MD
Mary Doran — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Mary Doran across the 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a daughter (b.~1929), then head of a 7-person household.
Age 11
b. ~1929
Female
Daughter
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Doran |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Evanston City |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Highest Grade | 4 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Evanston 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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| William Doran | Son | — | 8 | ~1932 |
| Mary Doran | Daughter | — | 11 | ~1929 |
| Richard Doran | Son | — | 3 | ~1937 |
| James Doran | Head | — | 42 | ~1898 |
| Margaret Doran | Daughter | — | 7 | ~1933 |
| James Doran | Son | — | 5 | ~1935 |
| Margaret Doran | Spouse | — | 45 | ~1895 |
Census Appearances
1930
Cook, Illinois
Daughter, age 1
Cook, Illinois · implied b. ~1929 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Doran |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Ireland Free State |
| Mother's Birthplace | Ireland Free State |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Daughter, age 11
Cook-County, Illinois · implied b. ~1929 — 7 household members
| Surname | Doran |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Evanston City |
| 1935 Residence (County) | Cook |
| Highest Grade | 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 Mary Doran across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Doran
Daughter · 1940 · age 11 · b. ~1929 · Illinois
★ You are viewing this record
Sibling
Richard Doran
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Doran
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Doran
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Doran
Sibling · 1940 · age 7
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
33 people indexed on this census page (nara:1940:m-t0627-00778-00136)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Earl L. Fletcher | 49 | Head | Manager | Canada |
| 42 | Carrie Fletcher | 49 | Wife | — | Illinois |
| 43 | Carol Fletcher | 6 | Daughter | — | Illinois |
| 44 | Rose Fletcher | 3 | Daughter | — | Illinois |
| 45 | Warren J. Foster | 29 | Lodger | Cab Driver | Illinois |
| 46 | James Doran | 42 | Head | Laborer | Ireland |
| 47 | Margaret Doran | 45 | Wife | — | Ireland |
| 48 | Mary Doran THIS PERSON | 11 | Daughter | — | Illinois |
| 49 | William Doran | 8 | Son | — | Illinois |
| 50 | Margaret Doran | 7 | Daughter | — | Illinois |
| 51 | James Doran | 5 | Son | — | Illinois |
| 52 | Richard Doran | 3 | Son | — | Illinois |
| 53 | William Moore | 41 | Head | Salesman | Ireland |
| 54 | Mary Moore | 41 | Wife | — | Indiana |
| 55 | Maureen Moore | 16 | Daughter | — | Illinois |
| 62 | Laura Gaines | 29 | Head | House Maid | Kentucky |
| 63 | Elizabeth Gaines | 14 | Daughter | Clerk | Illinois |
| 64 | Irving Craig | 12 | Son | — | Illinois |
| 65 | Anna May Gaines | 5 | Daughter | — | Illinois |
| 66 | Laura Gaines | 1 | Daughter | — | Illinois |
| 68 | Ella Gray | 33 | Head | House Maid | Kentucky |
| 69 | William Gray | 12 | Son | — | Kentucky |
| 70 | Lauran Gray | 11 | Daughter | — | Kentucky |
| 71 | Amanda Jackson | 53 | Mother | Homework | Georgia |
| 72 | Alexander Corvin | 46 | Head | Janitor | So. Carolina |
| 73 | Vernetta Corvin | 27 | Wife | — | Illinois |
| 74 | Myrtle Corvin | 15 | Daughter | — | Illinois |
| 75 | James Corvin | 14 | Son | — | Illinois |
| 76 | Alexander Jr. Corvin | 11 | Son | — | Illinois |
| 77 | Elmira Capers | 57 | Lodger | Maid | Louisiana |
| 78 | Irene Harrington | 51 | Head | Maid | Illinois |
| 79 | Joseph Harrington | 27 | Son | Clerk | Illinois |
| 80 | Joan Harrington | 25 | Daughter | Maid | 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)