WD
William Donovan — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Cook, Illinois
Our Model Tree links this William Donovan across the 1930 and 1940 US Censuses in Cook, Illinois (XGBoost, ~Confirmed) — first a son (b.~1898), then head of a 10-person household.
Age 32
b. ~1898
Male
Son
Born: Illinois
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Cook, Illinois |
| Surname | Donovan |
| Given Name | William M. |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Wisconsin |
| Additional Details | |
| Occupation | Physician |
| Industry | Hospital |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Physician |
| Township / Ward | Chicago |
| Est. Birth Year | ~1898 |
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.
10 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| Johana Donovan | Head | — | 66 | ~1864 |
| William Donovan | Son | — | 32 | ~1898 |
| Donald Morrissey | Other | — | ~1930 | |
| Cecile Donovan | Daughter | — | 40 | ~1890 |
| Grace Donovan | Daughter | — | 24 | ~1906 |
| Francis Morrissey | Other | — | 34 | ~1896 |
| John Donovan | Son | — | 35 | ~1895 |
| Genevieve Donovan | Daughter | — | 38 | ~1892 |
| Mary Morrissey | Daughter | — | 36 | ~1894 |
| Ruth Donovan | Daughter | — | 30 | ~1900 |
Census Appearances
1930
Cook, Illinois
Son, age 32
Cook, Illinois · implied b. ~1898 — 10 household members
| Surname | Donovan |
| Given Name | William M. |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Wisconsin |
| Occupation | Physician |
| Industry | Hospital |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Other, age 44
Cook-County, Illinois · implied b. ~1896 — 39 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Donavan |
| Given Name | William |
| Relationship to Head | Guest |
| Sex | M |
| Color / Race | White |
| Age | 44 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | CHICAGO |
| 1935 Residence (County) | COOK |
| Highest Grade | No C-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 William Donovan across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
William Donovan
Son · 1930 · age 32 · b. ~1898 · Illinois
★ You are viewing this record
Sibling
Genevieve Donovan
Sibling · 1930 · age 38
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Grace Donovan
Sibling · 1930 · age 24
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Cecile Donovan
Sibling · 1930 · age 40
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ruth Donovan
Sibling · 1930 · age 30
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Morrissey
Sibling · 1930 · age 36
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Donovan
Sibling · 1930 · age 35
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
1930 US Federal Census — Cook, Illinois
Open full size
1930 US Federal Census — Cook, Illinois
Page Contents
50 people indexed on this census page (ia:1930:illinoiscensus00reel428:0952)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Thomas J. | 8 | son | — | Illinois |
| 52 | Jack | 5 | son | — | Illinois |
| 53 | Charles Hagen | 22 | Head | Printer | Oklahoma |
| 54 | Helen Hagen | 24 | Wife | — | Poland |
| 55 | Cornelius P. Coakley | 47 | Head | Yes | South Ireland |
| 56 | Nora Coakley | 47 | Wife-H | Yes | South Ireland |
| 57 | John J. Coakley | 19 | son | — | Illinois |
| 58 | Marion Coakley | 16 | daughter | — | Illinois |
| 59 | Elizabeth Coakley | 13 | daughter | — | Illinois |
| 60 | Noreen Coakley | 10 | daughter | — | Illinois |
| 61 | Eileen Coakley | 10 | daughter | — | Illinois |
| 62 | David S. Stewart | 49 | Head | Yes | Scotland |
| 63 | Regina M. Stewart | 45 | Wife-H | Yes | Germany |
| 64 | David A. Stewart | 20 | son | — | Illinois |
| 65 | Jessie B. Pearson | 24 | daughter | Stenographer | Illinois |
| 66 | John Pearson | 5 | son-in-law | — | Illinois |
| 67 | Henry C. Coantyler | 37 | Head | Inspector | Wisconsin |
| 68 | Gwendolyn Coantyler | 35 | Wife-H | Yes | North Wales |
| 69 | Robert H. Coantyler | 11 | son | — | Wisconsin |
| 70 | Richard M. Coantyler | 8 | son | — | Wisconsin |
| 71 | Elizabeth J. Coantyler | 6 | daughter | — | Wisconsin |
| 72 | Genevieve S. Carter | 21 | roomer | Stenographer | Illinois |
| 73 | Peter N. Milonas | 35 | Head | Yes | Greece |
| 74 | Sophia Milonas | 35 | Wife-H | Yes | Turkey |
| 75 | George A. Milonas | 1 | son | — | Illinois |
| 76 | George Mathews | 34 | cousin | Yes | Greece |
| 77 | Theodora Mathews | 27 | cousin | Yes | Greece |
| 78 | Irene Mathews | 1 | neice | — | Illinois |
| 79 | Johana G. Donovan | 66 | Head | — | Wisconsin |
| 80 | Cecile M. Donovan | 40 | daughter | Clerical | Ohio |
| 81 | Genevieve A. Donovan | 38 | daughter | Office | Ohio |
| 82 | John C. Donovan | 35 | son | Collector | Illinois |
| 83 | William M. Donovan THIS PERSON | 32 | son | Physician | Illinois |
| 84 | Ruth F. Donovan | 30 | daughter | Clerk | Illinois |
| 85 | Grace M. Donovan | 24 | daughter | Salesman | Illinois |
| 86 | Francis Morrissey | 34 | son-in-law | — | Iowa |
| 87 | Mary J. Morrissey | 36 | daughter | — | Illinois |
| 88 | Donald J. Morrissey | 0 | grandson | — | Illinois |
| 89 | Edward C. Strand | 36 | Head | Yes | Illinois |
| 90 | Rose F. Strand | 28 | Wife-H | — | Illinois |
| 91 | Alice R. Strand | 8 | daughter | — | Illinois |
| 92 | Arthur R. Ross | 46 | Head | Machinist | Wisconsin |
| 93 | Ellen G. Ross | 43 | Wife | — | Wisconsin |
| 94 | Andrew W. Palya | 34 | Head | Collector | Illinois |
| 95 | Marie Palya | 33 | Wife-H | — | Illinois |
| 96 | Robert A. Palya | 13 | son | — | Illinois |
| 97 | William F. Palya | 11 | son | — | Illinois |
| 98 | Dorothy Palya | 10 | daughter | Clerk | Illinois |
| 99 | Millie M. Tidmarsh | 23 | roomer | Operator | Illinois |
| 100 | Robert Miller | 55 | Head | Yes | Germany |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1930 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)