HM
Helen Martin — 1940 US Census Record
Model Tree available1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Helen Martin across the 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed), with identified parents Lyman & Aimee — first a daughter (b.~1912), then head of a 9-person household.
Age 28
b. ~1912
Female
Daughter
Born: Illinois
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Martin |
| Given Name | Helen |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 28 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Class of Worker | 0 |
| Hours Worked | 0 |
| Highest Grade | H 2 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Chicago |
| Est. Birth Year | ~1912 |
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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Helen | Age | Birth yr |
|---|---|---|---|---|
| Helen Martin | Daughter | — | 28 | ~1912 |
| David Pate | Head | — | 56 | ~1884 |
| Patricia Martin | Other | — | 8 | ~1932 |
| Ellen Scourie | Other | — | 80 | ~1860 |
| Harry Martin | Other | — | 33 | ~1907 |
| Harry Martin | Other | — | 6 | ~1934 |
| Margie Meyer | Other | — | 23 | ~1917 |
| Helen Martin | Other | — | 1 | ~1939 |
| Mary Pate | Spouse | — | 55 | ~1885 |
Census Appearances
1920
Cook, Illinois
Daughter, age 6
Cook, Illinois · implied b. ~1914 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martin |
| Given Name | Helen |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 6 |
| Marital Status | Single |
| Birthplace | Illinois |
| Naturalization Status | Alien |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Cook, Illinois
Daughter, age 17
Cook, Illinois · implied b. ~1913 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martin |
| Given Name | Helen |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Daughter, age 28
Cook-County, Illinois · implied b. ~1912 — 9 household members
| Surname | Martin |
| Given Name | Helen |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 28 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Class of Worker | 0 |
| Hours Worked | 0 |
| Highest Grade | H 2 |
| 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 Helen Martin across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Lyman Martin (~0.92 confidence) and mother Aimee Martin (~0.92 confidence) and father David Pate (~0.92 confidence) and mother Mary Pate (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Lyman Martin
b. ~1875
Source father
● Household
· direct · ~0.92
Mother
Aimee Martin
b. ~1878
Source mother
● Household
· direct · ~0.92
Father
David Pate
b. ~1884
Source father
● Household
· direct · ~0.92
Mother
Mary Pate
b. ~1885
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Helen Martin
Daughter · 1940 · age 28 · b. ~1912 · 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 — Cook-County, Illinois
Open full size
1940 US Federal Census — Cook-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00993-00473)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Carol Hansen | 3 | Daughter | — | Illinois |
| 2 | Clara Hand | 60 | Head | — | Illinois |
| 3 | Emma Hand | 35 | Daughter | Office Work | Illinois |
| 4 | Catherine Pinn | 57 | Head | — | Illinois |
| 5 | Lillian Pinn | 24 | Daughter | Assembler | Illinois |
| 6 | Robert Pinn | 22 | Son | Estimator | Illinois |
| 7 | Geraldine Pinn | 19 | Daughter | Beauty Operator | Illinois |
| 8 | Russell Pinn | 17 | Son | — | Illinois |
| 9 | Jens Henrichsen | 71 | Head | — | Denmark |
| 10 | Agnes Henrichsen | 42 | Daughter | Teacher | Illinois |
| 11 | Neiland Henrichsen | 26 | Son | Assembler | Illinois |
| 12 | Andrew Wilk | 48 | Head | Painter & Decorator | Poland |
| 13 | Sophie Wilk | 47 | Wife | Grocery Clerk | Poland |
| 14 | Walter Wilk | 9 | Son | — | Illinois |
| 15 | John J. Golden | 38 | Head | Boiler Operator | Illinois |
| 16 | Rosalie Golden | 38 | Wife | — | Illinois |
| 17 | John Jr. Golden | 12 | Son | — | Illinois |
| 18 | Richard Golden | 10 | Son | — | Illinois |
| 19 | Rosalie Golden | 7 | Daughter | — | Illinois |
| 20 | Albert Meyer | 41 | Lodger | — | Germany |
| 21 | David Cobb Pate | 56 | Head | Stone Derrick Op. | Scotland |
| 22 | Mary Pate | 55 | Wife | — | Canada English |
| 23 | Helen Martin THIS PERSON | 28 | Daughter | — | Illinois |
| 24 | Harry Martin | 33 | Grandson | W.P.A. | Iowa |
| 25 | Patricia Martin | 8 | Granddaughter | — | Illinois |
| 26 | Harry Martin | 6 | Grandson | — | Illinois |
| 27 | Helen Martin | 1 | Granddaughter | — | Illinois |
| 28 | Ellen Scourie | 80 | Mother-in-law | — | Canada English |
| 29 | Margie Meyer | 23 | Lodger | Factory Work | Illinois |
| 30 | William Lamberty | 74 | Head | — | Germany |
| 31 | Mary Louise Lamberty | 71 | Wife | — | Germany |
| 32 | John Lamberty | 30 | Son | Factory Work | Illinois |
| 33 | Edward Lamberty | 25 | Son | Helper | Illinois |
| 34 | George A. Mackenzie | 61 | Head | Veterinarian | Massachusetts |
| 35 | Margaret Mackenzie | 55 | Wife | — | Illinois |
| 36 | Peter Cozzi | 43 | Head | Tailor | Italy |
| 37 | Mathilda Cozzi | 45 | Wife | Grocery Clerk | Italy |
| 38 | Anna Cozzi | 15 | Daughter | — | Illinois |
| 39 | Eda Cozzi | 14 | Daughter | — | Illinois |
| 40 | Rocco Cozzi | 11 | Son | — | Illinois |
Pedigree Summary
Helen
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)