MS
Martin Smith — 1940 US Census Record
Model Tree available1940 United States Federal Census · Los-Angeles-County, California
Our Model Tree links this Martin Smith across the 1920, 1930 and 1940 US Censuses in Los-Angeles-County, California (XGBoost, ~Confirmed), with identified parents Chas & Clyde — first a son (b.~1916), then head of a 8-person household.
Age 24
b. ~1916
Male
Son
Born: Colorado
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Los-Angeles-County, California |
| Surname | Smith |
| Given Name | Martin |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Married |
| Birthplace | Colorado |
| 1935 Residence (City) | Compton City |
| 1935 Residence (County) | Los Angeles |
| Additional Details | |
| Occupation | drop hammer man |
| Industry | aircraft factory |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1350 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
| Occupation | Drop Hammer Man |
| Township / Ward | Compton City |
| Est. Birth Year | ~1916 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Martin | Age | Birth yr |
|---|---|---|---|---|
| Clyde Smith | Head | — | 49 | ~1891 |
| Roy Smith | Son | — | 12 | ~1928 |
| Martin Smith | Son | — | 24 | ~1916 |
| Thelma Smith | Other | — | 27 | ~1913 |
| Linda Smith | Other | — | 2 | ~1938 |
| Clyde Smith | Son | — | 23 | ~1917 |
| Frances Smith | Daughter | — | 17 | ~1923 |
| Mary Smith | Spouse | — | 42 | ~1898 |
Census Appearances
1920
Los Angeles, …
Son, age 5
Los Angeles, California · implied b. ~1915 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Smith |
| Given Name | Melvin C. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Colorado |
| Father's Birthplace | Colorado |
| Mother's Birthplace | Colorado |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
Son, age 15
Los Angeles, California · implied b. ~1915 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Smith |
| Given Name | Melvin E |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Colorado |
| Father's Birthplace | Colorado |
| Mother's Birthplace | Colorado |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
1940
Los-Angeles-County, California
Son, age 24
Los-Angeles-County, California · implied b. ~1916 — 8 household members
| Surname | Smith |
| Given Name | Martin |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Married |
| Birthplace | Colorado |
| 1935 Residence (City) | Compton City |
| 1935 Residence (County) | Los Angeles |
| Occupation | drop hammer man |
| Industry | aircraft factory |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1350 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
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 Martin Smith across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Chas Smith (~0.92 confidence) and father Clyde Smith (~0.92 confidence) and mother Grace Smith (~0.92 confidence) and mother Mary Smith (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Chas Smith
b. ~1886
Source father
● Household
· direct · ~0.92
Father
Clyde Smith
b. ~1891
Source father
● Household
· direct · ~0.92
Mother
Grace Smith
b. ~1891
Source mother
● Household
· direct · ~0.92
Mother
Mary Smith
b. ~1898
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Martin Smith
Son · 1940 · age 24 · b. ~1916 · California
★ You are viewing this record
Sibling
Roy Smith
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Frances Smith
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Clyde Smith
Sibling · 1940 · age 23
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 — Los-Angeles-County, California
Open full size
1940 US Federal Census — Los-Angeles-County, California
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00223-00178)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Harold W | 24 | son | Assembler | Oklahoma |
| 42 | Lloyd G | 22 | son | Clerk | Oklahoma |
| 43 | Wanda | 20 | daughter | Beauty Operator | Oklahoma |
| 44 | Peter Woods | 44 | head | Carpenter | Montana |
| 45 | Ida Woods | 40 | wife | — | Arizona |
| 46 | John B Woods | 24 | son | Carpenter Helper | Utah |
| 47 | Ralph M Woods | 20 | son | — | Idaho |
| 48 | Grant Woods | 15 | son | — | California |
| 49 | Ben E Jackson | 51 | head | — | Missouri |
| 50 | Clyde G Smith | 49 | head | Jeweler | Minnesota |
| 51 | Mary E Smith | 42 | wife | — | Ohio |
| 52 | Martin Smith THIS PERSON | 24 | son | Drop Hammer Man | Colorado |
| 53 | Thelma C Smith | 27 | daughter-in-law | — | Texas |
| 54 | Linda S Smith | 2 | granddaughter | — | California |
| 55 | Clyde Smith | 23 | son | A. Clerk | Colorado |
| 56 | Frances Smith | 17 | daughter | — | Colorado |
| 57 | Roy Smith | 12 | son | — | Florida |
| 58 | Roscoe H Grogan | 39 | head | Truck Driver | Oklahoma |
| 59 | Florence E Grogan | 36 | wife | — | Arizona |
| 60 | Marvin H Grogan | 16 | son | — | California |
| 61 | Alvin R Grogan | 13 | son | — | California |
| 62 | Joyce M Grogan | 12 | daughter | — | California |
| 63 | John R Grogan | 5 | son | — | California |
| 64 | Weldon M Sams | 24 | brother-in-law | Truck Driver | Arizona |
| 65 | Lawrence F Vick | 48 | head | Carpenter | Nebraska |
| 66 | Lois V Vick | 38 | wife | — | Iowa |
| 67 | Gerald C Vick | 20 | son | Meter Man | Nebraska |
| 68 | Harold R Vick | 18 | son | Mechanic Helper | Nebraska |
| 69 | Ronald L Vick | 16 | son | — | Nebraska |
| 70 | Darlene E Vick | 12 | daughter | — | Nebraska |
| 71 | George G Marshall | 56 | head | Brakeman | New Hampshire |
| 72 | Maude E Marshall | 49 | wife | — | Massachusetts |
| 73 | Harriet L Marshall | 60 | mother-in-law | Housekeeper | Massachusetts |
| 74 | Joseph F Penning | 53 | head | Welder | Ohio |
| 75 | Mabel Penning | 50 | wife | — | Iowa |
| 76 | Gene Penning | 26 | son | Welder | Iowa |
| 77 | Emery E Walls | 51 | head | Salesman | Colorado |
| 78 | Mabel Walls | 48 | wife | — | Oklahoma |
| 79 | Eurgean Walls | 14 | daughter | — | California |
| 80 | House Venton | 34 | head | Play Ground Supervisor | California |
Related Census Records
Pedigree Summary
Martin + 3 siblings
Gen 1 · 4 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)