TM
Thomas Mullen — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Thomas Mullen across the 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a head (b.~1891), then head of a 8-person household.
Age 49
b. ~1891
Male
Head
Born: Illinois
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Mullen |
| Given Name | Thomas C. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 49 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Occupation | valuation clerk |
| Industry | Car Co. |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 2664 |
| Highest Grade | H-3 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Valuation Clerk |
| Township / Ward | Chicago City |
| Est. Birth Year | ~1891 |
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 1940 census.
| Name | Relation to head | Relative to Thomas | Age | Birth yr |
|---|---|---|---|---|
| Betty Mullen | Daughter | — | 11 | ~1929 |
| Thomas Mullen | Son | — | 5 | ~1935 |
| Thomas Mullen | Head | — | 49 | ~1891 |
| Margaret Mullen | Daughter | — | 14 | ~1926 |
| Robert Mullen | Son | — | 19 | ~1921 |
| Cora Mullen | Spouse | — | 44 | ~1896 |
| Janet Mullen | Daughter | — | 3 | ~1937 |
| Max Mullen | Son | — | 17 | ~1923 |
Census Appearances
1930
Cook, Illinois
Son, age 39
Cook, Illinois · implied b. ~1891 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mullen |
| Given Name | Thomas |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 39 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | New York |
| Mother's Birthplace | Irish Free State |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Head, age 49
Cook-County, Illinois · implied b. ~1891 — 8 household members
| Surname | Mullen |
| Given Name | Thomas C. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 49 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Occupation | valuation clerk |
| Industry | Car Co. |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 2664 |
| Highest Grade | H-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 Thomas Mullen across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Thomas Mullen
Head · 1940 · age 49 · b. ~1891 · 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 — Cook-County, Illinois
Open full size
1940 US Federal Census — Cook-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00940-00173)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | John E. Beyer | 45 | Head | Baker | Illinois |
| 42 | Gertrude E. Beyer | 43 | Wife | Secretary | Illinois |
| 43 | James Eisler | 23 | Nephew | Grinder | Illinois |
| 44 | Wilkin Gulderson | 33 | Head | Inspector | Holland |
| 45 | Helen O. Gulderson | 32 | Wife | — | Illinois |
| 46 | Patricia Gulderson | 9 | Daughter | — | Illinois |
| 47 | Maude Heath | 64 | Mother-in-law | — | Illinois |
| 48 | Thomas C. Mullen THIS PERSON | 49 | Head | Valuation Clerk | Illinois |
| 49 | Cora A. Mullen | 44 | Wife | — | Illinois |
| 50 | Robert Mullen | 19 | Son | File Clerk | Illinois |
| 51 | Max Mullen | 17 | Son | — | Illinois |
| 52 | Margaret Mullen | 14 | Daughter | — | Illinois |
| 53 | Betty Mullen | 11 | Daughter | — | Illinois |
| 54 | Thomas Mullen | 5 | Son | — | Illinois |
| 55 | Janet Mullen | 3 | Daughter | — | Illinois |
| 56 | Henry Stone | 57 | Head | Machinist | England |
| 57 | Edythe O. Stone | 53 | Wife | — | Illinois |
| 58 | Chas P. Braling | 47 | Head | Secretary | Illinois |
| 59 | Gladys O. Braling | 44 | Wife | — | Illinois |
| 60 | Keith Braling | 17 | Son | — | Illinois |
| 61 | Aris Braling | 15 | Daughter | — | Illinois |
| 62 | Joyce Braling | 7 | Daughter | — | Illinois |
| 63 | Henry Mullen | 60 | Head | Purchasing Agent | Illinois |
| 64 | Inez O. Mullen | 57 | Wife | — | Kansas |
| 65 | Donald Mullen | 21 | Son | Tool Clerk | Illinois |
| 66 | Richard Mullen | 4 | Grandson | — | Illinois |
| 67 | Hugo Gustafson | 47 | Head | Mechanical Engineer | Wisconsin |
| 68 | Esther E. Gustafson | 45 | Wife | — | Illinois |
| 69 | Dorothy Gustafson | 15 | Daughter | — | Illinois |
| 70 | Betty Jean Gustafson | 12 | Daughter | — | Illinois |
| 71 | Alma Olson | 79 | Mother | — | Sweden |
| 72 | Albin O. Landahl | 41 | Head | Pumper | Sweden |
| 73 | Bertha Landahl | 37 | Wife | — | Sweden |
| 74 | George Landahl | 15 | Son | — | Illinois |
| 75 | John Landahl | 12 | Son | — | Illinois |
| 76 | Gordon Landahl | 10 | Son | — | Illinois |
| 77 | Paul Landahl | 2 | Son | — | Illinois |
| 78 | Robert A. Larson | 45 | Head | Car Repairer | Sweden |
| 79 | Anna Larson | 44 | Wife | — | Sweden |
| 80 | Lorraine Larson | 14 | Daughter | — | Illinois |
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)