JM
John Mulligan — 1940 US Census Record
Model Tree available1940 United States Federal Census · Champaign-County, Illinois
Our Model Tree links this John Mulligan across the 1920, 1930 and 1940 US Censuses in Champaign-County, Illinois (XGBoost, ~Confirmed), with identified parents Daniel & Nellie — first a son (b.~1913), then head of a 3-person household.
Age 27
b. ~1913
Male
Son
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Champaign-County, Illinois |
| Surname | Mulligan |
| Given Name | John M. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 27 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Champaign |
| 1935 Residence (County) | Champaign |
| Additional Details | |
| Occupation | Clerk |
| Industry | Grocery |
| Class of Worker | PW |
| Hours Worked | 50 |
| Income (1939) | 600 |
| Highest Grade | C 3 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Clerk |
| Township / Ward | Champaign |
| Est. Birth Year | ~1913 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Nellie Mulligan | Spouse | — | 65 | ~1875 |
| Daniel Mulligan | Head | — | 60 | ~1880 |
| John Mulligan | Son | — | 27 | ~1913 |
Census Appearances
1920
Champaign, Illinois
Son, age 7
Champaign, Illinois · implied b. ~1913 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mulligan |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 7 |
| 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
Champaign, Illinois
Son, age 17
Champaign, Illinois · implied b. ~1913 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mulligan |
| Given Name | John M. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Champaign-County, Illinois
Son, age 27
Champaign-County, Illinois · implied b. ~1913 — 3 household members
| Surname | Mulligan |
| Given Name | John M. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 27 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Champaign |
| 1935 Residence (County) | Champaign |
| Occupation | Clerk |
| Industry | Grocery |
| Class of Worker | PW |
| Hours Worked | 50 |
| Income (1939) | 600 |
| Highest Grade | C 3 |
| 1935 Residence | Same place |
| 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 Mulligan across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Daniel Mulligan (~0.92 confidence) and mother Nellie Mulligan (~0.92 confidence) and mother Nellie Mulligan (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Daniel Mulligan
b. ~1880
Source father
● Household
· direct · ~0.92
Mother
Nellie Mulligan
b. ~1875
Source mother
● Household
· direct · ~0.92
Mother
Nellie Mulligan
b. ~1882
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Mulligan
Son · 1940 · age 27 · b. ~1913 · Illinois
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Champaign-County, Illinois
Open full size
1940 US Federal Census — Champaign-County, Illinois
Page Contents
38 people indexed on this census page (nara:1940:m-t0627-00765-00603)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Fred M. Price | 61 | Head | Lawyer | Illinois |
| 2 | Walter C. Price | 67 | Brother | Salesman | Illinois |
| 3 | Winnifred Price | 55 | Sister | — | Illinois |
| 4 | Ben M. Price | 57 | Head | Lawyer | Illinois |
| 5 | Martha H. Price | 42 | Wife | — | Illinois |
| 6 | Ben M. Price | 14 | Son | — | Illinois |
| 7 | Daniel C. Mulligan | 60 | Head | Salesman | Illinois |
| 8 | Nellie H. Mulligan | 65 | Wife | — | Illinois |
| 9 | John M. Mulligan THIS PERSON | 27 | Son | Clerk | Illinois |
| 10 | Clifford J. Price | 47 | Head | Switchman | Illinois |
| 11 | Florence Price | 50 | Wife | — | Illinois |
| 12 | Glen C. Fisher | 36 | Head | Office Manager | Illinois |
| 13 | Margaret G. Fisher | 32 | Wife | Stenographer | Illinois |
| 14 | Virginia C. Fisher | 9 | Daughter | — | Michigan |
| 15 | John C. Fisher | 7 | Son | — | Illinois |
| 16 | Donald S. Condit | 62 | Head | Broker | Illinois |
| 17 | Helen Condit | 58 | Wife | — | Illinois |
| 18 | Lucy Condit | 27 | Daughter | — | Illinois |
| 20 | Mayme Rosnaugh | 60 | Head | Laundress | Illinois |
| 21 | Lora Marie Rosnaugh | 29 | Daughter | Saleswoman | Illinois |
| 22 | Arthur D. Rosnaugh | 24 | Head | Stockman | Illinois |
| 23 | Fern Rosnaugh | 28 | Wife | — | Indiana |
| 24 | Janis Rosnaugh | 3 | Daughter | — | Illinois |
| 25 | Ruth Dickerson | 46 | Head | — | Illinois |
| 26 | Webster B. Markland | 42 | Head | Salesman | Illinois |
| 27 | Helen Markland | 44 | Wife | — | Illinois |
| 28 | Joseph Markland | 76 | Father | — | Ohio |
| 29 | Earl W. Gordon | 48 | Head | Meat Cutter | Michigan |
| 30 | Elsie M. Gordon | 46 | Wife | Saleslady | Iowa |
| 31 | John P. Gordon | 8 | Son | — | Illinois |
| 32 | Charles S. Romine | 23 | Head | 52 | Illinois |
| 33 | Mary U. Jones | 67 | Mother in law | — | Illinois |
| 35 | Clyde R. Fletcher | 43 | Head | Conductor | Illinois |
| 36 | Estella Fletcher | 48 | Wife | — | Illinois |
| 37 | Harold Fletcher | 15 | Son | — | Illinois |
| 38 | Lyle Mckinley | 25 | Head | Salesman | Illinois |
| 39 | Eloise Mckinley | 24 | Wife | Stenographer | Texas |
| 40 | Ferris Frank | 47 | Head | Machinist | Illinois |
Pedigree Summary
John
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 1940 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)