JF
John Flynn — 1930 US Census Record
Model Tree available1930 United States Federal Census · Cook, Illinois
Our Model Tree links this John Flynn across the 1910, 1920 and 1930 US Censuses in Cook, Illinois (XGBoost, ~Confirmed), with identified parents Mary & Thomas — first a son (b.~1906), then head of a 8-person household.
Age 24
b. ~1906
Male
Son
Born: Illinois
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Cook, Illinois |
| Surname | Flynn |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Additional Details | |
| Occupation | Operator |
| Industry | Switchboard |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Operator |
| 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.
8 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Mary Flynn | Head | — | 63 | ~1867 |
| Mary Flynn | Other | — | 3 | ~1927 |
| Mildred Flynn | Other | — | 1 | ~1929 |
| Alice Flynn | Other | — | 25 | ~1905 |
| Edward Flynn | Son | — | 32 | ~1898 |
| James Flynn | Son | — | 34 | ~1896 |
| John Flynn | Son | — | 24 | ~1906 |
| William Flynn | Son | — | 27 | ~1903 |
Census Appearances
1910
Cook, Illinois
Son, age 1
Cook, Illinois · implied b. ~1909 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Flynn |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| 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
Son, age 12
Cook, Illinois · implied b. ~1908 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Flynn |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Cook, Illinois
Son, age 24
Cook, Illinois · implied b. ~1906 — 8 household members
| Surname | Flynn |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | Operator |
| Industry | Switchboard |
| Class of Worker | W |
| Can Read/Write | Yes |
| 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 John Flynn across 3 US Census years (1910, 1920 and 1930) in Cook, Illinois, using XGBoost record linkage. Identified parents: mother Mary Flynn (~0.92 confidence) and father Thomas Flynn (~0.92 confidence) and mother Mary Flynn (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Mary Flynn
b. ~1867
Source mother
● Household
· direct · ~0.92
Father
Thomas Flynn
b. ~1872
Source father
● Household
· direct · ~0.92
Mother
Mary Flynn
b. ~1877
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Flynn
Son · 1930 · age 24 · b. ~1906 · Illinois
★ You are viewing this record
Sibling
Edward Flynn
Sibling · 1930 · age 32
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Flynn
Sibling · 1930 · age 27
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Flynn
Sibling · 1930 · age 34
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
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:illinoiscensus00reel470:0725)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Owen J Leddy | 0 | Son | — | Illinois |
| 2 | Albert Voelz | 67 | Head | Carpenter | Germany |
| 3 | Annie Voelz | 63 | Wife | — | Germany |
| 4 | Arthur Voelz | 38 | Son-in-law | Investigator | Illinois |
| 5 | Ida Voelz | 37 | Wife | — | Illinois |
| 6 | Arthur Jr. Voelz | 7 | Son | — | Illinois |
| 7 | Alice Voelz | 7 | Daughter | — | Illinois |
| 8 | Leo M. O'Hern | 38 | Head | Fireman | Illinois |
| 9 | Helen M. O'Hern | 39 | Wife | — | Illinois |
| 10 | Raymond J. O'Hern | 8 | Son | — | Illinois |
| 11 | Arthur G. O'Hern | 6 | Daughter | — | Illinois |
| 12 | Helen F. O'Hern | 2 | Daughter | — | Illinois |
| 13 | Joseph Mcgrath | 40 | Head | Laborer | Illinois |
| 14 | Margaret F. Mcgrath | 41 | Wife | — | Illinois |
| 15 | Eugene M. Mcgrath | 11 | Son | — | Illinois |
| 16 | Richard Mcgrath | 8 | Son | — | Illinois |
| 17 | Frances M. Mcgrath | 5 | Daughter | — | Illinois |
| 18 | Emma Spring | 70 | Head | — | Germany |
| 19 | Albert H. Jr. Voelz | 30 | Son-in-law | Mechanic | Illinois |
| 20 | Marion Voelz | 27 | Daughter | — | Illinois |
| 21 | June Voelz | 4 | Gr. Daughter | — | Illinois |
| 22 | Clara Wall | 58 | Sister | — | Germany |
| 23 | Henry H. Siemssen | 67 | Head | — | Illinois |
| 24 | Emma Siemssen | 61 | Wife | — | Illinois |
| 25 | John Quigley | 42 | Head | Fireman | Iowa |
| 26 | Loretta Quigley | 34 | Wife | — | Illinois |
| 27 | Dorothy Quigley | 11 | Daughter | — | Illinois |
| 28 | Evelyn Quigley | 6 | Daughter | — | Illinois |
| 29 | Irene Quigley | 5 | Daughter | — | Illinois |
| 30 | Mary Flynn | 63 | Head | — | Illinois |
| 31 | James Flynn | 34 | Son | Fireman | Illinois |
| 32 | Alice Flynn | 25 | Daughter-in-law | — | Illinois |
| 33 | Mary M. Flynn | 3 | Gr. Daughter | — | Illinois |
| 34 | Mildred Flynn | 1 | Gr. Daughter | — | Illinois |
| 35 | Edward Flynn | 32 | Son | Chauffeur | Illinois |
| 36 | William Flynn | 27 | Son | Fireman | Illinois |
| 37 | John Flynn THIS PERSON | 24 | Son | Operator | Illinois |
| 38 | Iver Iversen | 36 | Head | Butcher | Norway |
| 39 | Anna Iversen | 35 | Wife | — | Illinois |
| 40 | Eleanor Iversen | 8 | Daughter | Saleslady | Illinois |
| 41 | Joy Iversen | 6 | Gr. Daughter | — | Illinois |
| 42 | Jeanne Iversen | 6 | Gr. Daughter | — | Illinois |
| 43 | George Rinehart | 40 | Head | Operator | Pennsylvania |
| 44 | Myrtle Rinehart | 39 | Wife | — | Illinois |
| 45 | Robert Rinehart | 14 | Son | — | Illinois |
| 46 | June Rinehart | 10 | Daughter | — | Illinois |
| 47 | Everett Kidd | 42 | Head | Correspondent | Illinois |
| 48 | Ida Kidd | 35 | Wife | — | Illinois |
| 49 | Mary Jane Kidd | 6 | Daughter | — | Illinois |
| 50 | Arline Bailey | 4 | Boarder | — | Illinois |
Pedigree Summary
John + 3 siblings
Gen 1 · 3 parents
~0.92
Max depth 4 (1900–1950 window)
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)