JL
James Lambert — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Dallas, Texas
Our Model Tree links this James Lambert across the 1930 and 1940 US Censuses in Dallas, Texas (XGBoost, ~Confirmed) — first a son (b.~1910), then head of a 11-person household.
Age 20
b. ~1910
Male
Son
Born: Texas
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Dallas, Texas |
| Surname | Lambert |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Texas |
| Father's Birthplace | North Carolina |
| Mother's Birthplace | Mississippi |
| Additional Details | |
| Occupation | Mechanic |
| Industry | Auto repair |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Texas |
| Birth Country | United States |
| Birthplace (normalized) | texas |
| Occupation | Mechanic |
| Township / Ward | Dallas City |
| Est. Birth Year | ~1910 |
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.
11 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| Ralph Lambert | Son | — | 10 | ~1920 |
| James Lambert | Son | — | 20 | ~1910 |
| Roy Lambert | Son | — | 25 | ~1905 |
| Robert Lambert | Son | — | 34 | ~1896 |
| Robert Lambert | Head | — | 62 | ~1868 |
| Dan Lambert | Son | — | 16 | ~1914 |
| Mary Lambert | Spouse | — | 51 | ~1879 |
| Archie Lambert | Son | — | 23 | ~1907 |
| Dan Davis | Other | — | 8 | ~1922 |
| Lella Davis | Daughter | — | 28 | ~1902 |
| Jewell Lambert | Daughter | — | 8 | ~1922 |
Census Appearances
1930
Dallas, Texas
Son, age 20
Dallas, Texas · implied b. ~1910 — 11 household members
| Surname | Lambert |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Texas |
| Father's Birthplace | North Carolina |
| Mother's Birthplace | Mississippi |
| Occupation | Mechanic |
| Industry | Auto repair |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Texas |
| Birth Country | United States |
| Birthplace (normalized) | texas |
1940
Dallas-County, Texas
Head, age 29
Dallas-County, Texas · implied b. ~1911 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lambert |
| Given Name | J. H. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Married |
| Birthplace | Texas |
| 1935 Residence (City) | Dallas city |
| 1935 Residence (County) | Dallas |
| Occupation | Mechanic |
| Industry | Retail Garage |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 1044 |
| Highest Grade | No 8 |
| 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 James Lambert across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
James Lambert
Son · 1930 · age 20 · b. ~1910 · Texas
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Sibling
Dan Lambert
Sibling · 1930 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Archie Lambert
Sibling · 1930 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ralph Lambert
Sibling · 1930 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Roy Lambert
Sibling · 1930 · age 25
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Lambert
Sibling · 1930 · age 34
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Jewell Lambert
Sibling · 1930 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lella Davis
Sibling · 1930 · age 28
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
1930 US Federal Census — Dallas, Texas
Open full size
1930 US Federal Census — Dallas, Texas
Page Contents
14 people indexed on this census page (ia:1930:texascensus00reel2319:0685)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Grady C Summons | 36 | Head | Manager | Texas |
| 2 | Pauline Summons | 24 | Wife | — | Texas |
| 3 | A J Summons | 2 | Son | — | Texas |
| 4 | Robert Lambert | 62 | Head | Transfer | North Carolina |
| 5 | Mary L Lambert | 51 | Wife | — | Mississippi |
| 6 | Robert C Lambert | 34 | Son | Mechanic | Texas |
| 7 | Jewell Lambert | 8 | Daughter | — | Texas |
| 8 | Lella Davis | 28 | Daughter | Bookkeeper | Texas |
| 9 | Dan Jr Davis | 8 | Grandson | — | Texas |
| 10 | Roy Lambert | 25 | Son | Plumber | Texas |
| 11 | Archie Lambert | 23 | Son | Labour | Texas |
| 12 | James Lambert THIS PERSON | 20 | Son | Mechanic | Texas |
| 13 | Dan H Lambert | 16 | Son | Mechanic | Texas |
| 14 | Ralph Lambert | 10 | Son | — | Texas |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1930 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)