JM
John Mcnamara — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Cook, Illinois
Our Model Tree links this John Mcnamara across the 1920, 1930 and 1940 US Censuses in Cook, Illinois (XGBoost, ~Confirmed) — first a head (b.~1858), then head of a 6-person household.
Age 72
b. ~1858
Male
Head
Born: Ireland
Widowed
1930 Census Record Details
| Census Year | 1930 |
| Location | Cook, Illinois |
| Surname | McNamara |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 72 |
| Marital Status | Widowed |
| Birthplace | Ireland |
| Naturalization Status | Naturalized |
| Year of Immigration | 1884 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Additional Details | |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Home Owned/Rented | R |
| Home Value / Rent | 24 |
| Veteran | No |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
| Township / Ward | Chicago |
| Est. Birth Year | ~1858 |
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.
6 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Mary Mcnamara | Daughter | — | 22 | ~1908 |
| Margaret Mcnamara | Daughter | — | 20 | ~1910 |
| John Mcnamara | Head | — | 72 | ~1858 |
| Frank Mcnamara | Son | — | 24 | ~1906 |
| Thomas Mcnamara | Son | — | 32 | ~1898 |
| Edward Mcnamara | Son | — | 27 | ~1903 |
Census Appearances
1920
Cook, Illinois
Other, age 57
Cook, Illinois · implied b. ~1863 — 50 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McNamara |
| Given Name | John |
| Relationship to Head | Roomer |
| Sex | M |
| Color / Race | White |
| Age | 57 |
| Marital Status | Single |
| Birthplace | Ireland |
| Year of Immigration | 1885 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth Country | Ireland |
| Year of Naturalization | 1890 |
| Birthplace (normalized) | ireland |
1930
Cook, Illinois
Head, age 72
Cook, Illinois · implied b. ~1858 — 6 household members
| Surname | McNamara |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 72 |
| Marital Status | Widowed |
| Birthplace | Ireland |
| Naturalization Status | Naturalized |
| Year of Immigration | 1884 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Home Owned/Rented | R |
| Home Value / Rent | 24 |
| Veteran | No |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1940
Cook-County, Illinois
Other, age 84
Cook-County, Illinois · implied b. ~1856 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | MCNAMARA |
| Given Name | John, J. |
| Relationship to Head | Lodger |
| Sex | M |
| Color / Race | White |
| Age | 84 |
| Marital Status | Single |
| Birthplace | Ireland |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Occupation | SS Fireman |
| Industry | Sand business |
| Class of Worker | PW |
| Income (1939) | 442 |
| Highest Grade | No 6 |
| 1935 Residence | Same Place |
| Birth Country | Ireland |
| 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 (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Mcnamara
Head · 1930 · age 72 · b. ~1858 · Illinois
★ You are viewing this record
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:illinoiscensus00reel437:0762)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Andrew Anderson | 20 | Head | — | Illinois |
| 52 | Mary Anderson | 21 | Wife | — | Illinois |
| 53 | John Anderson | 2 | Son | — | Illinois |
| 54 | Mary Anderson | 1 | Daughter | — | Illinois |
| 55 | Johnny Anderson | 0 | Son | — | Illinois |
| 56 | John Mcnamara THIS PERSON | 72 | Head | — | Ireland |
| 57 | Thomas Mcnamara | 32 | Son | Cartage Clerk | Illinois |
| 58 | Edward Mcnamara | 27 | Son | — | Illinois |
| 59 | Frank Mcnamara | 24 | Son | — | Illinois |
| 60 | Mary Mcnamara | 22 | Daughter | — | Illinois |
| 61 | Margaret Mcnamara | 20 | Daughter | — | Illinois |
| 62 | Jerry Ryan | 35 | Head | Fireman | Ireland |
| 63 | Mary Ryan | 35 | Wife | — | Ireland |
| 64 | Mary Ryan | 9 | Daughter | — | Illinois |
| 65 | James Ryan | 8 | Son | — | Illinois |
| 66 | John Ryan | 6 | Son | — | Illinois |
| 67 | Marguerette Ryan | 5 | Daughter | — | Illinois |
| 68 | Jerry Ryan | 3 | Son | — | Illinois |
| 69 | Catherine Ryan | 0 | Daughter | — | Illinois |
| 70 | John Daly | 65 | Head | Laborer | Ireland |
| 71 | Margaret Daly | 65 | Wife | — | Ireland |
| 72 | Margaret Daly | 22 | Daughter | File Clerk | Illinois |
| 73 | Catherine Daly | 21 | Daughter | Bookkeeper | Illinois |
| 74 | John Daly | 22 | Son | Elevator Man | Illinois |
| 75 | Peter Daly | 22 | Son | — | Illinois |
| 76 | Francis Daly | 19 | Son | — | Illinois |
| 77 | Mary Daly | 5 | Daughter | — | Illinois |
| 78 | Mary Ward | 50 | Head | Inspector | Illinois |
| 79 | Patrick Kennedy | 20 | Head | — | Canada |
| 80 | Phyllis Kennedy | 22 | Wife | — | Canada |
| 81 | Patrick Jr. Kennedy | 2 | Son | — | Canada |
| 82 | Frank Duffy | 28 | Head | Auto Repair | Illinois |
| 83 | Margaret Duffy | 27 | Wife | — | Illinois |
| 84 | Frank Duffy | 5 | Son | — | Illinois |
| 85 | George Duffy | 4 | Son | — | Illinois |
| 86 | Mary Duffy | 1 | Daughter | — | Illinois |
| 87 | Patrick Sullivan | 53 | Head | Foreman | Ireland |
| 88 | Julia Sullivan | 46 | Wife | — | Ireland |
| 89 | Margaret Sullivan | 20 | Daughter | General Office | Illinois |
| 90 | Jeremiah Sullivan | 18 | Son | Laborer | Illinois |
| 91 | Timothy Sullivan | 16 | Son | — | Illinois |
| 92 | James Sullivan | 14 | Son | — | Illinois |
| 93 | Ellen Sullivan | 11 | Son | — | Illinois |
| 94 | Anne Marie Sullivan | 9 | Daughter | — | Illinois |
| 95 | Bernice Sullivan | 7 | Daughter | — | Illinois |
| 96 | Bernard Mchale | 24 | Head | Driver | Canada |
| 97 | Catherine Mchale | 22 | Wife | — | Illinois |
| 98 | Patricia Mchale | 2 | Daughter | — | Illinois |
| 99 | Bernard Mchale | 1 | Son | — | Illinois |
| 100 | John Mchale | 22 | Brother | Switchman | Ireland |
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)