LM
Lawrence Martin — 1940 US Census Record
Model Tree available1940 United States Federal Census · Clay-County, Kansas
Our Model Tree links this Lawrence Martin across the 1920, 1930 and 1940 US Censuses in Clay-County, Kansas (XGBoost, ~Confirmed), with identified parents Fred & Ellen — first a head (b.~1903), then head of a 5-person household.
Age 37
b. ~1903
Male
Head
Born: Oklahoma
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Clay-County, Kansas |
| Surname | Martin |
| Given Name | Lawrence |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 37 |
| Marital Status | Married |
| Birthplace | Oklahoma |
| 1935 Residence (City) | Union Township |
| 1935 Residence (County) | Clay |
| Additional Details | |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 64 |
| Income (1939) | 0 |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth State | Oklahoma |
| Birth Country | United States |
| Birthplace (normalized) | oklahoma |
| Occupation | Farmer |
| Township / Ward | Union Township |
| Est. Birth Year | ~1903 |
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 |
|---|---|---|---|---|
| Lawrence Martin | Son | — | 9 | ~1931 |
| Rachel Martin | Daughter | — | 1 | ~1939 |
| Lawrence Martin | Head | — | 37 | ~1903 |
| Mina Martin | Spouse | — | 35 | ~1905 |
| Elizabeth Martin | Daughter | — | 5 | ~1935 |
Census Appearances
1920
Clay, Kansas
Son, age 14
Clay, Kansas · implied b. ~1906 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martin |
| Given Name | Lawrence |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Oklahoma |
| Father's Birthplace | Kansas |
| Mother's Birthplace | Kansas |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Oklahoma |
| Birth Country | United States |
| Birthplace (normalized) | oklahoma |
1930
Clay, Kansas
Head, age 24
Clay, Kansas · implied b. ~1906 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martin |
| Given Name | Lawrence F |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Married |
| Birthplace | Oklahoma |
| Age at First Marriage | 23 |
| Father's Birthplace | Kansas |
| Mother's Birthplace | Kansas |
| Occupation | Farmer |
| Industry | General Farm |
| Class of Worker | OA |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Birth State | Oklahoma |
| Birth Country | United States |
| Birthplace (normalized) | oklahoma |
1940
Clay-County, Kansas
Head, age 37
Clay-County, Kansas · implied b. ~1903 — 5 household members
| Surname | Martin |
| Given Name | Lawrence |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 37 |
| Marital Status | Married |
| Birthplace | Oklahoma |
| 1935 Residence (City) | Union Township |
| 1935 Residence (County) | Clay |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 64 |
| Income (1939) | 0 |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth State | Oklahoma |
| Birth Country | United States |
| Birthplace (normalized) | oklahoma |
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 Fred Martin (~0.92 confidence) and mother Ellen Martin (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Fred Martin
b. ~1878
Source father
● Household
· direct · ~0.92
Mother
Ellen Martin
b. ~1884
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Lawrence Martin
Head · 1940 · age 37 · b. ~1903 · Kansas
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Clay-County, Kansas
Open full size
1940 US Federal Census — Clay-County, Kansas
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01224-00782)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Harvey Schmale | 32 | Head | Farmer | Kansas |
| 2 | Verna Schmale | 27 | Wife | — | Kansas |
| 3 | Mavis Schmale | 3 | Daughter | — | Kansas |
| 4 | Leonard Carlson | 41 | Head | Farmer | Kansas |
| 5 | Ida E Carlson | 37 | Wife | — | Kansas |
| 6 | Merle D Carlson | 17 | Son | Farmer | Kansas |
| 7 | Stanley R Carlson | 13 | Son | — | Kansas |
| 8 | Leona Carlson | 11 | Daughter | — | Kansas |
| 9 | Naomi Carlson | 6 | Daughter | — | Kansas |
| 10 | Ernest Mason | 27 | Head | Road Overseer | Kansas |
| 11 | Marian Mason | 23 | Wife | — | Kansas |
| 12 | Cynthia Ann Mason | 5 | Daughter | — | Kansas |
| 13 | Jo Everett Mason | 3 | Son | — | Kansas |
| 14 | Elmer Schooley | 61 | Head | Farmer | Ohio |
| 15 | Bytha L Schooley | 55 | Wife | — | Kansas |
| 16 | Chris J Schooley | 33 | Son | Farmer | Kansas |
| 17 | Bertha Schooley | 23 | Daughter | — | Kansas |
| 18 | Leo Hainey | 52 | Head | Farmer | Kansas |
| 19 | Ella Hainey | 54 | Wife | — | Kansas |
| 20 | Helen Hainey | 18 | Daughter | House Maid | Kansas |
| 21 | Marjorie Hainey | 13 | Daughter | — | Kansas |
| 22 | Gerald Campbell | 50 | Head | Farmer | Iowa |
| 23 | Theresa Campbell | 50 | Wife | — | Kansas |
| 24 | Willard Campbell | 15 | Son | Farmer | Kansas |
| 25 | Theresa Campbell | 12 | Daughter | — | Kansas |
| 26 | George White | 70 | Head | Farmer | Kansas |
| 27 | L P Wylie | 47 | Head | Farmer | Kansas |
| 28 | Hester V Wylie | 46 | Wife | — | Kansas |
| 29 | David Wylie | 15 | Son | Farm | Kansas |
| 30 | Harold Master | 36 | Head | Farmer | Oklahoma |
| 31 | Miriam Master | 37 | Wife | — | Colorado |
| 32 | Jo Ann Master | 13 | Daughter | — | Kansas |
| 33 | Irma Master | 11 | Daughter | — | Kansas |
| 34 | Gerald Master | 5 | Son | — | Kansas |
| 35 | Lawrence Martin THIS PERSON | 37 | Head | Farmer | Oklahoma |
| 36 | Mina Martin | 35 | Wife | — | Kansas |
| 37 | Lawrence Martin | 9 | Son | — | Kansas |
| 38 | Elizabeth Martin | 5 | Daughter | — | Kansas |
| 39 | Rachel Martin | 1 | Daughter | — | Kansas |
| 40 | E Williams | 59 | Head | Farmer | Kansas |
Pedigree Summary
Lawrence
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)