LM
Lawrence Martin — 1940 US Census Record
Model Tree available1940 United States Federal Census · Calcasieu-County, Louisiana
Our Model Tree links this Lawrence Martin across the 1920, 1930 and 1940 US Censuses in Calcasieu-County, Louisiana (XGBoost, ~Confirmed), with identified parents Albert & Albert — first a son (b.~1914), then head of a 5-person household.
Age 26
b. ~1914
Male
Son
Born: Louisiana
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Calcasieu-County, Louisiana |
| Surname | Martin |
| Given Name | Lawrence |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Louisiana |
| 1935 Residence (City) | outside Lake Charles |
| 1935 Residence (County) | Calcasieu |
| Additional Details | |
| Occupation | book keeper |
| Industry | oil field |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1041 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | Louisiana |
| Birth Country | United States |
| Birthplace (normalized) | louisiana |
| Occupation | Book Keeper |
| Township / Ward | Outside Lake Charles |
| Est. Birth Year | ~1914 |
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 Lawrence | Age | Birth yr |
|---|---|---|---|---|
| Dorothy Martin | Daughter | — | 15 | ~1925 |
| Ollie Martin | Head | — | 57 | ~1883 |
| Lawrence Martin | Son | — | 26 | ~1914 |
| Lucy Martin | Daughter | — | 29 | ~1911 |
| Marie Martin | Daughter | — | 17 | ~1923 |
Census Appearances
1920
Calcasieu, Louisiana
Son, age 5
Calcasieu, Louisiana · implied b. ~1915 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martin |
| Given Name | Lawrence |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Louisiana |
| Father's Birthplace | Louisiana |
| Mother's Birthplace | Louisiana |
| Birth State | Louisiana |
| Birth Country | United States |
| Birthplace (normalized) | louisiana |
1930
Calcasieu, Louisiana
Son, age 15
Calcasieu, Louisiana · implied b. ~1915 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martin |
| Given Name | Lawrence |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Louisiana |
| Father's Birthplace | Louisiana |
| Mother's Birthplace | Louisiana |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Louisiana |
| Birth Country | United States |
| Birthplace (normalized) | louisiana |
1940
Calcasieu-County, Louisiana
Son, age 26
Calcasieu-County, Louisiana · implied b. ~1914 — 5 household members
| Surname | Martin |
| Given Name | Lawrence |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Louisiana |
| 1935 Residence (City) | outside Lake Charles |
| 1935 Residence (County) | Calcasieu |
| Occupation | book keeper |
| Industry | oil field |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1041 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | Louisiana |
| Birth Country | United States |
| Birthplace (normalized) | louisiana |
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 Lawrence Martin across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Albert Martin (~0.92 confidence) and father Albert Martin (~0.92 confidence) and father Ollie Martin (~0.92 confidence) and mother Ephraim Martin (~0.92 confidence) and mother Ulycia Martin (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Albert Martin
b. ~1885
Source father
● Household
· direct · ~0.92
Father
Albert Martin
b. ~1875
Source father
● Household
· direct · ~0.92
Father
Ollie Martin
b. ~1883
Source father
● Household
· direct · ~0.92
Mother
Ephraim Martin
b. ~1882
Source mother
● Household
· direct · ~0.92
Mother
Ulycia Martin
b. ~1883
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Lawrence Martin
Son · 1940 · age 26 · b. ~1914 · Louisiana
★ You are viewing this record
Sibling
Dorothy Martin
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lucy Martin
Sibling · 1940 · age 29
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Marie Martin
Sibling · 1940 · age 17
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 — Calcasieu-County, Louisiana
Open full size
1940 US Federal Census — Calcasieu-County, Louisiana
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01390-00812)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Floyd Gani | 18 | son | — | Louisiana |
| 42 | Jack Gani | 17 | son | — | Louisiana |
| 43 | Irene Gani | 15 | daughter | — | Louisiana |
| 44 | Bernice Gani | 13 | daughter | — | Louisiana |
| 45 | Mary Louise Gani | 12 | daughter | — | Louisiana |
| 46 | William Gani | 11 | son | — | Louisiana |
| 47 | Bettie Ray Gani | 7 | daughter | — | Louisiana |
| 48 | Ollie Martin | 57 | head | — | Louisiana |
| 49 | Lucy Martin | 29 | daughter | Stenographer | Louisiana |
| 50 | Lawrence Martin THIS PERSON | 26 | son | Book Keeper | Louisiana |
| 51 | Marie Martin | 17 | daughter | Stenographer | Louisiana |
| 52 | Dorothy Martin | 15 | daughter | — | Louisiana |
| 53 | D. L. Miller | 35 | head | Barber | Louisiana |
| 54 | Hilda Miller | 30 | wife | — | Louisiana |
| 55 | Judith Mc Cain | 53 | head | — | Indiana |
| 56 | Dorothy Clark | 16 | daughter | — | Louisiana |
| 57 | Joseph J. Daggett | 27 | son in law | Truck Driver | Louisiana |
| 58 | Judith Daggett | 27 | daughter | — | Louisiana |
| 59 | Dorothy Daggett | 4 | daughter | — | Louisiana |
| 60 | Barbara Morgan | 7 | daughter | — | Louisiana |
| 61 | William Morgan | 5 | son | — | Louisiana |
| 62 | J. W. Abercrombie | 33 | head | Automobile Mechanic | Texas |
| 63 | Ruth Abercrombie | 28 | wife | — | Louisiana |
| 64 | Lettie Abercrombie | 5 | daughter | — | Louisiana |
| 65 | Wayne Abercrombie | 4 | son | — | Louisiana |
| 66 | Clark Abercrombie | 1 | son | — | Louisiana |
| 67 | Mitchel Demaretz | 37 | head | Attendant | Louisiana |
| 68 | Pauline Demaretz | 33 | wife | — | Louisiana |
| 69 | Mitchel C. Demaretz | 13 | son | — | Louisiana |
| 70 | Elaine Demaretz | 10 | daughter | — | Louisiana |
| 71 | Pauline Broussard | 74 | mother in law | — | Louisiana |
| 72 | Steve Berthelot | 40 | head | Line Man | Louisiana |
| 73 | Alberta Berthelot | 34 | wife | — | Louisiana |
| 74 | Bertie May Berthelot | 5 | daughter | — | Louisiana |
| 75 | Lee Berthelot | 36 | brother | Laborer | Louisiana |
| 76 | Martha Alliot | 34 | head | — | Missouri |
| 77 | Paul Alliot | 11 | son | — | New Mexico |
| 78 | Martha Alliot | 9 | daughter | — | Arizona |
| 79 | Gaspard Authement | 44 | head | Truck Driver | Louisiana |
| 80 | Evena Authement | 42 | wife | — | Louisiana |
Related Census Records
Pedigree Summary
Lawrence + 3 siblings
Gen 1 · 5 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)