JC
James Collins — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Suffolk-County, Massachusetts
Our Model Tree links this James Collins across the 1930 and 1940 US Censuses in Suffolk-County, Massachusetts (XGBoost, ~Confirmed) — first a son (b.~1919), then head of a 12-person household.
Age 21
b. ~1919
Male
Son
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Suffolk-County, Massachusetts |
| Surname | Collins |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston City |
| 1935 Residence (County) | Suffolk |
| Additional Details | |
| Occupation | Laborer |
| Industry | Steam Railroad |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 900 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Laborer |
| Township / Ward | Boston City |
| 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.
12 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| Mildred Collins | Daughter | — | 22 | ~1918 |
| Alice Jewell | Daughter | — | 12 | ~1928 |
| Florence Jewell | Daughter | — | 17 | ~1923 |
| Mary Collins | Daughter | — | 15 | ~1925 |
| James Collins | Head | — | 53 | ~1887 |
| John Collins | Son | — | 16 | ~1924 |
| James Collins | Son | — | 21 | ~1919 |
| Christopher Collins | Son | — | 18 | ~1922 |
| Christopher Jewell | Son | — | 13 | ~1927 |
| Alexander Jewell | Son | — | 22 | ~1918 |
| Helen Jewell | Spouse | — | 45 | ~1895 |
| Sarah Collins | Spouse | — | 53 | ~1887 |
Census Appearances
1930
Suffolk, Massachusetts
Son, age 12
Suffolk, Massachusetts · implied b. ~1918 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Collins |
| Given Name | James |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Irish F. State |
| Mother's Birthplace | Irish F. State |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Suffolk-County, Massachusetts
Son, age 21
Suffolk-County, Massachusetts · implied b. ~1919 — 12 household members
| Surname | Collins |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston City |
| 1935 Residence (County) | Suffolk |
| Occupation | Laborer |
| Industry | Steam Railroad |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 900 |
| Highest Grade | Hs 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 James Collins across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
James Collins
Son · 1940 · age 21 · b. ~1919 · Massachusetts
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Sibling
John Collins
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Christopher Collins
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Christopher Jewell
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Collins
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Alexander Jewell
Sibling · 1940 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mildred Collins
Sibling · 1940 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Florence Jewell
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Alice Jewell
Sibling · 1940 · age 12
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-t0627-01668-00428)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Patricia Connolly | 6 | Daughter | — | Massachusetts |
| 2 | James Connolly | 4 | Son | — | Massachusetts |
| 3 | Jean Connolly | 3 | Daughter | — | Massachusetts |
| 4 | Margaret Pickett | 53 | Wife | — | Canada English |
| 5 | William Pickett | 67 | Head | — | Canada English |
| 6 | Herbert Pickett | 16 | Son | — | Canada English |
| 7 | Harold Mccaig | 36 | Son-in-law | Counterman | Massachusetts |
| 8 | Alice Mccaig | 30 | Daughter | — | Massachusetts |
| 9 | Richard Mcmahon | 50 | Head | — | Irish Free State |
| 10 | Nellie Mcmahon | 45 | Wife | — | Irish Free State |
| 11 | Ethel Mcmahon | 17 | Daughter | New Worker | Massachusetts |
| 12 | Fred Mcmahon | 15 | Son | New Worker | Massachusetts |
| 13 | Margaret Mcmahon | 14 | Daughter | New Worker | Massachusetts |
| 14 | Richard Jr. Mcmahon | 7 | Son | — | Massachusetts |
| 15 | Helen Mcmahon | 4 | Daughter | — | Massachusetts |
| 16 | James Collins | 53 | Head | Longshoreman | Irish Free State |
| 17 | Sarah Collins | 53 | Wife | — | Irish Free State |
| 18 | Mildred Collins | 22 | Daughter | Clerk-File | Massachusetts |
| 19 | James Collins THIS PERSON | 21 | Son | Laborer | Massachusetts |
| 20 | Christopher Collins | 18 | Son | — | Massachusetts |
| 21 | John Collins | 16 | Son | — | Massachusetts |
| 22 | Mary Collins | 15 | Daughter | — | Massachusetts |
| 23 | Helen Jewell | 45 | Wife | — | Greece |
| 24 | Alexander Jewell | 22 | Son | Baker | Massachusetts |
| 25 | Florence Jewell | 17 | Daughter | — | New Jersey |
| 26 | Christopher Jewell | 13 | Son | — | Massachusetts |
| 27 | Alice Jewell | 12 | Daughter | — | Massachusetts |
| 28 | George Jewell | 47 | Head | — | Greece |
| 29 | Michael Forkin | 55 | Head | — | Irish Free State |
| 30 | Bridget Forkin | 53 | Wife | — | Irish Free State |
| 31 | Michael Jr. Forkin | 32 | Son | Laborer | Irish Free State |
| 32 | Patrick Forkin | 30 | Son | Laborer | Irish Free State |
| 33 | Thomas Forkin | 28 | Son | Clerk-Billing | Massachusetts |
| 34 | John Forkin | 25 | Son | Chauffeur | Massachusetts |
| 35 | James Forkin | 23 | Son | Clerk-Typist | Massachusetts |
| 36 | Mary Forkin | 22 | Daughter | Packer | Massachusetts |
| 37 | Helen Forkin | 20 | Daughter | Waitress | Massachusetts |
| 38 | William Forkin | 18 | Son | New Worker | Massachusetts |
| 39 | Joseph Forkin | 16 | Son | — | Massachusetts |
| 40 | George Forkin | 14 | Son | — | Massachusetts |
Related Census Records
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)