JM
John Mcnamara — 1920 US Census Record
Linked across censuses1920 United States Federal Census · Cook, Illinois
Our Model Tree links this John Mcnamara across the 1900, 1910 and 1920 US Censuses in Cook, Illinois (XGBoost, ~Confirmed) — first a head (b.~1868), then head of a 5-person household.
Age 52
b. ~1868
Male
Head
Born: Ireland
Married
1920 Census Record Details
| Census Year | 1920 |
| Location | Cook, Illinois |
| Surname | McNamara |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 52 |
| Marital Status | Married |
| Birthplace | Ireland |
| Year of Immigration | 1888 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Additional Details | |
| Occupation | Fireman |
| Industry | City |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Home Owned/Rented | O |
| Home Free/Mortgaged | M |
| Birth Country | Ireland |
| Year of Naturalization | 1893 |
| Birthplace (normalized) | ireland |
| Occupation | Fireman |
| Township / Ward | Chicago |
| Est. Birth Year | ~1868 |
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.
5 people recorded at the same address in the 1920 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Helena Mcnamara | Daughter | — | 24 | ~1896 |
| Margaret Mcnamara | Daughter | — | 21 | ~1899 |
| John Mcnamara | Head | — | 52 | ~1868 |
| Emmett Mcnamara | Son | — | 16 | ~1904 |
| Delia Mcnamara | Spouse | — | 48 | ~1872 |
Census Appearances
1900
Cook, Illinois
Head, age 36
Cook, Illinois · implied b. ~1864 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McNamara |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 36 |
| Marital Status | Married |
| Birthplace | Ireland |
| Birth Month | Mar |
| Birth Year | 1864 |
| Year of Immigration | 1881 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Meat Packer |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1910
Cook, Illinois
Head, age 43
Cook, Illinois · implied b. ~1867 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McNamara |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 43 |
| Marital Status | Married |
| Birthplace | Ireland |
| Years Married | 14 |
| Naturalization Status | First papers filed |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Teamster |
| Industry | Brewery |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1920
Cook, Illinois
Head, age 52
Cook, Illinois · implied b. ~1868 — 5 household members
| Surname | McNamara |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 52 |
| Marital Status | Married |
| Birthplace | Ireland |
| Year of Immigration | 1888 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Fireman |
| Industry | City |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Home Owned/Rented | O |
| Home Free/Mortgaged | M |
| Birth Country | Ireland |
| Year of Naturalization | 1893 |
| Birthplace (normalized) | ireland |
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 John Mcnamara across 3 US Census years (1900, 1910 and 1920) in Cook, Illinois, using XGBoost record linkage.
Show:
This person
Anchor record
John Mcnamara
Head · 1920 · age 52 · b. ~1868 · Illinois
★ You are viewing this record
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:1920:14thcensusofpopu352unit:0981)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | John A Barry | 30 | Brother-in-law | Elec. Engr. | Illinois |
| 2 | Bess Barry | 20 | Sister-in-law | Stenographer | Illinois |
| 3 | Oscar Ringquist | 55 | Head | Road Worker | Sweden |
| 4 | Bertina Ringquist | 53 | Wife | — | Sweden |
| 5 | Elmer Ringquist | 23 | Son | Machinist | Illinois |
| 6 | Russell Ringquist | 22 | Son | Clerk | Illinois |
| 7 | Ethel Ringquist | 19 | Daughter | Stenographer | Illinois |
| 8 | Frank W Harrower | 47 | Head | Secretary | Illinois |
| 9 | Alvina Harrower | 46 | Wife | — | Illinois |
| 10 | Clark Harrower | 14 | Son | — | Illinois |
| 11 | Ruth Harrower | 12 | Daughter | — | Illinois |
| 12 | William Benson | 64 | Head | Watchman | Norway |
| 13 | Engeborg Benson | 34 | Daughter | — | Illinois |
| 14 | Eliner Benson | 24 | Son | Carpenter | Illinois |
| 15 | Harold Benson | 20 | Son | — | Illinois |
| 16 | Maurice Benson | 12 | Son | Apprentice | Illinois |
| 17 | Elmore Benson | 13 | Daughter | — | Illinois |
| 18 | Frank Benson | 41 | Head | Carpenter | Sweden |
| 19 | Tillie Benson | 40 | Wife | — | Sweden |
| 20 | Alvar Benson | 10 | Son | — | Illinois |
| 21 | Harold Benson | 8 | Son | — | Illinois |
| 22 | Nels Benson | 5 | Son | — | Illinois |
| 23 | Harry E Baker | 28 | Head | Machinist | Illinois |
| 24 | Lena Baker | 26 | Wife | — | Illinois |
| 25 | Everett Baker | 2 | Son | — | Illinois |
| 26 | Harry D Baker | 1 | Son | — | Illinois |
| 27 | Ida Furst | 49 | Head | Washerwoman | Sweden |
| 28 | Roland Furst | 12 | Son | — | Michigan |
| 29 | John Mcnamara THIS PERSON | 52 | Head | Fireman | Ireland |
| 30 | Delia Mcnamara | 48 | Wife | — | New York |
| 31 | Helena Mcnamara | 24 | Daughter | Operator | Illinois |
| 32 | Margaret Mcnamara | 21 | Daughter | Teacher | Illinois |
| 33 | Emmett Mcnamara | 16 | Son | — | Illinois |
| 34 | Roger Mcnamara | 44 | Head | Policeman | Ireland |
| 35 | Bridget Mcnamara | 44 | Wife | — | Ireland |
| 36 | Mary Mcnamara | 19 | Daughter | Stenographer | Illinois |
| 37 | Winifred Mcnamara | 14 | Daughter | — | Illinois |
| 38 | Josephine Mcnamara | 11 | Daughter | — | Illinois |
| 39 | Roger J Mcnamara | 8 | Son | — | Illinois |
| 40 | Joseph L Mcnamara | 2 | Son | — | Illinois |
| 41 | John C Wille | 46 | Head | Steamfitter | Illinois |
| 42 | Alma Wille | 21 | Wife | — | Illinois |
| 43 | Fred Wille | 13 | Son | — | Illinois |
| 44 | Viola Wille | 11 | Daughter | — | Illinois |
| 45 | August Koeller | 47 | Head | Wood Worker | Germany |
| 46 | Ida Koeller | 40 | Wife | — | Illinois |
| 47 | Elsie Koeller | 19 | Daughter | Bookkeeper | Illinois |
| 48 | Mildred Koeller | 14 | Daughter | — | Illinois |
| 49 | Lillian Koeller | 12 | Daughter | — | Illinois |
| 50 | Dorothy Koeller | 7 | Daughter | — | 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)