JW
John Welch — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Suffolk-County, Massachusetts
Our Model Tree links this John Welch across the 1930 and 1940 US Censuses in Suffolk-County, Massachusetts (XGBoost, ~Confirmed) — first a son (b.~1923), then head of a 10-person household.
Age 17
b. ~1923
Male
Son
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Suffolk-County, Massachusetts |
| Surname | Welch |
| Given Name | John J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston City |
| 1935 Residence (County) | Suffolk |
| Additional Details | |
| Occupation | New Worker |
| Highest Grade | Hs 2 |
| 1935 Residence | Same House |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | New Worker |
| Township / Ward | Boston 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.
10 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Mary Welch | Daughter | — | 21 | ~1919 |
| Agnes Welch | Daughter | — | 7 | ~1933 |
| Irene Welch | Daughter | — | 5 | ~1935 |
| Michael Welch | Head | — | 45 | ~1895 |
| John Welch | Son | — | 17 | ~1923 |
| Richard Welch | Son | — | 19 | ~1921 |
| Joseph Welch | Son | — | 15 | ~1925 |
| Paul Welch | Son | — | 3 | ~1937 |
| William Welch | Son | — | 10 | ~1930 |
| Mary Welch | Spouse | — | 42 | ~1898 |
Census Appearances
1930
Suffolk, Massachusetts
Son, age 5
Suffolk, Massachusetts · implied b. ~1925 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Welch |
| Given Name | John J |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Can Read/Write | No |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Suffolk-County, Massachusetts
Son, age 17
Suffolk-County, Massachusetts · implied b. ~1923 — 10 household members
| Surname | Welch |
| Given Name | John J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston City |
| 1935 Residence (County) | Suffolk |
| Occupation | New Worker |
| Highest Grade | Hs 2 |
| 1935 Residence | Same House |
| 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 Welch across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Welch
Son · 1940 · age 17 · b. ~1923 · Massachusetts
★ You are viewing this record
Sibling
Irene Welch
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Paul Welch
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Welch
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Welch
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Welch
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Richard Welch
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Agnes Welch
Sibling · 1940 · age 7
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
1940 US Federal Census — Suffolk-County, Massachusetts
Open full size
1940 US Federal Census — Suffolk-County, Massachusetts
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01682-00168)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Roland Lakeman | 4 | Grandson | — | Massachusetts |
| 42 | Dana Lakeman | 2 | Grandson | — | Massachusetts |
| 43 | Bertha Dombrowski | 53 | Head | — | Poland |
| 44 | Henrietta Dombrowski | 23 | Daughter | Assembler | Massachusetts |
| 45 | Wanda Dombrowski | 22 | Daughter | Laster | Massachusetts |
| 46 | Edward Dombrowski | 19 | Son | New Worker | Massachusetts |
| 47 | Helen Dombrowski | 18 | Daughter | Silk Spinner | Massachusetts |
| 48 | Irene Dombrowski | 15 | Daughter | — | Massachusetts |
| 49 | Joseph Dombrowski | 12 | Son | — | Massachusetts |
| 50 | Leocadia Strane | 20 | Daughter | Silk Spinner | Massachusetts |
| 51 | James Di Milia | 45 | Head | Laborer | Massachusetts |
| 52 | Catherine Di Milia | 29 | Wife | — | Italy |
| 53 | Rose Marie Di Milia | 2 | Daughter | — | Massachusetts |
| 54 | Donna Colletti | 21 | none | — | Massachusetts |
| 55 | Michael F. Welch | 45 | Head | Chauffeur | Massachusetts |
| 56 | Mary E. Welch | 42 | Wife | — | Massachusetts |
| 57 | Mary Ellen Welch | 21 | Daughter | — | Massachusetts |
| 58 | Richard F. Welch | 19 | Son | Delivery Man | Massachusetts |
| 59 | John J. Welch THIS PERSON | 17 | Son | New Worker | Massachusetts |
| 60 | Joseph W. Welch | 15 | Son | — | Massachusetts |
| 61 | William R. Welch | 10 | Son | — | Massachusetts |
| 62 | Agnes P. Welch | 7 | Daughter | — | Massachusetts |
| 63 | Irene F. Welch | 5 | Daughter | — | Massachusetts |
| 64 | Paul G. Welch | 3 | Son | — | Massachusetts |
| 65 | Fred J. Dwyer | 41 | Head | Laborer | Maine |
| 66 | Mary E. Dwyer | 38 | Wife | — | Massachusetts |
| 67 | Mary A. Dwyer | 18 | Daughter | — | Massachusetts |
| 68 | James F. Dwyer | 16 | Son | — | Massachusetts |
| 69 | Anna C. Dwyer | 14 | Daughter | — | Massachusetts |
| 70 | Gertrude Dwyer | 12 | Daughter | — | Massachusetts |
| 71 | Robert Dwyer | 10 | Son | — | Massachusetts |
| 72 | Walter Dwyer | 8 | Son | — | Massachusetts |
| 73 | Lawrence Dwyer | 6 | Son | — | Massachusetts |
| 74 | Margaret Dwyer | 2 | Daughter | — | Massachusetts |
| 75 | John Joseph Dwyer | 0 | Son | — | Massachusetts |
| 76 | James F. Dwyer | 79 | Father | — | Massachusetts |
| 77 | Gustave Noe | 47 | Head | Tree Surgeon | France |
| 78 | Lily Noe | 49 | Wife | — | Canada |
| 79 | Mary Noe | 20 | Daughter | — | Massachusetts |
| 80 | Jeanette Noe | 20 | Daughter | Bookbinder | Massachusetts |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1940 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)