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William Long — 1940 US Census Record
Model Tree available1940 United States Federal Census · Essex-County, Massachusetts
Our Model Tree links this William Long across the 1920, 1930 and 1940 US Censuses in Essex-County, Massachusetts (XGBoost, ~Confirmed), with identified parents Henry & Edwin — first a son (b.~1913), then head of a 7-person household.
Age 27
b. ~1913
Male
Son
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Essex-County, Massachusetts |
| Surname | Long |
| Given Name | William J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 27 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Lynn city |
| 1935 Residence (County) | Essex |
| Additional Details | |
| Occupation | Driver |
| Industry | Laundry |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 1040 |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Driver |
| Township / Ward | Lynn City |
| Est. Birth Year | ~1913 |
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 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| Karoline Long | Daughter | — | 27 | ~1913 |
| Edwin Long | Head | — | 56 | ~1884 |
| Caroline Long | Other | — | 3 | ~1937 |
| William Long | Other | — | 1 | ~1939 |
| Edwin Long | Son | — | 32 | ~1908 |
| William Long | Son | — | 27 | ~1913 |
| Mary Long | Spouse | — | 48 | ~1892 |
Census Appearances
1920
Essex, Massachusetts
Son, age 3
Essex, Massachusetts · implied b. ~1917 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Long |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Essex, Massachusetts
Son, age 13
Essex, Massachusetts · implied b. ~1917 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Long |
| Given Name | William T |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Essex-County, Massachusetts
Son, age 27
Essex-County, Massachusetts · implied b. ~1913 — 7 household members
| Surname | Long |
| Given Name | William J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 27 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Lynn city |
| 1935 Residence (County) | Essex |
| Occupation | Driver |
| Industry | Laundry |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 1040 |
| Highest Grade | 8 |
| 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 William Long across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Henry Long (~0.92 confidence) and father Edwin Long (~0.92 confidence) and father James Long (~0.92 confidence) and mother Mary Long (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Henry Long
b. ~1889
Source father
● Household
· direct · ~0.92
Father
Edwin Long
b. ~1884
Source father
● Household
· direct · ~0.92
Father
James Long
b. ~1890
Source father
● Household
· direct · ~0.92
Mother
Mary Long
b. ~1892
Source mother
● Household
· direct · ~0.92
This person
Anchor record
William Long
Son · 1940 · age 27 · b. ~1913 · Massachusetts
★ You are viewing this record
Sibling
Karoline Long
Sibling · 1940 · age 27
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edwin Long
Sibling · 1940 · age 32
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 — Essex-County, Massachusetts
Open full size
1940 US Federal Census — Essex-County, Massachusetts
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01696-00088)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | George Clark | 57 | Head | Fireman | Massachusetts |
| 2 | Mary Clark | 57 | Wife | — | Ireland |
| 3 | Son Owen | None | M | Golf Course | — |
| 4 | Daughter Alice | None | F | Leather Co. | — |
| 5 | Daughter Catherine | None | F | Cleaning & Dyeing | — |
| 6 | Daughter Rita | None | F | Radio Tube Co. | — |
| 7 | Son Robert | None | M | Grocery Store | — |
| 8 | Daughter Ethel | None | F | — | — |
| 9 | James Casey | 70 | Head | — | Massachusetts |
| 10 | Mary Casey | 66 | Wife | — | Massachusetts |
| 11 | John Casey | 33 | Son | Packer | Massachusetts |
| 12 | Edward Fitzgerald | 75 | Head | — | Maine |
| 13 | Mary Fitzgerald | 79 | Sister | — | Maine |
| 14 | Charles Doucette | 28 | Head | Clerk | Massachusetts |
| 15 | Bernice Doucette | 27 | Wife | — | Massachusetts |
| 16 | Charles Doucette | 8 | Son | — | Massachusetts |
| 17 | Christine Doucette | 7 | Daughter | — | Massachusetts |
| 18 | Elizabeth Doucette | 7 | Daughter | — | Massachusetts |
| 19 | John R. Marshall | 65 | Head | Laborer | Massachusetts |
| 20 | Bernice Marshall | 64 | Wife | — | Massachusetts |
| 21 | Joseph Kavanagh | 42 | Head | Fireman | Massachusetts |
| 22 | Catherine Kavanagh | 39 | Wife | — | Massachusetts |
| 23 | Rita Kavanagh | 17 | Daughter | — | Massachusetts |
| 24 | Joseph Jr. Kavanagh | 15 | Son | — | Massachusetts |
| 25 | Charles Kavanagh | 10 | Son | — | Massachusetts |
| 26 | Richard Kavanagh | 10 | Son | — | Massachusetts |
| 27 | James Heaney | 30 | Boarder | Clerk | Massachusetts |
| 28 | Anna Latrobe | 56 | Head | — | Russia |
| 29 | Ethel Latrobe | 22 | Daughter | Hairdresser | Massachusetts |
| 30 | Joseph Greenstein | 28 | Son-in-law | Bicycle Repairer | Massachusetts |
| 31 | Minnie Greenstein | 28 | Daughter | Salesgirl | Massachusetts |
| 32 | Edwin J. Long | 56 | Head | Watchman | Massachusetts |
| 33 | Mary A. Long | 48 | Wife | — | Massachusetts |
| 34 | Edwin F. Jr. Long | 32 | Son | Assembler | Massachusetts |
| 35 | William J. Long THIS PERSON | 27 | Son | Driver | Massachusetts |
| 36 | Karoline Long | 27 | Daughter | — | Massachusetts |
| 37 | Caroline Long | 3 | Grand-daughter | — | Massachusetts |
| 38 | William Long | 1 | Grand-son | — | Massachusetts |
| 39 | Leonard Rinkcett | 75 | Head | — | Maine |
| 40 | Pearl D. Rinkcett | 72 | Wife | Waitress | Maine |
Pedigree Summary
William + 2 siblings
Gen 1 · 4 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)