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Bertha Martin — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Ford-County, Illinois
Our Model Tree links this Bertha Martin across the 1920, 1930 and 1940 US Censuses in Ford-County, Illinois (XGBoost, ~Confirmed) — first a head (b.~1888), then head of a 6-person household.
Age 52
b. ~1888
Female
Head
Born: Indiana
Widowed
1940 Census Record Details
| Census Year | 1940 |
| Location | Ford-County, Illinois |
| Surname | Martin |
| Given Name | Bertha |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 52 |
| Marital Status | Widowed |
| Birthplace | Indiana |
| 1935 Residence (City) | Panton City |
| 1935 Residence (County) | Lake |
| Additional Details | |
| Occupation | Laundress |
| Industry | Own Home |
| Class of Worker | OA |
| Hours Worked | 40 |
| Income (1939) | 86 |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
| Occupation | Laundress |
| Township / Ward | Panton City |
| Est. Birth Year | ~1888 |
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 Bertha | Age | Birth yr |
|---|---|---|---|---|
| Helen Martin | Daughter | — | 19 | ~1921 |
| Ruth Martin | Daughter | — | 14 | ~1926 |
| Bertha Martin | Head | — | 52 | ~1888 |
| Julia Martin | Daughter | — | 16 | ~1924 |
| Harold Martin | Son | — | 17 | ~1923 |
| Carl Martin | Son | — | 12 | ~1928 |
Census Appearances
1920
Ford, Illinois
Spouse, age 31
Ford, Illinois · implied b. ~1889 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martin |
| Given Name | Bertha |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| Birthplace | Indiana |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Indiana |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1930
Ford, Illinois
Spouse, age 42
Ford, Illinois · implied b. ~1888 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martin |
| Given Name | Bertha |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 42 |
| Marital Status | Married |
| Birthplace | Indiana |
| Age at First Marriage | 19 |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Indiana |
| Can Read/Write | Yes |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1940
Ford-County, Illinois
Head, age 52
Ford-County, Illinois · implied b. ~1888 — 6 household members
| Surname | Martin |
| Given Name | Bertha |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 52 |
| Marital Status | Widowed |
| Birthplace | Indiana |
| 1935 Residence (City) | Panton City |
| 1935 Residence (County) | Lake |
| Occupation | Laundress |
| Industry | Own Home |
| Class of Worker | OA |
| Hours Worked | 40 |
| Income (1939) | 86 |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
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 Bertha Martin across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Bertha Martin
Head · 1940 · age 52 · b. ~1888 · Illinois
★ 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 — Ford-County, Illinois
Open full size
1940 US Federal Census — Ford-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00802-00273)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Ray Vance | 28 | Head | Assistant Engineer | Illinois |
| 2 | Josephine Vance | 27 | Wife | — | Illinois |
| 3 | Joseph E Vance | 6 | Son | — | Illinois |
| 4 | Harvey R Vance | 2 | Son | — | Illinois |
| 5 | Chas R Cottrell | 41 | Head | Manager Imposing | Kentucky |
| 6 | Mildred Cottrell | 41 | Wife | — | Kentucky |
| 7 | Richard Cottrell | 16 | Son | — | Kentucky |
| 8 | Robert Cottrell | 12 | Son | — | Kentucky |
| 9 | Mildred Cottrell | 6 | Daughter | — | Kentucky |
| 10 | Earl Sperry | 43 | Head | Mechanic | Iowa |
| 11 | Emma Sperry | 41 | Wife | — | Kansas |
| 12 | Bonnie J Sperry | 13 | Daughter | — | Missouri |
| 13 | Harvey L Sperry | 10 | Son | — | Iowa |
| 14 | Donald H Sperry | 7 | Son | — | Iowa |
| 15 | Sandra J Sperry | 3 | Daughter | — | Iowa |
| 16 | Arthur Hofois | Hofais | 28 | Head | Carpenter | Illinois |
| 17 | Dorothy Hofois | Hofais | 27 | Wife | — | Illinois |
| 18 | Patricia Hofois | Hofais | 5 | Daughter | — | Illinois |
| 19 | Mary Ann Hofois | Hofais | 3 | Daughter | — | Illinois |
| 20 | Hans Rasmussen | 51 | Head | Salesman | Denmark |
| 21 | Anna Rasmussen | 51 | Wife | — | Denmark |
| 22 | Frank Rasmussen | 21 | Son | Salesman | Illinois |
| 23 | John Rasmussen | 24 | Son | Salesman | Illinois |
| 24 | Anthony Thompson | 63 | Head | — | Illinois |
| 25 | Sarah Thompson | 60 | Wife | — | Illinois |
| 26 | Bertha Martin THIS PERSON | 52 | Head | Laundress | Indiana |
| 27 | Helen Martin | 19 | Daughter | Receptionist | Illinois |
| 28 | Harold Martin | 17 | Son | — | Illinois |
| 29 | Julia Martin | 16 | Daughter | — | Illinois |
| 30 | Ruth Martin | 14 | Daughter | — | Illinois |
| 31 | Carl Martin | 12 | Son | — | Illinois |
| 32 | Ben Anderson | 55 | Head | Tool Repairer | Illinois |
| 33 | J Floyd Nostrain | Nostram | 44 | Head | Salesman | Illinois |
| 34 | Leota Nostrain | Nostram | 41 | Wife | — | Illinois |
| 35 | Carl Shina | 60 | Head | Shoe Repairing | Sweden |
| 36 | Frieda M Shina | 58 | Wife | — | Sweden |
| 37 | Hugo E Shina | 20 | Son | Shoe Repairing | Illinois |
| 38 | Blanche Shina | 20 | Daughter-in-law | — | Colorado |
| 39 | Audrey Shina | 13 | Granddaughter | — | Colorado |
| 40 | Carl B Shina | 4 | Grandson | — | Colorado |
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)