JC
John Connelly — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Middlesex, Massachusetts
Our Model Tree links this John Connelly across the 1920, 1930 and 1940 US Censuses in Middlesex, Massachusetts (XGBoost, ~Confirmed) — first a head (b.~1889), then head of a 4-person household.
Age 41
b. ~1889
Male
Head
Born: Ireland
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Middlesex, Massachusetts |
| Surname | Connelly |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 41 |
| Marital Status | Married |
| Birthplace | Ireland |
| Naturalization Status | Naturalized |
| Year of Immigration | 1901 |
| Age at First Marriage | 21 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Additional Details | |
| Occupation | Engineer |
| Industry | Street |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Home Owned/Rented | O |
| Home Value / Rent | 5000 |
| Radio Set | R |
| Veteran | no |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
| Occupation | Engineer |
| Township / Ward | Medford City |
| Est. Birth Year | ~1889 |
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 John | Age | Birth yr |
|---|---|---|---|---|
| Laura Connelly | Other | — | 41 | ~1889 |
| Mary Connelly | Daughter | — | 13 | ~1917 |
| John Connelly | Son | — | 17 | ~1913 |
| John Connelly | Head | — | 41 | ~1889 |
Census Appearances
1920
Suffolk, Massachusetts
Other, age 31
Suffolk, Massachusetts · implied b. ~1889 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Connolly |
| Given Name | John |
| Relationship to Head | Boarder |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Single |
| Birthplace | Ireland |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Fireman |
| Industry | Railroad |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth Country | Ireland |
| Year of Naturalization | 1917 |
| Birthplace (normalized) | ireland |
1930
Middlesex, Massachusetts
Head, age 41
Middlesex, Massachusetts · implied b. ~1889 — 4 household members
| Surname | Connelly |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 41 |
| Marital Status | Married |
| Birthplace | Ireland |
| Naturalization Status | Naturalized |
| Year of Immigration | 1901 |
| Age at First Marriage | 21 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Engineer |
| Industry | Street |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Home Owned/Rented | O |
| Home Value / Rent | 5000 |
| Radio Set | R |
| Veteran | no |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
Head, age 50
Middlesex-County, Massachusetts · implied b. ~1890 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Connolly |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 50 |
| Marital Status | Married |
| Birthplace | Ireland |
| 1935 Residence (City) | Massachusetts |
| 1935 Residence (County) | Middlesex |
| Naturalization Status | Naturalized |
| Occupation | Laborer |
| Industry | First National Stores |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1560 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| 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 John Connelly across 3 US Census years (1920, 1930 and 1940) in 3 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Connelly
Head · 1930 · age 41 · b. ~1889 · Massachusetts
★ You are viewing this record
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:massachusettscensus00reel924:0623)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Abigail Quinton | 49 | Wife-H | None | Newfoundland |
| 2 | Charles Quinton | 23 | Son | Carpenter | Massachusetts |
| 3 | Samuel Quinton | 22 | Son | None | Massachusetts |
| 4 | Walter B Quinton | 19 | Son | Clerk | Massachusetts |
| 5 | Hilda B Quinton | 16 | Daughter | None | Massachusetts |
| 6 | Harold Quinton | 14 | Son | None | Massachusetts |
| 7 | Reginald Quinton | 12 | Son | None | Massachusetts |
| 8 | Evelyn A Quinton | 9 | Daughter | None | Massachusetts |
| 9 | Ruth M Quinton | 8 | Daughter | None | Massachusetts |
| 10 | Alfred J Quinton | 5 | Son | None | Massachusetts |
| 11 | Eleanor M Quinton | 23 | Daughter-in-law | None | Canada-English |
| 12 | John Barter | 42 | Head | Carpenter | Newfoundland |
| 13 | Margaret Barter | 38 | Wife-H | None | Ireland |
| 14 | John Jr. Barter | 16 | Son | None | Massachusetts |
| 15 | Mary Barter | 14 | Daughter | None | Connecticut |
| 16 | Edward Barter | 15 | Nephew | None | Massachusetts |
| 17 | Gertrude Barter | 14 | Niece | None | Connecticut |
| 18 | Mildred Barter | 13 | Niece | None | Massachusetts |
| 19 | Ralph Creamer | 21 | Boarder | Mattress Maker | Maine |
| 20 | William Clements | 50 | Head | Carpenter | Newfoundland |
| 21 | Laura Clements | 43 | Wife-H | None | Newfoundland |
| 22 | Laura A Clements | 21 | Daughter | None | Massachusetts |
| 23 | Ethel M Clements | 18 | Daughter | None | Massachusetts |
| 24 | Gerald J Clements | 15 | Son | None | Massachusetts |
| 25 | William H Clements | 12 | Son | None | Massachusetts |
| 26 | Ina Clements | 8 | Daughter | None | Massachusetts |
| 27 | George L Clements | 5 | Son | None | Massachusetts |
| 28 | Harold D Clements | 2 | Son | None | Massachusetts |
| 29 | Verna M King | 1 | Granddaughter | None | Massachusetts |
| 30 | Thomas Murphy | 44 | Brother-in-law | Oiler | Newfoundland |
| 31 | William Oliver | 42 | Head | Shipper | Ireland |
| 32 | Florence Oliver | 35 | Wife-H | None | Massachusetts |
| 33 | Ethel Oliver | 12 | Daughter | None | Massachusetts |
| 34 | William Oliver | 5 | Son | None | Massachusetts |
| 35 | Joseph Baldwin | 50 | Head | Carpenter | Canada-English |
| 36 | Catherine Baldwin | 41 | Wife-H | None | Canada-English |
| 37 | Michael Rock | 60 | Head | Laborer | Ireland |
| 38 | Margaret Rock | 50 | Wife-H | None | Canada-English |
| 39 | Rebecca Acheley | 35 | Head | None | Ireland |
| 40 | Helen Acheley | 8 | Daughter | None | Massachusetts |
| 41 | Mary Acheley | 4 | Daughter | None | Massachusetts |
| 42 | Daniel Acheley | 1 | Son | None | Massachusetts |
| 43 | Theresa Acheley | 0 | Daughter | None | Massachusetts |
| 44 | Fred W Danish | 52 | Head | Machinist | Vermont |
| 45 | Jeanette Danish | 52 | Wife-H | None | Norway |
| 46 | Louis H Danish | 29 | Son | Pressman | New Hampshire |
| 47 | John Connelly THIS PERSON | 41 | Head | Engineer | Ireland |
| 48 | Laura Connelly | 41 | Wife-H | None | Ireland |
| 49 | John Connelly | 17 | Son | None | Massachusetts |
| 50 | Mary Connelly | 13 | Daughter | None | Massachusetts |
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)