JD
James Dunn — 1930 US Census Record
Model Tree available1930 United States Federal Census · Cook, Illinois
Our Model Tree links this James Dunn across the 1910, 1920 and 1930 US Censuses in Cook, Illinois (XGBoost, ~Confirmed), with identified parents James & John — first a son (b.~1909), then head of a 2-person household.
Age 21
b. ~1909
Male
Son
Born: Illinois
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Cook, Illinois |
| Surname | Dunn |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Additional Details | |
| Occupation | Salesman |
| Industry | Wholesale |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Salesman |
| Township / Ward | City Marshall |
| Est. Birth Year | ~1909 |
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.
2 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| Clara Dunn | Head | — | 52 | ~1878 |
| James Dunn | Son | — | 21 | ~1909 |
Census Appearances
1910
Cook, Illinois
Son, age
Cook, Illinois · implied b. ~1910 — 11 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Dunn |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 0 |
| 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 10
Cook, Illinois · implied b. ~1910 — 11 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Dunn |
| Given Name | James |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| 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 21
Cook, Illinois · implied b. ~1909 — 2 household members
| Surname | Dunn |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | Salesman |
| Industry | Wholesale |
| 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 James Dunn across 3 US Census years (1910, 1920 and 1930) in Cook, Illinois, using XGBoost record linkage. Identified parents: father James Dunn (~0.92 confidence) and father John Dunn (~0.92 confidence) and mother Mary Dunn (~0.92 confidence) and mother Ellen Dunn (~0.92 confidence) and mother Clara Dunn (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
James Dunn
b. ~1885
Source father
● Household
· direct · ~0.92
Father
John Dunn
b. ~1872
Source father
● Household
· direct · ~0.92
Mother
Mary Dunn
b. ~1890
Source mother
● Household
· direct · ~0.92
Mother
Ellen Dunn
b. ~1872
Source mother
● Household
· direct · ~0.92
Mother
Clara Dunn
b. ~1878
Source mother
● Household
· direct · ~0.92
This person
Anchor record
James Dunn
Son · 1930 · age 21 · b. ~1909 · 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:illinoiscensus00reel409:0347)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | John Layton | 40 | Head | Salesman | Illinois |
| 2 | Irene H Layton | 41 | Wife | — | Illinois |
| 3 | Gladys Layton | 17 | Daughter | — | Illinois |
| 4 | Gertrude Layton | 15 | Daughter | — | Illinois |
| 5 | Leland Layton | 12 | Son | — | Illinois |
| 6 | Joseph Layton | 9 | Son | — | Illinois |
| 7 | Mary J Layton | 7 | Daughter | — | Illinois |
| 8 | William Layton | 4 | Son | — | Illinois |
| 9 | Jean Layton | 1 | Son | — | Illinois |
| 10 | Herbert Branston | 45 | Head | Laborer | Illinois |
| 11 | Adaline H Branston | 33 | Wife | — | Illinois |
| 12 | Leon Branston | 13 | Son | — | Illinois |
| 13 | Eugene Branston | 11 | Son | — | Illinois |
| 14 | Elnora R Branston | 9 | Daughter | — | Illinois |
| 15 | Mary J Branston | 7 | Daughter | — | Illinois |
| 16 | Robert R Branston | 5 | Son | — | Illinois |
| 17 | Henry M Branston | 4 | Son | — | Illinois |
| 18 | Beulah M Branston | 2 | Daughter | — | Illinois |
| 19 | Isaac Francis | 71 | Head | — | Illinois |
| 20 | Lucie N Francis | 71 | Wife | — | Illinois |
| 21 | Lucian Layton | 81 | Head | — | Illinois |
| 22 | Samuel Mcarthur | 39 | Head | — | Germany |
| 23 | Eva Mcarthur | 40 | Wife | — | Illinois |
| 24 | James S Mcarthur | 13 | Son | — | Illinois |
| 25 | Charles Graham | 74 | Head | — | Illinois |
| 26 | Mary M Graham | 74 | Wife | — | Illinois |
| 27 | Charles Lammert | 41 | Boarder | Laborer | Illinois |
| 28 | Elizabeth Lammert | 42 | Boarder | — | Illinois |
| 29 | Charles J Lammert | 13 | Boarder | — | Illinois |
| 30 | Lyda Morris | 71 | Head | — | Illinois |
| 31 | James J Fitzgerald | 48 | Son | Laborer | Illinois |
| 32 | Ruth Davis | 19 | Servant | — | Illinois |
| 33 | Flora Hagert | 63 | Head | — | Illinois |
| 34 | Elizabeth Hagert | 34 | Daughter | — | Illinois |
| 35 | Mary Knapp | 75 | Head | — | Germany |
| 36 | Rosa B Knapp | 51 | Daughter | — | Illinois |
| 37 | Edith Knapp | 41 | Daughter | — | Illinois |
| 38 | John Smoot | 56 | Head | Laborer | Illinois |
| 39 | Molly Smoot | 55 | Sister | — | Illinois |
| 40 | Jessie Patterson | 53 | Sister | — | Illinois |
| 41 | Peter Pearce | 51 | Head | Laborer | Illinois |
| 42 | Mary M Pearce | 43 | Sister | — | Illinois |
| 43 | Samuel H Ireland | 28 | Head | Conductor | Indiana |
| 44 | Elizabeth Ireland | 27 | Wife | — | Illinois |
| 45 | Elizabeth Kramer | 74 | Head | — | Illinois |
| 46 | Mildred Kramer | 20 | Daughter | — | Illinois |
| 47 | William Delaney | 60 | Head | Butcher | Illinois |
| 48 | Nathan Delaney | 53 | Brother | — | Illinois |
| 49 | Clara Dunn | 52 | Head | — | Illinois |
| 50 | James Dunn THIS PERSON | 21 | Son | Salesman | Illinois |
Related Census Records
Pedigree Summary
James
Gen 1 · 5 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)