RL
Robert Lambert — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cass-County, Texas
Our Model Tree links this Robert Lambert across the 1930 and 1940 US Censuses in Cass-County, Texas (XGBoost, ~Confirmed) — first a son (b.~1923), then head of a 10-person household.
Age 17
b. ~1923
Male
Son
Born: Texas
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cass-County, Texas |
| Surname | Lambert |
| Given Name | Robert N. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Texas |
| 1935 Residence (City) | J. P. #7 |
| 1935 Residence (County) | Cass |
| Additional Details | |
| Occupation | Farm helper |
| Industry | Family worker |
| Class of Worker | NP |
| Hours Worked | 60 |
| Income (1939) | 0 |
| Highest Grade | 7 |
| 1935 Residence | Same place |
| Birth State | Texas |
| Birth Country | United States |
| Birthplace (normalized) | texas |
| Occupation | Farm Helper |
| Township / Ward | J P 7 |
| Est. Birth Year | ~1923 |
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.
10 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Robert | Age | Birth yr |
|---|---|---|---|---|
| Helen Lambert | Daughter | — | 19 | ~1921 |
| Robert Lambert | Son | — | 17 | ~1923 |
| Billy Lambert | Son | — | 13 | ~1927 |
| Sadie Lambert | Daughter | — | 10 | ~1930 |
| A Lambert | Head | — | 43 | ~1897 |
| Alger Lambert | Son | — | 4 | ~1936 |
| R Lambert | Son | — | 21 | ~1919 |
| Fred Lambert | Son | — | 6 | ~1934 |
| Madie Lambert | Daughter | — | 10 | ~1930 |
| Allie Lambert | Spouse | — | 39 | ~1901 |
Census Appearances
1930
Cass, Texas
Son, age 7
Cass, Texas · implied b. ~1923 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lambert |
| Given Name | Robert M. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Texas |
| Father's Birthplace | Texas |
| Mother's Birthplace | Texas |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Texas |
| Birth Country | United States |
| Birthplace (normalized) | texas |
1940
Cass-County, Texas
Son, age 17
Cass-County, Texas · implied b. ~1923 — 10 household members
| Surname | Lambert |
| Given Name | Robert N. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Texas |
| 1935 Residence (City) | J. P. #7 |
| 1935 Residence (County) | Cass |
| Occupation | Farm helper |
| Industry | Family worker |
| Class of Worker | NP |
| Hours Worked | 60 |
| Income (1939) | 0 |
| Highest Grade | 7 |
| 1935 Residence | Same place |
| Birth State | Texas |
| Birth Country | United States |
| Birthplace (normalized) | texas |
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 17 · b. ~1923 · Texas
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Sibling
Madie Lambert
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Fred Lambert
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
R Lambert
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Billy Lambert
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Sadie Lambert
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Helen Lambert
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Alger Lambert
Sibling · 1940 · age 4
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 — Cass-County, Texas
Open full size
1940 US Federal Census — Cass-County, Texas
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-04002-00781)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Auburn Lummus | 40 | Head | Common Day Labor | Texas |
| 42 | Blanche Lummus | 37 | Wife | — | Texas |
| 43 | S. W. Lummus | 15 | Son | — | Texas |
| 44 | Joe Bailey Lummus | 13 | Son | — | Texas |
| 45 | Teddy R. Lummus | 11 | Son | — | Texas |
| 46 | Bobby W. Lummus | 7 | Son | — | Texas |
| 47 | Bonnie S. Lummus | 5 | Daughter | — | Texas |
| 48 | Kenneth N. Lummus | 3 | Son | — | Texas |
| 49 | Betty J. Lummus | 0 | Daughter | — | Texas |
| 50 | A. Melvin Lambert | 43 | Head | Farmer | Texas |
| 51 | Allie R. Lambert | 39 | Wife | — | Texas |
| 52 | R. Franklin Lambert | 21 | Son | Farm Helper | Texas |
| 53 | Helen P. Lambert | 19 | Daughter | Post Office Asst. | Texas |
| 54 | Robert N. Lambert THIS PERSON | 17 | Son | Farm Helper | Texas |
| 55 | Billy C. Lambert | 13 | Son | — | Texas |
| 56 | Sadie F. Lambert | 10 | Daughter | — | Texas |
| 57 | Madie R. Lambert | 10 | Daughter | — | Texas |
| 58 | Fred A. Lambert | 6 | Son | — | Texas |
| 59 | Alger E. Lambert | 4 | Son | — | Texas |
| 60 | Alton Lummus | 33 | Head | Common Labor | Texas |
| 61 | Eula Lummus | 32 | Wife | — | Texas |
| 62 | C. Windal Lummus | 12 | Son | — | Texas |
| 63 | Clovis Lummus | 10 | Son | — | Texas |
| 64 | Christine Lummus | 6 | Daughter | — | Texas |
| 65 | Vernon Lummus | 4 | Son | — | Texas |
| 66 | Lois L. Roshery|Rosberry | 48 | Head | Farmer | Missouri |
| 67 | Essie A. Roshery|Rosberry | 40 | Wife | — | Alabama |
| 68 | Ernest A. Roshery|Rosberry | 22 | Son | Wood Hauler | Oklahoma |
| 69 | Velma A. Roshery|Rosberry | 14 | Daughter | — | Arkansas |
| 70 | Lavahn Roshery|Rosberry | 7 | Son | — | Texas |
| 71 | Loman L. Roshery|Rosberry | 4 | Son | — | Texas |
| 72 | Leelee L. Roshery|Rosberry | 0 | Son | — | Texas |
| 73 | Jesse R. Suggs | 36 | Head | Farmer And Wood Cutter | Arkansas |
| 74 | Anna M. Suggs | 22 | Wife | — | Texas |
| 75 | Robert M. Suggs | 13 | Son | — | Texas |
| 76 | Maudine Suggs | 11 | Daughter | — | Texas |
| 77 | Delbert Suggs | 6 | Son | — | Texas |
| 78 | Kenneth Suggs | 2 | Son | — | Texas |
| 79 | George M. Breen | 57 | Brother-in-law | Farm Hand | Arkansas |
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)