LM
Lois Martin — 1940 US Census Record
Model Tree available1940 United States Federal Census · Douglas-County, Illinois
Our Model Tree links this Lois Martin across the 1920, 1930 and 1940 US Censuses in Douglas-County, Illinois (XGBoost, ~Confirmed), with identified parents Ralph & Ralph — first a daughter (b.~1917), then head of a 6-person household.
Age 23
b. ~1917
Female
Daughter
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Douglas-County, Illinois |
| Surname | Martin |
| Given Name | Lois |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Camargo Village |
| 1935 Residence (County) | Douglas |
| Additional Details | |
| Occupation | Nurse |
| Industry | Hospital Nurse |
| Class of Worker | PW |
| Hours Worked | 3 |
| Income (1939) | 36 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Nurse |
| Township / Ward | Camargo Village |
| Est. Birth Year | ~1917 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Lois | Age | Birth yr |
|---|---|---|---|---|
| Michel Martin | Son | — | 8 | ~1932 |
| Belle Martin | Spouse | — | 47 | ~1893 |
| Ralph Martin | Head | — | 53 | ~1887 |
| Earl Martin | Son | — | 15 | ~1925 |
| Lois Martin | Daughter | — | 23 | ~1917 |
| Ronald Martin | Son | — | 21 | ~1919 |
Census Appearances
1920
Douglas, Illinois
Daughter, age 4
Douglas, Illinois · implied b. ~1916 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martin |
| Given Name | Lois R |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Speaks English | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Douglas, Illinois
Daughter, age 13
Douglas, Illinois · implied b. ~1917 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martin |
| Given Name | Lois R. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| 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
Douglas-County, Illinois
Daughter, age 23
Douglas-County, Illinois · implied b. ~1917 — 6 household members
| Surname | Martin |
| Given Name | Lois |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Camargo Village |
| 1935 Residence (County) | Douglas |
| Occupation | Nurse |
| Industry | Hospital Nurse |
| Class of Worker | PW |
| Hours Worked | 3 |
| Income (1939) | 36 |
| Highest Grade | Hs 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 Lois Martin across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Ralph Martin (~0.92 confidence) and father Ralph Martin (~0.92 confidence) and father Ruben Martin (~0.92 confidence) and mother Belle Martin (~0.92 confidence) and mother Belle Martin (~0.92 confidence) and mother Ida Martin (~0.92 confidence). The pedigree spans 1 generation with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Ralph Martin
b. ~1887
Source father
● Household
· direct · ~0.92
Father
Ralph Martin
b. ~1886
Source father
● Household
· direct · ~0.92
Father
Ruben Martin
b. ~1886
Source father
● Household
· direct · ~0.92
Mother
Belle Martin
b. ~1893
Source mother
● Household
· direct · ~0.92
Mother
Belle Martin
b. ~1893
Source mother
● Household
· direct · ~0.92
Mother
Ida Martin
b. ~1893
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Lois Martin
Daughter · 1940 · age 23 · b. ~1917 · Illinois
★ You are viewing this record
Sibling
Earl Martin
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Michel Martin
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ronald Martin
Sibling · 1940 · age 21
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 — Douglas-County, Illinois
Open full size
1940 US Federal Census — Douglas-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00795-00191)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Opallee Akers | 31 | wife | — | Kentucky |
| 42 | Irie Marie Akers | 12 | daughter | — | Illinois |
| 43 | Jamie Maye Akers | 9 | daughter | — | Illinois |
| 44 | Martha Jilly Akers | 7 | daughter | — | Illinois |
| 45 | Nathan F. Akers | 6 | son | — | Illinois |
| 46 | James P. Akers | 3 | son | — | Illinois |
| 47 | Roy Lee Akers | 1 | son | — | Illinois |
| 48 | Edna Ruth Akers | 0 | daughter | — | Illinois |
| 49 | Ray D. Woods | 50 | head | Farmer | Illinois |
| 50 | Goldie Woods | 52 | wife | — | Kansas |
| 51 | Charles Woods | 24 | son | Laborer | Illinois |
| 52 | Amy C. Wiseman | 75 | head | — | Ohio |
| 53 | James E. Hardesty | 64 | lodger | — | Illinois |
| 54 | Arthur G. Holmes | 69 | head | Carpenter | Kentucky |
| 55 | Ellen S. Holmes | 68 | wife | — | Illinois |
| 56 | Frank B. Scott | 65 | head | Caretaker | Illinois |
| 57 | Ethel V. Scott | 53 | wife | — | Kentucky |
| 58 | Martha S. King | 65 | head | — | Illinois |
| 59 | Gladys J. King | 43 | daughter | Post Master | Illinois |
| 60 | Roy A. King | 49 | son | — | Illinois |
| 61 | Justin King | 50 | son | — | Illinois |
| 62 | John Bardrick | 60 | brother | — | Illinois |
| 63 | Phyllis King | 10 | daughter | — | Illinois |
| 64 | B. D. Hudson | 46 | head | Mail Carrier | Kentucky |
| 65 | Martha Hudson | 38 | wife | — | Illinois |
| 66 | Daren Hudson | 16 | son | — | Illinois |
| 67 | Ollie B. Ingram | 42 | head | — | Virginia |
| 68 | Robert Ingram | 20 | son | Laborer | Illinois |
| 69 | Galand Ingram | 18 | son | New Worker | Illinois |
| 70 | Philip F. Ingram | 16 | son | Laborer | Illinois |
| 71 | Elenor Ingram | 6 | daughter | — | Illinois |
| 72 | Nettie Wiles | 71 | head | — | Illinois |
| 73 | Mildred Wiles | 42 | daughter | Teacher | Illinois |
| 74 | Lowell Wiles | 32 | son | Laborer | Illinois |
| 75 | Ralph Martin | 53 | head | — | Illinois |
| 76 | Belle Martin | 47 | wife | — | Illinois |
| 77 | Lois Martin THIS PERSON | 23 | daughter | Nurse | Illinois |
| 78 | Ronald Martin | 21 | son | New Worker | Illinois |
| 79 | Earl Martin | 15 | son | — | Illinois |
| 80 | Michel Martin | 8 | son | — | Illinois |
Pedigree Summary
Lois + 3 siblings
Gen 1 · 6 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)