver | Canada-French |
| 34 | Bertha Claggan | 27 | Head | — | Canada-French |
| 35 | Marcel J. O. Claggan | 2 | Son | — | New Hampshire |
| 36 | William S. Collins | 51 | Head | Machinist | Massachusetts |
| 37 | Annie E. Collins | 51 | Wife | — | Massachusetts |
| 38 | Arthur W. Collins | 24 | Son | Salesman | Massachusetts |
| 39 | Elizabeth T. Collins | 21 | Daughter | Bookkeeper | Massachusetts |
| 40 | Mary R. Collins | 19 | Daughter | Stenographer | Massachusetts |
| 41 | Philip Collins | 6 | Son | — | Massachusetts |
| 42 | Charles Bettencourt | 24 | Head | Laborer | Massachusetts |
| 43 | Laura Bettencourt | 19 | Wife | — | Massachusetts |
| 44 | Mary L. Kelley | 50 | Head | Housework | Massachusetts |
| 45 | Stephen W. Kelley | 25 | Son | — | Massachusetts |
| 46 | Lucy W. Kelley | 16 | Daughter | — | Massachusetts |
| 47 | Robert P. Kelley | 15 | Son | — | Massachusetts |
| 48 | Martha Jane Kelley | 12 | Daughter | — | Massachusetts |
| 49 | James H. Courtney | 57 | Head | Broker | Bermuda |
| 50 | Susan M. Courtney | 56 | Wife | — | Canada-English |
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)