MD
Mary Dunn — 1920 US Census Record
Linked across censuses1920 United States Federal Census · Cook, Illinois
Our Model Tree links this Mary Dunn across the 1920, 1930 and 1940 US Censuses in Cook, Illinois (XGBoost, ~Confirmed) — first a head (b.~1859), then head of a 7-person household.
Age 61
b. ~1859
Female
Head
Born: Michigan
Widowed
1920 Census Record Details
| Census Year | 1920 |
| Location | Cook, Illinois |
| Surname | Dunn |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 61 |
| Marital Status | Widowed |
| Birthplace | Michigan |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Additional Details | |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Home Owned/Rented | R |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
| Township / Ward | Chicago |
| Est. Birth Year | ~1859 |
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 1920 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Irene Dunn | Daughter | — | 27 | ~1893 |
| Mary Dunn | Head | — | 61 | ~1859 |
| Helen Hess | Other | — | 19 | ~1901 |
| James Hess | Other | — | 13 | ~1907 |
| Maurice Bolan | Other | — | 19 | ~1901 |
| Paul Hess | Other | — | 11 | ~1909 |
| Paul Dunn | Son | — | 30 | ~1890 |
Census Appearances
1920
Cook, Illinois
Head, age 61
Cook, Illinois · implied b. ~1859 — 7 household members
| Surname | Dunn |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 61 |
| Marital Status | Widowed |
| Birthplace | Michigan |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Home Owned/Rented | R |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1930
Cook, Illinois
Other, age 73
Cook, Illinois · implied b. ~1857 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Dunn |
| Given Name | Mary |
| Relationship to Head | Mother-in-law |
| Sex | F |
| Color / Race | White |
| Age | 73 |
| Marital Status | Widowed |
| Birthplace | Michigan |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | Irish Free State |
| Can Read/Write | Yes |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1940
Cook-County, Illinois
Other, age 84
Cook-County, Illinois · implied b. ~1856 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Dunn |
| Given Name | Mary |
| Relationship to Head | Mother-in-law |
| Sex | F |
| Color / Race | White |
| Age | 84 |
| Marital Status | Widowed |
| Birthplace | Michigan |
| 1935 Residence (City) | CHICAGO |
| 1935 Residence (County) | COOK |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
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 Dunn across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Dunn
Head · 1920 · age 61 · b. ~1859 · Illinois
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1920 US Federal Census — Cook, Illinois
Open full size
1920 US Federal Census — Cook, Illinois
Page Contents
50 people indexed on this census page (ia:1920:14thcensusofpopu347unit:0314)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | John Gedoney | 12 | Son | None | Illinois |
| 2 | Matthew Mccormick | 42 | Head | Business | Illinois |
| 3 | Margaret Mccormick | 23 | Daughter | None | Illinois |
| 4 | James Mccormick | 21 | Son | Timekeeper | Illinois |
| 5 | Edward Mccormick | 13 | Son | None | Illinois |
| 6 | Julia Miller | 22 | Daughter | None | Illinois |
| 7 | Francis Miller | 25 | Son-in-law | Contractor | Illinois |
| 8 | Francis Miller | 1 | Grandson | None | Illinois |
| 9 | James Miller | 0 | Grandson | None | Illinois |
| 10 | James P. Nellis | 28 | Head | Business | Illinois |
| 11 | Nellie Nellis | 28 | Wife | None | Illinois |
| 12 | Dorothy Nellis | 5 | Daughter | None | Illinois |
| 13 | James Nellis | 4 | Son | None | Illinois |
| 14 | Margaret Nellis | 2 | Daughter | None | Illinois |
| 15 | John B. Nellis | 35 | Brother | Clerk | Illinois |
| 16 | Mary Dunn THIS PERSON | 61 | Head | None | Michigan |
| 17 | Paul Dunn | 30 | Son | Creditman | Illinois |
| 18 | Irene Dunn | 27 | Daughter | Teacher | Illinois |
| 19 | Helen Hess | 19 | Granddaughter | Typist | Illinois |
| 20 | James Hess | 13 | Grandson | None | Illinois |
| 21 | Paul Hess | 11 | Grandson | None | Illinois |
| 22 | Maurice Bolan | 19 | Boarder | Inspector | Illinois |
| 23 | Cornelius Mahoney | 55 | Head | Cooper | Ireland |
| 24 | Margaret Mahoney | 50 | Wife | None | Ireland |
| 25 | Honora Mahoney | 26 | Daughter | Stenographer | Illinois |
| 26 | Mary Mahoney | 25 | Daughter | Bookkeeper | Illinois |
| 27 | Margaret Mahoney | 24 | Daughter | Stenographer | Illinois |
| 28 | Sarah Mahoney | 22 | Daughter | Stenographer | Illinois |
| 29 | Cornelius Mahoney | 21 | Son | Yard Clerk | Illinois |
| 30 | Katherine Mahoney | 17 | Daughter | Stenographer | Illinois |
| 31 | John Mulligan | 60 | Head | Sergeant | Ireland |
| 32 | Mary Mulligan | 59 | Wife | None | Ireland |
| 33 | Anna Mulligan | 26 | Daughter | Teacher | Illinois |
| 34 | William A. Mulligan | 25 | Son | Clerk | Illinois |
| 35 | Dominic Mulligan | 17 | Son | None | Illinois |
| 36 | Thomas J. Leyden | 35 | Head | Civil Engineer | Illinois |
| 37 | Marcella Leyden | 34 | Wife | None | Illinois |
| 38 | Thomas J. Leyden | 6 | Son | None | Illinois |
| 39 | Mary M. Leyden | 4 | Daughter | None | Illinois |
| 40 | Patrick J. Doyle | 67 | Head | None | Ireland |
| 41 | John J. Doyle | 37 | Son | None | Illinois |
| 42 | Margaret Doyle | 30 | Daughter | Saleslady | Illinois |
| 43 | Anastasia Doyle | 28 | Daughter | Clerk | Illinois |
| 44 | Ellen Doyle | 26 | Daughter | Clerk | Illinois |
| 45 | Patrick Dwyer | 40 | Head | Policeman | Illinois |
| 46 | Nellie Dwyer | 39 | Wife | None | Illinois |
| 47 | Philomena Dwyer | 12 | Daughter | None | Illinois |
| 48 | Raymond Dwyer | 11 | Son | None | Illinois |
| 49 | Elizabeth Adams | 41 | Head | None | New York |
| 50 | Loretta Adams | 18 | Daughter | Stenographer | Illinois |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1920 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)