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Robert Lambert — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this Robert Lambert across the 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed) — first a son (b.~1929), then head of a 7-person household.
Age 11
b. ~1929
Male
Son
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | Lambert |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | City of Somerville |
| 1935 Residence (County) | Middlesex |
| Additional Details | |
| Highest Grade | No 3 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | City Of Somerville |
| Est. Birth Year | ~1929 |
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 Robert | Age | Birth yr |
|---|---|---|---|---|
| Anne Lambert | Daughter | — | 12 | ~1928 |
| Joseph Lambert | Head | — | 50 | ~1890 |
| Joseph Lambert | Son | — | 15 | ~1925 |
| Marie Lambert | Daughter | — | 13 | ~1927 |
| Amelia Lambert | Spouse | — | 46 | ~1894 |
| Richard Lambert | Son | — | 8 | ~1932 |
| Robert Lambert | Son | — | 11 | ~1929 |
Census Appearances
1930
Middlesex, Massachusetts
Son, age
Middlesex, Massachusetts · implied b. ~1930 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lambert |
| Given Name | Robert J |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 0 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Middlesex-County, Massachusetts
Son, age 11
Middlesex-County, Massachusetts · implied b. ~1929 — 7 household members
| Surname | Lambert |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | City of Somerville |
| 1935 Residence (County) | Middlesex |
| Highest Grade | No 3 |
| 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 Robert Lambert across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Robert Lambert
Son · 1940 · age 11 · b. ~1929 · Massachusetts
★ You are viewing this record
Sibling
Anne Lambert
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Richard Lambert
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Marie Lambert
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Lambert
Sibling · 1940 · age 15
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-t0627-01702-00824)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Henry Atkins | 17 | Son | Music Teacher | Massachusetts |
| 42 | Claire Atkins | 10 | Daughter | — | Massachusetts |
| 43 | Joseph Lambert | 50 | Head | Laborer | Massachusetts |
| 44 | Amelia Lambert | 46 | Wife | — | Massachusetts |
| 45 | Joseph Lambert | 15 | Son | — | Massachusetts |
| 46 | Marie Lambert | 13 | Daughter | — | Massachusetts |
| 47 | Anne Lambert | 12 | Daughter | — | Massachusetts |
| 48 | Robert Lambert THIS PERSON | 11 | Son | — | Massachusetts |
| 49 | Richard Lambert | 8 | Son | — | Massachusetts |
| 50 | Vincent Casassa | 47 | Head | Laborer | Italy |
| 51 | Rosa Casassa | 45 | Wife | — | Italy |
| 52 | Mary Casassa | 14 | Daughter | — | Massachusetts |
| 53 | Felice Casassa | 8 | Son | — | Massachusetts |
| 54 | Angelo Liccacori | 49 | Head | Mason | Italy |
| 55 | Frances Liccacori | 39 | Wife | — | Massachusetts |
| 56 | Edward Liccacori | 17 | Son | — | Massachusetts |
| 57 | Dorothy Liccacori | 15 | Daughter | — | Massachusetts |
| 58 | Inez Liccacori | 14 | Daughter | — | Massachusetts |
| 59 | Lorraine Liccacori | 12 | Daughter | — | Massachusetts |
| 60 | Francis Liccacori | 9 | Son | — | Massachusetts |
| 61 | Joseph Hanson | 31 | Head | Sign Painter | Massachusetts |
| 62 | Flora Hanson | 27 | Wife | — | Massachusetts |
| 63 | Elizabeth Harty | 86 | Head | — | Eire |
| 64 | Anthony Gazza | 24 | Head | Rubber Mixer | Massachusetts |
| 65 | Dorothy Gazza | 19 | Wife | — | Massachusetts |
| 66 | Robert Gazza | 1 | Son | — | Massachusetts |
| 67 | Claude Oasis | 35 | Head | Machine Operator | New York |
| 68 | Helen Oasis | 30 | Wife | — | New Hampshire |
| 69 | John Oasis | 74 | Father | — | New York |
| 70 | Richard Oasis | 11 | Son | — | Massachusetts |
| 71 | Claude Oasis | 10 | Son | — | Massachusetts |
| 72 | Robert Oasis | 8 | Son | — | Massachusetts |
| 73 | John Oasis | 6 | Son | — | Massachusetts |
| 74 | Beginning Of Block 589 End Of Block 888 | None | — | — | — |
| 75 | Alfred Goyette | 37 | Head | Packer | Massachusetts |
| 76 | Adela Goyette | 40 | Wife | Stitcher | Syria |
| 77 | Alfred Goyette | 14 | Son | — | Massachusetts |
| 78 | Joseph Battit | 46 | Head | Manager | Syria |
| 79 | Olga Battit | 42 | Wife | — | Syria |
| 80 | Agnes Battit | 15 | Daughter | — | 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)