JP
John Perry — 1940 US Census Record
Model Tree available1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this John Perry across the 1920, 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed), with identified parents Manuel & Mary — first a son (b.~1911), then head of a 6-person household.
Age 29
b. ~1911
Male
Son
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | Perry |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Somerville city |
| 1935 Residence (County) | Middlesex |
| Additional Details | |
| Occupation | Laborer |
| Industry | Sewer Project |
| Class of Worker | GW |
| Hours Worked | 30 |
| Income (1939) | 856 |
| Highest Grade | H-2 |
| 1935 Residence | Same House |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Laborer |
| Township / Ward | Somerville City |
| Est. Birth Year | ~1911 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Alice Perry | Daughter | — | 20 | ~1920 |
| Manuel Perry | Head | — | 62 | ~1878 |
| Michael Perry | Son | — | 28 | ~1912 |
| Frank Perry | Son | — | 22 | ~1918 |
| John Perry | Son | — | 29 | ~1911 |
| Mary Perry | Spouse | — | 62 | ~1878 |
Census Appearances
1920
Middlesex, Massachusetts
Son, age 8
Middlesex, Massachusetts · implied b. ~1912 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Perry |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 8 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Portugal |
| Mother's Birthplace | Portugal |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Middlesex, Massachusetts
Son, age 19
Middlesex, Massachusetts · implied b. ~1911 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Perry |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Portugal |
| Mother's Birthplace | Portugal |
| Occupation | Clerk |
| Industry | Grocery |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Middlesex-County, Massachusetts
Son, age 29
Middlesex-County, Massachusetts · implied b. ~1911 — 6 household members
| Surname | Perry |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Somerville city |
| 1935 Residence (County) | Middlesex |
| Occupation | Laborer |
| Industry | Sewer Project |
| Class of Worker | GW |
| Hours Worked | 30 |
| Income (1939) | 856 |
| Highest Grade | H-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 Perry across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Manuel Perry (~0.92 confidence) and mother Mary Perry (~0.92 confidence) and mother Mary Perry (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Manuel Perry
b. ~1878
Source father
● Household
· direct · ~0.92
Mother
Mary Perry
b. ~1878
Source mother
● Household
· direct · ~0.92
Mother
Mary Perry
b. ~1879
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Perry
Son · 1940 · age 29 · b. ~1911 · Massachusetts
★ You are viewing this record
Sibling
Alice Perry
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Frank Perry
Sibling · 1940 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Michael Perry
Sibling · 1940 · age 28
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 — Middlesex-County, Massachusetts
Open full size
1940 US Federal Census — Middlesex-County, Massachusetts
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01702-00597)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | George W Spring | 51 | Head | Laborer | Massachusetts |
| 2 | Julia Spring | 50 | Wife | Mechanic | Massachusetts |
| 3 | Arthur Spring | 19 | Son | New Worker | Massachusetts |
| 4 | Frank Spring | 14 | Son | — | Massachusetts |
| 5 | Herbert Spring | 13 | Son | — | Massachusetts |
| 6 | Charles Usholow | Usholou | 49 | Head | Machinist | Massachusetts |
| 7 | Rose Usholow | Usholou | 44 | Wife | — | Massachusetts |
| 8 | Rachel Usholow | Usholou | 25 | Daughter | Folder | Massachusetts |
| 9 | Charlotte Usholow | Usholou | 23 | Daughter | New Worker | Massachusetts |
| 10 | Benjamin Usholow | Usholou | 21 | Son | Bleacher | Massachusetts |
| 11 | Rebecca Usholow | Usholou | 19 | Daughter | New Worker | Massachusetts |
| 12 | Barbara Usholow | Usholou | 18 | Daughter | New Worker | Massachusetts |
| 13 | Aaron Usholow | Usholou | 18 | Son | Floor Boy | Massachusetts |
| 14 | Isaac Usholow | Usholou | 16 | Son | New Worker | Massachusetts |
| 15 | Leo Usholow | Usholou | 16 | Son | — | Massachusetts |
| 16 | Frank Pinto | 71 | Head | Leaver | Portugal |
| 17 | Matilda Pinto | 42 | Daughter | Stitcher | Portugal |
| 18 | Joseph Pinto | 24 | Son | Floor Boy | Portugal |
| 19 | Anthony Costa | 68 | Head | Casket Maker | Portugal |
| 20 | Mary Costa | 64 | Wife | — | Portugal |
| 21 | Alfred S. Baglieri | 54 | Head | Barber | Portugal |
| 22 | Mary G. Baglieri | 39 | Wife | Facer | Portugal |
| 23 | Concettina Baglieri | 16 | Daughter | New Worker | Massachusetts |
| 24 | Alfred Jr. Baglieri | 23 | Head | Laster | Portugal |
| 25 | Mary E. Baglieri | 22 | Wife | Stitcher | Massachusetts |
| 26 | Mary Keefe | 24 | Head | — | Massachusetts |
| 27 | Mary E. Keefe | 2 | Daughter | — | Massachusetts |
| 28 | Manuel Perry | 62 | Head | Painter | Portugal |
| 29 | Mary Perry | 62 | Wife | — | Portugal |
| 30 | John Perry THIS PERSON | 29 | Son | Laborer | Massachusetts |
| 31 | Alice Perry | 20 | Daughter | New Worker | Massachusetts |
| 32 | Michael Perry | 28 | Son | New Worker | Massachusetts |
| 33 | Frank Perry | 22 | Son | Laborer | Massachusetts |
| 34 | David S. Roderick | 46 | Head | Laborer | Massachusetts |
| 35 | Mary Roderick | 40 | Wife | — | Massachusetts |
| 36 | Cecelia Roderick | 21 | Daughter | Stitcher | Massachusetts |
| 37 | Doris Roderick | 18 | Daughter | — | Massachusetts |
| 38 | Adelmina Roderick | 11 | Daughter | — | Massachusetts |
| 39 | Charles Roderick | 7 | Son | — | Massachusetts |
| 40 | James Roderick | 5 | Son | — | Massachusetts |
Pedigree Summary
John + 3 siblings
Gen 1 · 3 parents
~0.92
Max depth 4 (1900–1950 window)
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)