JM
John Mcconnell — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Middlesex, Massachusetts
Our Model Tree links this John Mcconnell across the 1930 and 1940 US Censuses in Middlesex, Massachusetts (XGBoost, ~Confirmed) — first a son (b.~1923), then head of a 7-person household.
Age 7
b. ~1923
Male
Son
Born: Massachusetts
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Middlesex, Massachusetts |
| Surname | McConnell |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | Irish Free State |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Somerville City |
| Est. Birth Year | ~1923 |
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 |
|---|---|---|---|---|
| Julia Mcconnell | Daughter | — | 11 | ~1919 |
| Helen Mcconnell | Daughter | — | 5 | ~1925 |
| Margaret Mcconnell | Daughter | — | 9 | ~1921 |
| Hannah Mcconnell | Spouse | — | 35 | ~1895 |
| Michael Mcconnell | Head | — | 34 | ~1896 |
| John Mcconnell | Son | — | 7 | ~1923 |
| Michael Mcconnell | Son | — | 3 | ~1927 |
Census Appearances
1930
Middlesex, Massachusetts
Son, age 7
Middlesex, Massachusetts · implied b. ~1923 — 7 household members
| Surname | McConnell |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | Irish Free State |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Suffolk-County, Massachusetts
Son, age 17
Suffolk-County, Massachusetts · implied b. ~1923 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McConnally |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston |
| 1935 Residence (County) | Suffolk |
| Class of Worker | 0 |
| Highest Grade | Hs 2 |
| 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 Mcconnell across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Mcconnell
Son · 1930 · age 7 · b. ~1923 · Massachusetts
★ You are viewing this record
Sibling
Margaret Mcconnell
Sibling · 1930 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Julia Mcconnell
Sibling · 1930 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Helen Mcconnell
Sibling · 1930 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Michael Mcconnell
Sibling · 1930 · age 3
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:massachusettscensus00reel927:1023)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Michael J Mcconnell | 34 | Head | Laborer | Irish Free State |
| 2 | Hannah M Mcconnell | 35 | Wife | — | Irish Free State |
| 3 | Julia M Mcconnell | 11 | Daughter | — | Massachusetts |
| 4 | Margaret Mcconnell | 9 | Daughter | — | Massachusetts |
| 5 | John Mcconnell THIS PERSON | 7 | Son | — | Massachusetts |
| 6 | Helen Mcconnell | 5 | Daughter | — | Massachusetts |
| 7 | Michael Mcconnell | 3 | Son | — | Massachusetts |
| 8 | John Bento | 42 | Head | Helper | Portugal |
| 9 | Nina Bento | 42 | Wife | — | Portugal |
| 10 | Mary Bento | 17 | Niece | Binder | Portugal |
| 11 | John P Crowley | 39 | Head | Barrel Dealer | Massachusetts |
| 12 | Isabelle V Crowley | 40 | Wife | — | Massachusetts |
| 13 | John F Crowley | 14 | Son | — | Massachusetts |
| 14 | William P Crowley | 11 | Son | — | Massachusetts |
| 15 | Marion J Crowley | 7 | Daughter | — | Massachusetts |
| 16 | Elizabeth A Crowley | 5 | Daughter | — | Massachusetts |
| 17 | Percy P Lowe | 55 | Head | Carpenter | New Hampshire |
| 18 | Kathleen E Lowe | 45 | Wife | — | Canada English |
| 19 | Percy W Lowe | 8 | Son | — | Connecticut |
| 20 | Edwin Lowe | 6 | Son | — | Massachusetts |
| 21 | Beatrice Lowe | 3 | Daughter | — | Massachusetts |
| 22 | James J Lally | 45 | Head | Chauffeur | Massachusetts |
| 23 | Annie F Lally | 41 | Wife | — | Canada English |
| 24 | Helen F Lally | 17 | Daughter | Salesgirl | Massachusetts |
| 25 | Thomas J Lally | 16 | Son | — | Massachusetts |
| 26 | Mary E Lally | 13 | Daughter | — | Massachusetts |
| 27 | Eugene F Lally | 5 | Son | — | Massachusetts |
| 28 | Henry P King | 33 | Head | Chauffeur | Massachusetts |
| 29 | Martha E King | 24 | Wife | — | Massachusetts |
| 30 | Henry King | 7 | Son | — | Massachusetts |
| 31 | William F King | 6 | Son | — | Massachusetts |
| 32 | Elizabeth L King | 4 | Daughter | — | Massachusetts |
| 33 | Robert E King | 2 | Son | — | Massachusetts |
| 34 | Albert J Gagnon | 27 | Head | Chauffeur | Massachusetts |
| 35 | Margaret D Gagnon | 25 | Wife | — | Massachusetts |
| 36 | Albert J Jr Gagnon | 1 | Son | — | Massachusetts |
| 37 | Mary E Gagnon | 47 | Head | — | Massachusetts |
| 38 | M Adeline Gagnon | 18 | Daughter | — | Massachusetts |
| 39 | Mary A Cunningham | 53 | Head | — | Irish Free State |
| 40 | Joseph F Cunningham | 26 | Son | Laborer | Massachusetts |
| 41 | Dennis Corbin | 25 | Boarder | Laborer | Irish Free State |
| 42 | Daniel Drummond | 28 | Boarder | Laborer | Irish Free State |
| 43 | Daniel Smiddy | 48 | Boarder | Laborer | Irish Free State |
| 44 | James J Donnelly | 26 | Boarder | Laborer | Irish Free State |
| 45 | Daniel J Keefe | 34 | Boarder | Laborer | Irish Free State |
| 46 | James H King | 34 | Head | Laborer | Massachusetts |
| 47 | Lillian M King | 27 | Wife | — | Massachusetts |
| 48 | Lillian M King | 5 | Daughter | — | Massachusetts |
| 49 | Kathleen E King | 4 | Daughter | — | Massachusetts |
| 50 | James H Jr King | 2 | Son | — | 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)