MD
Margaret Donahue — 1940 US Census Record
Model Tree available1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Margaret Donahue across the 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed), with identified parents Maurice & Robert — first a spouse (b.~1914), then head of a 3-person household.
Age 26
b. ~1914
Female
Spouse
Born: Illinois
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Donahue |
| Given Name | Margaret A. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 26 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Chicago City |
| Est. Birth Year | ~1914 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Margaret | Age | Birth yr |
|---|---|---|---|---|
| John Donahue | Head | — | 31 | ~1909 |
| Margaret Donahue | Spouse | — | 26 | ~1914 |
| John Donahue | Son | — | 5 | ~1935 |
Census Appearances
1920
Cook, Illinois
Daughter, age 6
Cook, Illinois · implied b. ~1914 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Donohue |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 6 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Ireland |
| 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 16
Cook, Illinois · implied b. ~1914 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Donohue |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | Stenographer |
| Industry | Office |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Spouse, age 26
Cook-County, Illinois · implied b. ~1914 — 3 household members
| Surname | Donahue |
| Given Name | Margaret A. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 26 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Income (1939) | 0 |
| Highest Grade | H 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 Margaret Donahue across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Maurice Donohue (~0.92 confidence) and father Robert Donohue (~0.92 confidence) and mother Clara Donohue (~0.92 confidence) and mother Mary Donohue (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Maurice Donohue
b. ~1882
Source father
● Household
· direct · ~0.92
Father
Robert Donohue
b. ~1884
Source father
● Household
· direct · ~0.92
Mother
Clara Donohue
b. ~1884
Source mother
● Household
· direct · ~0.92
Mother
Mary Donohue
b. ~1881
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Margaret Donahue
Spouse · 1940 · age 26 · b. ~1914 · 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-t0627-01002-00297)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Marie E. Brandl | 32 | Wife | — | Pennsylvania |
| 42 | Joseph F. Brandl | 7 | Son | — | Illinois |
| 43 | John L. Donahue | 31 | Head | Collector | Illinois |
| 44 | Margaret A. Donahue THIS PERSON | 26 | Wife | — | Illinois |
| 45 | John L. Jr. Donahue | 5 | Son | — | Illinois |
| 46 | George J. Kolar | 57 | Head | Electrician | Illinois |
| 47 | Emma L. Kolar | 57 | Wife | — | Sweden |
| 48 | Joseph Miller | 35 | Head | Clerk | Ohio |
| 49 | Theresa B. Miller | 34 | Wife | — | Austria |
| 50 | Marilyn J. Miller | 9 | Daughter | — | Illinois |
| 51 | Joseph Jr. Miller | 5 | Son | — | Illinois |
| 52 | Leonard Schmidt | 36 | Head | Salesman | Illinois |
| 53 | Eva M. Schmidt | 37 | Wife | — | Brazil |
| 54 | Leonard D. Schmidt | 16 | Son | — | Illinois |
| 55 | Dolores Schmidt | 14 | Daughter | — | Illinois |
| 56 | Charlotte E. Schmidt | 12 | Daughter | — | Illinois |
| 57 | Clarence C. Schmidt | 7 | Son | — | Illinois |
| 58 | Henry Hilferich | 71 | Head | — | Ohio |
| 59 | Lydia Hilferich | 52 | Wife | — | Brazil |
| 60 | Reinhard Granger | 43 | Head | Teamster | Germany |
| 61 | Hildegard Granger | 35 | Wife | — | Minnesota |
| 62 | Dorothy M. Granger | 12 | Daughter | — | Illinois |
| 63 | Ruth E. Granger | 10 | Daughter | — | Illinois |
| 64 | Sarah L. Gerke | 55 | Head | — | England |
| 65 | Evert Maalainen | 65 | Head | Broker | Finland |
| 66 | Earl C. Miller | 33 | Head | Screw Mach. Operator | Illinois |
| 67 | Viola C. Miller | 25 | Wife | — | Illinois |
| 68 | Joyce L. Miller | 1 | Daughter | — | Illinois |
| 69 | Thomas M. Conlin | 78 | Head | Machinist | Illinois |
| 70 | Margaret T. Conlin | 28 | Wife | — | Illinois |
| 71 | Selma Karlson | 59 | Head | — | Finland |
| 72 | Edith E. Karlson | 28 | Daughter | Typist | Illinois |
| 73 | James O. Jensen | 77 | Head | — | Denmark |
| 74 | Mary J. Jensen | 70 | Wife | — | Pennsylvania |
| 75 | Mae M. Jensen | 40 | Daughter | Bookkeeper | Illinois |
| 76 | Sophie C. Ahern | 58 | Sister in law | — | Wisconsin |
| 77 | Hannah Hanson | 72 | Sister | — | Wisconsin |
| 78 | Emil M. Canter | 52 | Head | Chauffeur | Germany |
| 79 | Rena A. Canter | 52 | Wife | — | Illinois |
| 80 | William R. Hount | 27 | Son | Mail Carrier | Illinois |
Pedigree Summary
Margaret
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)