MC
Mary Cavanaugh — 1920 US Census Record
Linked across censuses1920 United States Federal Census · Cook, Illinois
Our Model Tree links this Mary Cavanaugh across the 1920, 1930 and 1940 US Censuses in Cook, Illinois (XGBoost, ~Confirmed) — first a head (b.~1870), then head of a 3-person household.
Age 50
b. ~1870
Female
Head
Born: Illinois
Widowed
1920 Census Record Details
| Census Year | 1920 |
| Location | Cook, Illinois |
| Surname | Cavanaugh |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 50 |
| Marital Status | Widowed |
| Birthplace | Illinois |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Additional Details | |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Irish |
| Home Owned/Rented | R |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Chicago |
| Est. Birth Year | ~1870 |
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 1920 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Marie Cavanaugh | Daughter | — | 22 | ~1898 |
| Irene Cavanaugh | Daughter | — | 30 | ~1890 |
| Mary Cavanaugh | Head | — | 50 | ~1870 |
Census Appearances
1920
Cook, Illinois
Head, age 50
Cook, Illinois · implied b. ~1870 — 3 household members
| Surname | Cavanaugh |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 50 |
| Marital Status | Widowed |
| Birthplace | Illinois |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Irish |
| Home Owned/Rented | R |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Cook, Illinois
Other, age 65
Cook, Illinois · implied b. ~1865 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cavanaugh |
| Given Name | Mary |
| Relationship to Head | Mother-in-law |
| Sex | F |
| Color / Race | White |
| Age | 65 |
| Marital Status | Widowed |
| Birthplace | Illinois |
| Age at First Marriage | 19 |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | North Ireland |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Other, age 73
Cook-County, Illinois · implied b. ~1867 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cavanagh |
| Given Name | Mary |
| Relationship to Head | Mother |
| Sex | F |
| Color / Race | White |
| Age | 73 |
| Marital Status | Widowed |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Income (1939) | 0 |
| Highest Grade | 8 |
| 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 Cavanaugh across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Cavanaugh
Head · 1920 · age 50 · b. ~1870 · 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:1920:14thcensusofpopu322unit:0845)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Anna Marie Dwyer | 4 | Daughter | None | Illinois |
| 52 | Harry Alexander | 28 | Head | Mail Clerk | Illinois |
| 53 | Sadie Alexander | 21 | Wife | None | England |
| 54 | Esther Alexander | 1 | Daughter | None | Illinois |
| 55 | Walter Dunster | 29 | Head | Grocery Manager | Wisconsin |
| 56 | Mildred Dunster | 25 | Wife | None | Illinois |
| 57 | Lillian Dunster | 2 | Daughter | None | Illinois |
| 58 | Frank Heyward | 36 | Head | Engineer | Iowa |
| 59 | Anna Heyward | 30 | Wife | None | Illinois |
| 60 | Harold Heyward | 6 | Son | None | Illinois |
| 61 | Reva Heyward | 4 | Daughter | None | Michigan |
| 62 | Ethel Heyward | 1 | Daughter | None | Illinois |
| 63 | Margaret Farrell | 43 | Head | Shipping Clerk | Illinois |
| 64 | Margaret Farrell | 18 | Daughter | Stenographer | Illinois |
| 65 | John Farrell | 15 | Son | None | Illinois |
| 66 | Joseph Mcauliffe | 32 | Head | Bookkeeper | Illinois |
| 67 | Hazel Mcauliffe | 32 | Wife | None | Illinois |
| 68 | Miriam Mcauliffe | 2 | Daughter | None | Illinois |
| 69 | Mary Cavanaugh THIS PERSON | 50 | Head | None | Illinois |
| 70 | Irene Cavanaugh | 30 | Daughter | Division Head | Illinois |
| 71 | Marie Cavanaugh | 22 | Daughter | Biller | Illinois |
| 72 | Thomas Permulsky | 44 | Head | Collector | Russia |
| 73 | Annie Permulsky | 48 | Wife | None | Russia |
| 74 | Edward Permulsky | 15 | Son | None | Illinois |
| 75 | Sheffield Permulsky | 6 | Son | None | Illinois |
| 76 | Edward Levee | 25 | Head | Chauffeur | Illinois |
| 77 | Ethel Levee | 25 | Wife | None | Spain |
| 78 | Ernest Parkhurst | 27 | Head | Stockkeeper | Illinois |
| 79 | Cora Parkhurst | 22 | Wife | None | Illinois |
| 80 | George Raw | 31 | Head | Rechecker | Wisconsin |
| 81 | Clara Raw | 31 | Wife | None | North Dakota |
| 82 | Edward Lange | 31 | Head | Painter | Indiana |
| 83 | Mary Lange | 33 | Wife | None | Illinois |
| 84 | John Halwan | 25 | Head | Supply Manager | Illinois |
| 85 | Mary Halwan | 25 | Wife | None | Illinois |
| 86 | John Halwan | 2 | Son | None | Illinois |
| 87 | Bernard Halwan | 0 | Son | None | Illinois |
| 88 | Daniel S Malloy | 29 | Head | Foreman | England |
| 89 | Delia Malloy | 29 | Wife | None | Ireland |
| 90 | William J Malloy | 3 | Son | None | Illinois |
| 91 | Kathleen Malloy | 1 | Daughter | None | Illinois |
| 92 | Martin J Norris | 32 | Head | Division Head | Ireland |
| 93 | Alice Norris | 32 | Wife | None | Ireland |
| 94 | Michael Joseph Norris | 1 | Son | None | Illinois |
| 95 | D Sytin | 35 | Head | Foreman | Warsaw R |
| 96 | Ida Sytin | 28 | Wife | None | Russia |
| 97 | Francis Powers | 54 | Head | None | Illinois |
| 98 | George Powers | 20 | Son | Checker | Illinois |
| 99 | Francis Powers | 17 | Daughter | Division Head | Illinois |
| 100 | H A Meyer | 32 | Head | Clerk | Wisconsin |
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)