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Barbara Martin — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Grundy-County, Illinois
Our Model Tree links this Barbara Martin across the 1930 and 1940 US Censuses in Grundy-County, Illinois (XGBoost, ~Confirmed) — first a daughter (b.~1929), then head of a 5-person household.
Age 11
b. ~1929
Female
Daughter
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Grundy-County, Illinois |
| Surname | Martin |
| Given Name | Barbara Anne |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Central City |
| 1935 Residence (County) | Grundy |
| Additional Details | |
| Hours Worked | 0 |
| Highest Grade | No 5 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Central City |
| Est. Birth Year | ~1929 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Barbara | Age | Birth yr |
|---|---|---|---|---|
| Andrew Martin | Head | — | 51 | ~1889 |
| Elmer Martin | Son | — | 21 | ~1919 |
| Barbara Martin | Daughter | — | 11 | ~1929 |
| Anna Martin | Spouse | — | 47 | ~1893 |
| Robert Martin | Son | — | 9 | ~1931 |
Census Appearances
1930
Grundy, Illinois
Daughter, age 1
Grundy, Illinois · implied b. ~1929 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martin |
| Given Name | Barbara A. |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Czechoslovakia |
| Mother's Birthplace | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Grundy-County, Illinois
Daughter, age 11
Grundy-County, Illinois · implied b. ~1929 — 5 household members
| Surname | Martin |
| Given Name | Barbara Anne |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Central City |
| 1935 Residence (County) | Grundy |
| Hours Worked | 0 |
| Highest Grade | No 5 |
| 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 Barbara Martin across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Barbara Martin
Daughter · 1940 · age 11 · b. ~1929 · Illinois
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Sibling
Robert Martin
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Elmer 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 — Grundy-County, Illinois
Open full size
1940 US Federal Census — Grundy-County, Illinois
Page Contents
33 people indexed on this census page (nara:1940:m-t0627-00809-00040)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | John Molly | 78 | Head | — | Czecho-Slovakia |
| 2 | Anna Molly | 59 | Wife | — | Czecho-Slovakia |
| 3 | Anna Rozisa | 61 | Head | — | Austria |
| 4 | Frances Rozisa | 20 | Daughter | Packing | Illinois |
| 5 | Violet Rozisa | 36 | Daughter | Packing | Illinois |
| 6 | Susie Grega | 54 | Head | — | Illinois |
| 7 | George Grega | 30 | Son | Clerk | Illinois |
| 8 | Joseph Grega | 20 | Son | Roller Dept. | Illinois |
| 9 | Andrew Papach | 52 | Head | Foreman | Illinois |
| 10 | Mary Papach | 48 | Wife | — | Illinois |
| 11 | Dorothy Papach | 13 | Daughter | — | Illinois |
| 12 | Glenn Dickson | 31 | Head | Oiler | Illinois |
| 13 | Anne Dickson | 27 | Wife | — | Illinois |
| 14 | John Gecko | 52 | Father-in-law | — | Austria |
| 15 | George Krull | 48 | Head | Coal Shute Laborer | Illinois |
| 16 | Elsie Krull | 39 | Wife | — | Illinois |
| 17 | Edward Krull | 15 | Son | — | Illinois |
| 18 | Rita Anne Krull | 6 | Daughter | — | Illinois |
| 19 | Mary Krull | 46 | Sister | — | Illinois |
| 20 | Andrew Martin | 51 | Head | Laborer | Austria |
| 21 | Anna Martin | 47 | Wife | — | Illinois |
| 22 | Elmer Martin | 21 | Son | Inspector | Illinois |
| 23 | Barbara Anne Martin THIS PERSON | 11 | Daughter | — | Illinois |
| 24 | Robert Martin | 9 | Son | — | Illinois |
| 25 | Mike Andesto | 80 | Head | — | Austria-Hungary |
| 26 | Anna Andesto | 72 | Wife | — | Austria-Hungary |
| 27 | Cora Andesto | 44 | Daughter | — | Illinois |
| 28 | Mary Sabol | 50 | Head | — | Illinois |
| 29 | Kenneth Sabol | 19 | Son | Lining Cutter | Illinois |
| 30 | Mike Dally | 39 | Head | Electrician | Illinois |
| 31 | Leonard Martin | 27 | Head | Laborer | Illinois |
| 32 | Elizabeth Martin | 24 | Wife | — | Illinois |
| 33 | Leonard Martin | 0 | Son | — | Illinois |
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)