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Barbara Martin — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Barbara Martin across the 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a daughter (b.~1925), then head of a 6-person household.
Age 15
b. ~1925
Female
Daughter
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Martin |
| Given Name | Barbara |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Crystal Lake |
| 1935 Residence (County) | McHenry |
| Additional Details | |
| Highest Grade | Hs 1 |
| 1935 Residence | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Oak Park |
| Est. Birth Year | ~1925 |
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 Barbara | Age | Birth yr |
|---|---|---|---|---|
| Neil Martin | Son | — | 8 | ~1932 |
| Lenore Martin | Spouse | — | 37 | ~1903 |
| Wayne Martin | Son | — | 6 | ~1934 |
| John Martin | Head | — | 38 | ~1902 |
| John Martin | Son | — | 12 | ~1928 |
| Barbara Martin | Daughter | — | 15 | ~1925 |
Census Appearances
1930
Cook, Illinois
Daughter, age 6
Cook, Illinois · implied b. ~1924 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martin |
| Given Name | Barbara |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 6 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Daughter, age 15
Cook-County, Illinois · implied b. ~1925 — 6 household members
| Surname | Martin |
| Given Name | Barbara |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Crystal Lake |
| 1935 Residence (County) | McHenry |
| Highest Grade | Hs 1 |
| 1935 Residence | Illinois |
| 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 15 · b. ~1925 · Illinois
★ You are viewing this record
Sibling
John Martin
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Neil Martin
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Wayne Martin
Sibling · 1940 · age 6
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 — Cook-County, Illinois
Open full size
1940 US Federal Census — Cook-County, Illinois
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-00786-00204)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 2 | Some Sonne-Meyer | 51 | Head | Proprietor | Russia |
| 3 | Dora Sonne-Meyer | 47 | Wife | Assistant | Russia |
| 4 | Daniel Sonne-Meyer | 23 | Son | Salesman | Illinois |
| 5 | Marcia Sonne-Meyer | 20 | Daughter | — | Illinois |
| 6 | Beatrice Sonne-Meyer | 11 | Daughter | — | Illinois |
| 7 | William J Sonne-Meyer | 25 | Son | Clerk | Illinois |
| 8 | Etta Sonne-Meyer | 24 | Daughter | Clerk Office | Illinois |
| 9 | Mather Shosha-Sonne | 82 | Mother | — | Russia |
| 10 | Alexander Kalanweiler | 71 | Head | Broker | Illinois |
| 11 | Marietta Kalanweiler | 67 | Wife | — | Indiana |
| 12 | James Whitney | 27 | Son in law | Advertising | Ohio |
| 13 | Ardelia Whitney | 31 | Daughter | — | Illinois |
| 14 | Otto Morse | 59 | Head | Telephone Engineer | New York |
| 15 | Margery Morse | 54 | Wife | — | Canada |
| 16 | Charles Schwabe | 47 | Head | Rate Auditor | Illinois |
| 17 | Ella Schwabe | 44 | Wife | — | Illinois |
| 18 | Charles Schwabe | 16 | Son | — | Illinois |
| 19 | John Varney | 67 | Head | Handy Man | Canada |
| 20 | Ella Varney | 64 | Wife | — | Illinois |
| 21 | William Varney | 26 | Son | Bartender | Illinois |
| 22 | Betty Lou Varney | 15 | Daughter | — | Illinois |
| 23 | Willadine Varney | 8 | Grand daughter | — | Illinois |
| 24 | George E De Hayes | 20 | Lodger | Attendant | Illinois |
| 25 | Otto Goellner | 52 | Head | Inspector | Illinois |
| 26 | Elizabeth Goellner | 49 | Wife | — | England |
| 27 | Adora Seaman | 73 | Mother in law | — | England |
| 28 | Joseph B Taylor | 76 | Head | — | England |
| 29 | Helene Taylor | 70 | Wife | — | England |
| 30 | John F Jr Martin | 38 | Head | Proprietor | Illinois |
| 31 | Lenore Martin | 37 | Wife | — | Kansas |
| 32 | Barbara Martin THIS PERSON | 15 | Daughter | — | Illinois |
| 33 | John Iii Martin | 12 | Son | — | Illinois |
| 34 | Neil Martin | 8 | Son | — | Illinois |
| 35 | Wayne Martin | 6 | Son | — | Illinois |
| 36 | Harry D Greenlees | 57 | Head | Conductor | Ohio |
| 37 | Maud Greenlees | 57 | Wife | — | England |
| 38 | Martha Smith | 59 | Sister in law | — | England |
| 39 | Joseph Padula | 45 | Head | Manager | Illinois |
| 40 | Mary Padula | 44 | Wife | — | 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)