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Margaret Mcnamara — 1920 US Census Record
Linked across censuses1920 United States Federal Census · Cook, Illinois
Our Model Tree links this Margaret Mcnamara across the 1910 and 1920 US Censuses in Cook, Illinois (XGBoost, ~Confirmed) — first a daughter (b.~1906), then head of a 9-person household.
Age 14
b. ~1906
Female
Daughter
Born: Illinois
Single
1920 Census Record Details
| Census Year | 1920 |
| Location | Cook, Illinois |
| Surname | McNamara |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Canada |
| Additional Details | |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Chicago City |
| Est. Birth Year | ~1906 |
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.
9 people recorded at the same address in the 1920 census.
| Name | Relation to head | Relative to Margaret | Age | Birth yr |
|---|---|---|---|---|
| Alice Mcnamara | Daughter | — | 13 | ~1907 |
| Lawrence Mcnamara | Son | — | 20 | ~1900 |
| Charles Chapman | Other | — | 45 | ~1875 |
| Margaret Mcnamara | Daughter | — | 14 | ~1906 |
| Cecelia Mcnamara | Daughter | — | 16 | ~1904 |
| Isabel Mcnamara | Daughter | — | 18 | ~1902 |
| Delia Mcnamara | Spouse | — | 51 | ~1869 |
| William Truesdale | Son | — | 26 | ~1894 |
| Michael Mcnamara | Head | — | 52 | ~1868 |
Census Appearances
1910
Cook, Illinois
Daughter, age 5
Cook, Illinois · implied b. ~1905 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McNamara |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1920
Cook, Illinois
Daughter, age 14
Cook, Illinois · implied b. ~1906 — 9 household members
| Surname | McNamara |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Canada |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| 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 Mcnamara across 2 US Census years (1910 and 1920) in Cook, Illinois, using XGBoost record linkage.
Show:
This person
Anchor record
Margaret Mcnamara
Daughter · 1920 · age 14 · b. ~1906 · Illinois
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Sibling
Alice Mcnamara
Sibling · 1920 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Cecelia Mcnamara
Sibling · 1920 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Isabel Mcnamara
Sibling · 1920 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Truesdale
Sibling · 1920 · age 26
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lawrence Mcnamara
Sibling · 1920 · age 20
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
1920 US Federal Census — Cook, Illinois
Open full size
1920 US Federal Census — Cook, Illinois
Page Contents
31 people indexed on this census page (ia:1920:14thcensusofpopu350unit:1012)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Dulaski | 27 | — | Bookkeeper | Illinois |
| 2 | Dulaski | 22 | — | Typist | Illinois |
| 3 | Peter Hansen | 50 | Head | Cashier | Denmark |
| 4 | Theresa Hansen | 53 | Wife | — | Denmark |
| 5 | Mildred Hansen | 15 | Daughter | — | Illinois |
| 6 | Walter Hansen | 12 | Son | — | Illinois |
| 7 | Peter Mcfarland | 36 | Head | Machinery | Ireland |
| 8 | Margaret Mcfarland | 34 | Wife | — | Ireland |
| 9 | Agnes M. Mcfarland | 10 | Daughter | — | Illinois |
| 10 | Peter Mcfarland | 0 | Son | — | Illinois |
| 11 | Susan Logan | 21 | Cousin | Binder Girl | Ireland |
| 12 | Michael Mcnamara | 52 | Head | Stationary Engineer | Illinois |
| 13 | Delia Mcnamara | 51 | Wife | — | Canada |
| 14 | Isabel Mcnamara | 18 | Daughter | — | Illinois |
| 15 | Lawrence Mcnamara | 20 | Son | — | Illinois |
| 16 | Cecelia Mcnamara | 16 | Daughter | — | Illinois |
| 17 | Margaret Mcnamara THIS PERSON | 14 | Daughter | — | Illinois |
| 18 | Alice Mcnamara | 13 | Daughter | — | Illinois |
| 19 | William F. Truesdale | 26 | Son | Plumber | Ireland |
| 20 | — | None | — | — | — |
| 21 | — | None | — | — | — |
| 22 | — | None | — | — | — |
| 23 | — | None | — | — | — |
| 24 | — | None | — | — | — |
| 25 | Charles Chapman | 45 | Boarder | — | Canada |
| 26 | Nellie Kehoe | 42 | Head | Dressmaker | Illinois |
| 27 | George Kehoe | 23 | Son | Switchman | Illinois |
| 28 | Alexander Mackie | 20 | Boarder | Engineer | Illinois |
| 29 | Matthew Hayes | 31 | Roomer | Policeman | Ireland |
| 30 | Katherine O'Connor | 42 | Roomer | Saleslady | Ireland |
| 31 | Magdalen Kelly | 20 | Roomer | Operator | 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)