RM
Ralph Martin — 1940 US Census Record
Model Tree available1940 United States Federal Census · Warren-County, Illinois
Our Model Tree links this Ralph Martin across the 1920, 1930 and 1940 US Censuses in Warren-County, Illinois (XGBoost, ~Confirmed), with identified parents Arthur & Arthur — first a son (b.~1916), then head of a 7-person household.
Age 24
b. ~1916
Male
Son
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Warren-County, Illinois |
| Surname | Martin |
| Given Name | Ralph |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Monmouth |
| 1935 Residence (County) | Warren |
| Additional Details | |
| Occupation | Farm Hand |
| Industry | agriculture |
| Class of Worker | PW |
| Hours Worked | 60 |
| Income (1939) | 480 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Farm Hand |
| Township / Ward | Monmouth |
| 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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Ralph | Age | Birth yr |
|---|---|---|---|---|
| Arthur Martin | Head | — | 51 | ~1889 |
| Lois Martin | Daughter | — | 21 | ~1919 |
| Robert Martin | Son | — | 12 | ~1928 |
| Gerald Martin | Son | — | 14 | ~1926 |
| Eufrosine Martin | Spouse | — | 51 | ~1889 |
| Ralph Martin | Son | — | 24 | ~1916 |
| Glen Martin | Son | — | 3 | ~1937 |
Census Appearances
1920
Warren, Illinois
Son, age 4
Warren, Illinois · implied b. ~1916 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martin |
| Given Name | Ralph |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Can Read | No |
| Can Write | No |
| Speaks English | No |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Warren, Illinois
Son, age 14
Warren, Illinois · implied b. ~1916 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martin |
| Given Name | Ralph |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Warren-County, Illinois
Son, age 24
Warren-County, Illinois · implied b. ~1916 — 7 household members
| Surname | Martin |
| Given Name | Ralph |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Monmouth |
| 1935 Residence (County) | Warren |
| Occupation | Farm Hand |
| Industry | agriculture |
| Class of Worker | PW |
| Hours Worked | 60 |
| Income (1939) | 480 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
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 Ralph Martin across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Arthur Martin (~0.92 confidence) and father Arthur Martin (~0.92 confidence) and mother Eufrosine Martin (~0.92 confidence) and mother Kathrine Martin (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Arthur Martin
b. ~1889
Source father
● Household
· direct · ~0.92
Father
Arthur Martin
b. ~1889
Source father
● Household
· direct · ~0.92
Mother
Eufrosine Martin
b. ~1889
Source mother
● Household
· direct · ~0.92
Mother
Kathrine Martin
b. ~1889
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Ralph Martin
Son · 1940 · age 24 · b. ~1916 · Illinois
★ You are viewing this record
Sibling
Lois Martin
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Martin
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Glen Martin
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Gerald Martin
Sibling · 1940 · age 14
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 — Warren-County, Illinois
Open full size
1940 US Federal Census — Warren-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00901-00445)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Emilie Johnson | 58 | Mother in law | House Keeper | Sweden |
| 2 | Nels Swanson | 51 | Head | Farm Operator | Illinois |
| 3 | Mabel Swanson | 53 | wife | — | Illinois |
| 4 | Selma Carlson | 65 | Head | — | Sweden |
| 5 | Walter Carlson | 37 | son | Farm Operator | Illinois |
| 6 | Ruth Carlson | 30 | daughter | Stenographer | Illinois |
| 7 | Carl Carlson | 28 | son | Farm Operator | Illinois |
| 8 | Eldon J. Belt | 54 | Head | Farm Operator | Iowa |
| 9 | Edna Belt | 48 | wife | — | Illinois |
| 10 | Wayne Belt | 19 | son | Laborer | Illinois |
| 11 | Earl Liby | 54 | Head | Farm Operator | Illinois |
| 12 | Birdie Liby | 53 | wife | — | Illinois |
| 13 | Benjamin Barron | 16 | lodger | Farm Hand | Illinois |
| 14 | Charles O. Paterson | 50 | Head | Farm Operator | Illinois |
| 15 | Pearl Paterson | 43 | wife | — | Illinois |
| 16 | Earl Paterson | 22 | son | — | Illinois |
| 17 | Marcella Paterson | 19 | daughter | Cashier | Illinois |
| 18 | Beauford Paterson | 16 | son | — | Illinois |
| 19 | Fred L. Davis | 60 | Head | Farm Operator | Illinois |
| 20 | Florence Davis | 53 | wife | — | Illinois |
| 21 | Lemar Bodenstedt | 19 | lodger | Farm Hand | Indiana |
| 22 | Ernest Moberg | 50 | Head | Farm Operator | Nebraska |
| 23 | Edna O. Moberg | 40 | wife | — | Illinois |
| 24 | Gilbert Moberg | 14 | son | — | Illinois |
| 25 | Leon Moberg | 12 | son | — | Illinois |
| 26 | John Moberg | 10 | son | — | Illinois |
| 27 | Alfred Mcmaster | 51 | Head | Farm Operator | Illinois |
| 28 | Minnie Mcmaster | 50 | wife | — | Illinois |
| 29 | Harold Mcmaster | 26 | son | Farm Operator | Illinois |
| 30 | Peter D. Shughart | 67 | Head | Farm Operator | Pennsylvania |
| 31 | Coral Shughart | 61 | wife | — | Illinois |
| 32 | Charles Shughart | 33 | son | Farm Hand | Illinois |
| 33 | Arthur D. Martin | 51 | Head | Farm Operator | Illinois |
| 34 | Eufrosine Martin | 51 | wife | — | Iowa |
| 35 | Ralph Martin THIS PERSON | 24 | son | Farm Hand | Illinois |
| 36 | Lois Martin | 21 | daughter | — | Illinois |
| 37 | Gerald Martin | 14 | son | — | Illinois |
| 38 | Robert Martin | 12 | son | — | Illinois |
| 39 | Glen Martin | 3 | son | — | Illinois |
| 40 | Gust Larson | 67 | Head | Farm Manager | Sweden |
Pedigree Summary
Ralph + 4 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)