PL
Patrick Lynch — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Patrick Lynch across the 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a head (b.~1908), then head of a 4-person household.
Age 32
b. ~1908
Male
Head
Born: Illinois
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Lynch |
| Given Name | Patrick |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Occupation | Railroad |
| Industry | PW |
| Class of Worker | 462 |
| Highest Grade | No 6 |
| 1935 Residence | 48 |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Railroad |
| Township / Ward | Chicago |
| Est. Birth Year | ~1908 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Patrick | Age | Birth yr |
|---|---|---|---|---|
| Patrick Lynch | Head | — | 32 | ~1908 |
| Lawrence Lynch | Son | — | 5 | ~1935 |
| Helen Lynch | Daughter | — | 5 | ~1935 |
| Effie Lynch | Spouse | — | 29 | ~1911 |
Census Appearances
1920
Cook, Illinois
Other, age 13
Cook, Illinois · implied b. ~1907 — 50 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lynch |
| Given Name | Patrick |
| Relationship to Head | X |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Ireland |
| Mother's Birthplace | United States |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Cook, Illinois
Head, age 22
Cook, Illinois · implied b. ~1908 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lynch |
| Given Name | Patrick |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Married |
| Birthplace | Illinois |
| Age at First Marriage | 21 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Northern Ireland |
| Occupation | Switchman |
| Industry | Railroad |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 15 |
| Veteran | No |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Head, age 32
Cook-County, Illinois · implied b. ~1908 — 4 household members
| Surname | Lynch |
| Given Name | Patrick |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (County) | Cook |
| Occupation | Railroad |
| Industry | PW |
| Class of Worker | 462 |
| Highest Grade | No 6 |
| 1935 Residence | 48 |
| 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 Patrick Lynch across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Patrick Lynch
Head · 1940 · age 32 · b. ~1908 · Illinois
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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-t0627-00949-00768)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | John Duer | 3 | Son | — | Illinois |
| 42 | Jacob Leach | 44 | Son in law | Freight Transportation | Illinois |
| 43 | Gladys Leach | 19 | Daughter | — | Illinois |
| 44 | James Mcconville | 38 | Head | Pw | Northern Ireland |
| 45 | Anna Mcconville | 31 | Wife | — | Nebraska |
| 46 | Rosemary Mcconville | 8 | Daughter | — | Illinois |
| 47 | James Mcconville | 7 | Son | — | Illinois |
| 48 | Caroline Mcconville | 4 | Daughter | — | Illinois |
| 49 | Lawrence Cole | 48 | Head | Commonwealth Edison | Wyoming |
| 50 | Oline Cole | 41 | Wife | — | Illinois |
| 51 | Thomas Dunleavy | 38 | Head | Meat Packing Industry | Illinois |
| 52 | Louise Dunleavy | 35 | Wife | — | Illinois |
| 53 | Thomas Dunleavy | 14 | Son | — | Illinois |
| 54 | William Dunleavy | 12 | Son | — | Illinois |
| 55 | Harold Dunleavy | 11 | Son | — | Illinois |
| 56 | Mary Dunleavy | 10 | Daughter | — | Illinois |
| 57 | Geraldine Dunleavy | 8 | Daughter | — | Illinois |
| 58 | John Dunleavy | 1 | Son | — | Illinois |
| 59 | Debie Casey | 69 | Head | — | Ireland |
| 60 | Mary Casey | 35 | Daughter | — | Illinois |
| 61 | Daniel Monahan | 63 | Lodger | Pw | Ireland |
| 62 | Joseph Patterson | 40 | Head | City Of Chicago Street Dept | Illinois |
| 63 | Edith Patterson | 40 | Wife | — | Illinois |
| 64 | Thomas Patterson | 19 | Son | — | Illinois |
| 65 | Geraldine Patterson | 13 | Daughter | — | Illinois |
| 66 | Carol Patterson | 2 | Daughter | — | Illinois |
| 67 | Peter Dunn | 45 | Head | La Salle Wacker Building | Illinois |
| 68 | Margaret Dunn | 45 | Wife | — | Illinois |
| 69 | William Dunn | 10 | Son | — | Illinois |
| 70 | Albie Leen | 69 | Son | — | Ireland |
| 71 | Raymond Nelson | 18 | Lodger | — | Illinois |
| 72 | Lawrence Lynch | 41 | Head | Railroad | Illinois |
| 73 | Elizabeth Lynch | 36 | Wife | — | Illinois |
| 74 | Thomas Lynch | 1 | Son | — | Illinois |
| 75 | Patrick Lynch THIS PERSON | 32 | Head | Railroad | Illinois |
| 76 | Effie Lynch | 29 | Wife | — | Illinois |
| 77 | Lawrence Lynch | 5 | Son | — | Illinois |
| 78 | Helen Lynch | 5 | Daughter | — | Illinois |
| 79 | Emmett Shea | 38 | Head | Railroad | Michigan |
| 80 | Margaret Shea | 36 | Wife | — | 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)