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William Lambert — 1940 US Census Record
Model Tree available1940 United States Federal Census · Essex-County, Massachusetts
Our Model Tree links this William Lambert across the 1920, 1930 and 1940 US Censuses in Essex-County, Massachusetts (XGBoost, ~Confirmed), with identified parents Alphonsus & Mary — first a son (b.~1911), then head of a 5-person household.
Age 29
b. ~1911
Male
Son
Born: Massachusetts
Separated
1940 Census Record Details
| Census Year | 1940 |
| Location | Essex-County, Massachusetts |
| Surname | Lambert |
| Given Name | William A. (Ab) |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Separated |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Lynn city |
| 1935 Residence (County) | Essex |
| Additional Details | |
| Class of Worker | 0 |
| Hours Worked | 0 |
| Highest Grade | C 2 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Lynn 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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| Virginia Keith | Daughter | — | 29 | ~1911 |
| Mary Lambert | Head | — | 67 | ~1873 |
| Kenneth Keith | Other | — | 32 | ~1908 |
| William Lambert | Son | — | 29 | ~1911 |
| Alphonse Lambert | Son | — | 68 | ~1872 |
Census Appearances
1920
Essex, Massachusetts
Son, age 9
Essex, Massachusetts · implied b. ~1911 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lambert |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 9 |
| 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 19
Essex, Massachusetts · implied b. ~1911 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lambert |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Occupation | Bus Boy |
| Industry | Restaurant |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Essex-County, Massachusetts
Son, age 29
Essex-County, Massachusetts · implied b. ~1911 — 5 household members
| Surname | Lambert |
| Given Name | William A. (Ab) |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Separated |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Lynn city |
| 1935 Residence (County) | Essex |
| Class of Worker | 0 |
| Hours Worked | 0 |
| Highest Grade | C 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 William Lambert across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Alphonsus Lambert (~0.92 confidence) and mother Mary Lambert (~0.46 confidence) and mother Mary Lambert (~0.92 confidence). The pedigree spans 2 generations with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.77
Father
Alphonsus Lambert
b. ~1872
Source father
● Household
· direct · ~0.92
Mother
Mary Lambert
b. ~1873
Source father>mother
● Household
· direct · ~0.46
Mother
Mary Lambert
b. ~1873
Source mother
● Household
· direct · ~0.92
This person
Anchor record
William Lambert
Son · 1940 · age 29 · b. ~1911 · Massachusetts
★ You are viewing this record
Sibling
Virginia Keith
Sibling · 1940 · age 29
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Alphonse Lambert
Sibling · 1940 · age 68
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-t0627-01695-00521)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | John W. Horgan | 65 | Head | — | Massachusetts |
| 2 | Leonora Horgan | 54 | Daughter | Laborer | Massachusetts |
| 3 | William E. Downes | 60 | Head | Vamper | Maine |
| 4 | Elmer A. Downes | 56 | Son | Mechanic | Massachusetts |
| 5 | Clifford (Ab) Miner | 33 | Step-son | Seaman | Massachusetts |
| 6 | Mary A. Lambert | 67 | Head | — | Massachusetts |
| 7 | Alphonse J. Lambert | 68 | Son | Tax Collector | Massachusetts |
| 8 | Virginia Keith | 29 | Daughter | — | Massachusetts |
| 9 | Kenneth J. Keith | 32 | Son-in-law | Clerk | Massachusetts |
| 10 | William A. (Ab) Lambert THIS PERSON | 29 | Son | — | Massachusetts |
| 11 | Joaquin Neves | 24 | Head | Embalmer App. | Massachusetts |
| 12 | Joseph Tavares | 44 | Head | Chef | Cape Verde Isl. |
| 13 | Rose Tavares | 41 | Wife | — | Cape Verde Isl. |
| 14 | Louis Neves | 21 | Step-son | Helper | Massachusetts |
| 15 | Dominga Neves | 21 | Step-daughter | Domestic | Massachusetts |
| 16 | Manuel Neves | 19 | Step-son | Laborer | Massachusetts |
| 17 | Dorothy Tavares | 13 | Daughter | — | Massachusetts |
| 18 | Geneva Tavares | 10 | Daughter | — | Massachusetts |
| 19 | Henry Tavares | 3 | Son | — | Massachusetts |
| 20 | Annabel Storey | 35 | Head | — | Massachusetts |
| 21 | Charles H. Storey | 39 | Head | Guard | Canada-Eng |
| 22 | Warren P. Storey | 14 | Son | — | Massachusetts |
| 23 | Evelyn T. Storey | 13 | Daughter | — | Massachusetts |
| 24 | Vernon H. Storey | 7 | Son | — | Massachusetts |
| 25 | Gary M. Storey | 5 | Son | — | Massachusetts |
| 26 | Mary A. Storey | 72 | Mother | — | Canada-Eng |
| 27 | William P. (Ab) Storey | 46 | Brother | Laborer | Massachusetts |
| 28 | Edward Richardson | 25 | Head | Assembler | Massachusetts |
| 29 | Eunice Richardson | 21 | Wife | Domestic | Massachusetts |
| 30 | Marion Richardson | 4 | Daughter | — | Massachusetts |
| 31 | This Space Blank Due To Misinformation | None | — | — | — |
| 32 | Esther Carney | 61 | Head | Hand Presser | Massachusetts |
| 33 | Mary F. Collins | 58 | Sister | — | Massachusetts |
| 34 | Edward F. Collins | 58 | Bro-in-law | Laborer | Massachusetts |
| 35 | Edward F. Jr. Collins | 16 | Nephew | — | Massachusetts |
| 36 | Geo. C. Harrington | 44 | Head | Chauffer | Massachusetts |
| 37 | Marion R. Harrington | 40 | Wife | Stitcher | Massachusetts |
| 38 | Caroline A. Harrington | 21 | Daughter | Nursing | Massachusetts |
| 39 | George C. Jr. Harrington | 19 | Son | Clerk | Massachusetts |
| 40 | Donald L. Harrington | 15 | Son | — | Massachusetts |
Related Census Records
Pedigree Summary
William + 2 siblings
Gen 1 · 2 parents
~0.92
Gen 2 · 1 grandparents
~0.46
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)