ML
Mary Lambert — 1940 US Census Record
Model Tree available1940 United States Federal Census · Providence-County, Rhode Island
Our Model Tree links this Mary Lambert across the 1920, 1930 and 1940 US Censuses in Providence-County, Rhode Island (XGBoost, ~Confirmed), with identified parents Benjamin & Agnes — first a daughter (b.~1918), then head of a 7-person household.
Age 22
b. ~1918
Female
Daughter
Born: Rhode Island
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Providence-County, Rhode Island |
| Surname | Lambert |
| Given Name | Mary L. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Rhode Island |
| 1935 Residence (City) | Lincoln |
| 1935 Residence (County) | Providence |
| Additional Details | |
| Class of Worker | No |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | Rhode Island |
| Birth Country | United States |
| Birthplace (normalized) | rhode island |
| Township / Ward | Lincoln |
| Est. Birth Year | ~1918 |
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 Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Lambert | Daughter | — | 22 | ~1918 |
| Virginia Lambert | Daughter | — | 16 | ~1924 |
| Benjamin Lambert | Head | — | 46 | ~1894 |
| Benjamin Lambert | Son | — | 20 | ~1920 |
| William Lambert | Son | — | 12 | ~1928 |
| Warren Lambert | Son | — | 18 | ~1922 |
| Agnes Lambert | Spouse | — | 43 | ~1897 |
Census Appearances
1920
Providence, Rhode …
Daughter, age 2
Providence, Rhode Island · implied b. ~1918 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lambert |
| Given Name | Mary E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Rhode Island |
| Father's Birthplace | Rhode Island |
| Mother's Birthplace | Rhode Island |
| Birth State | Rhode Island |
| Birth Country | United States |
| Birthplace (normalized) | rhode island |
1930
Providence, Rhode …
Daughter, age 12
Providence, Rhode Island · implied b. ~1918 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lambert |
| Given Name | Mary L |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Rhode Island |
| Father's Birthplace | Rhode Island |
| Mother's Birthplace | Rhode Island |
| Can Read/Write | Yes |
| Birth State | Rhode Island |
| Birth Country | United States |
| Birthplace (normalized) | rhode island |
1940
Providence-County, Rhode …
Daughter, age 22
Providence-County, Rhode Island · implied b. ~1918 — 7 household members
| Surname | Lambert |
| Given Name | Mary L. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Rhode Island |
| 1935 Residence (City) | Lincoln |
| 1935 Residence (County) | Providence |
| Class of Worker | No |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | Rhode Island |
| Birth Country | United States |
| Birthplace (normalized) | rhode island |
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 Mary Lambert across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Benjamin Lambert (~0.92 confidence) and mother Agnes Lambert (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Benjamin Lambert
b. ~1894
Source father
● Household
· direct · ~0.92
Mother
Agnes Lambert
b. ~1897
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Lambert
Daughter · 1940 · age 22 · b. ~1918 · Rhode Island
★ You are viewing this record
Sibling
William Lambert
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Virginia Lambert
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Benjamin Lambert
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Warren Lambert
Sibling · 1940 · age 18
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 — Providence-County, Rhode Island
Open full size
1940 US Federal Census — Providence-County, Rhode Island
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03766-00615)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Donald B. Seaton | 20 | Son | Laborer | Rhode Island |
| 42 | Ethel C. Seaton | 14 | Daughter | — | Rhode Island |
| 43 | Donald R. Maclean | 35 | Head | Dyer | Rhode Island |
| 44 | Elsie P. Maclean | 32 | Wife | — | Rhode Island |
| 45 | Meredith S. Maclean | 7 | Daughter | — | Rhode Island |
| 46 | Bruce S. Maclean | 5 | Son | — | Rhode Island |
| 47 | Anna Chase | 86 | Head | — | New Hampshire |
| 48 | Ida Susan Chase | 66 | Housekeeper | Housekeeper | Rhode Island |
| 49 | Charles W. Chase | 53 | Head | Purchasing Agent | Rhode Island |
| 50 | F. Evelyn Chase | 39 | Wife | — | Rhode Island |
| 51 | Nancy O. Chase | 5 | Daughter | — | Rhode Island |
| 52 | Carolyn A. Chase | 4 | Daughter | — | Rhode Island |
| 53 | Frederick W. Arnold | 70 | Head | Executive | Rhode Island |
| 54 | Mary H. Arnold | 67 | Wife | — | Rhode Island |
| 55 | Helen J. Arnold | 42 | Daughter | — | Rhode Island |
| 56 | Samuel A. Broadbent | 76 | Head | Laborer | England |
| 57 | Sarah Broadbent | 71 | Wife | — | England |
| 58 | Ethel Broadbent | 44 | Daughter | Saleswoman | England |
| 59 | Thomas M. Macneil | 33 | Head | Office Mgr. | Rhode Island |
| 60 | Edith A. Macneil | 32 | Wife | Bank Clerk | Rhode Island |
| 61 | Alexander Ogilvie | 56 | Head | Foreman | Scotland |
| 62 | Margaret T. Ogilvie | 52 | Wife | — | Scotland |
| 63 | David N.N. Ogilvie | 28 | Son | Folder | Scotland |
| 64 | George N.M.N. Ogilvie | 21 | Son | Shipping Clerk | Rhode Island |
| 65 | Douglas H.S. Ogilvie | 17 | Son | Mail Boy | Rhode Island |
| 66 | Barbara N.M.N. Ogilvie | 14 | Daughter | — | Rhode Island |
| 67 | Benjamin A. Lambert | 46 | Head | Supt. | Rhode Island |
| 68 | Agnes M. Lambert | 43 | Wife | — | Rhode Island |
| 69 | Mary L. Lambert THIS PERSON | 22 | Daughter | — | Rhode Island |
| 70 | Benjamin A. Jr. Lambert | 20 | Son | Office Clerk | Rhode Island |
| 71 | Warren J. Lambert | 18 | Son | Hauler | Rhode Island |
| 72 | Virginia F. Lambert | 16 | Daughter | — | Rhode Island |
| 73 | William F. Lambert | 12 | Son | — | Rhode Island |
| 74 | Maynard E. Judson | 23 | Head | Salesman | Rhode Island |
| 75 | Mildred Judson | 22 | Wife | — | Rhode Island |
| 76 | George T. Gilkenan | 39 | Head | Cashier | Rhode Island |
| 77 | Jennie F. Gilkenan | 39 | Wife | — | Massachusetts |
| 78 | George W. Gilkenan | 17 | Son | — | Rhode Island |
| 79 | Raymond J. Gilkenan | 15 | Son | Helper | Rhode Island |
| 80 | Jennie F. Gilkenan | 13 | Daughter | Childsnurse | Rhode Island |
Pedigree Summary
Mary + 4 siblings
Gen 1 · 2 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)