WI
William Irwin — 1920 US Census Record
Linked across censuses1920 United States Federal Census · St Clair, Illinois
Our Model Tree links this William Irwin across the 1910 and 1920 US Censuses in St Clair, Illinois (XGBoost, ~Confirmed) — first a head (b.~1852), then head of a 6-person household.
Age 68
b. ~1852
Male
Head
Born: Illinois
Married
1920 Census Record Details
| Census Year | 1920 |
| Location | St Clair, Illinois |
| Surname | Irwin |
| Given Name | William V. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 68 |
| Marital Status | Married |
| Birthplace | Illinois |
| Father's Birthplace | United States |
| Mother's Birthplace | Illinois |
| Additional Details | |
| Occupation | Miner |
| Industry | Coal Mine |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | O |
| Home Free/Mortgaged | M |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Miner |
| Township / Ward | Marissa Village |
| Est. Birth Year | ~1852 |
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.
6 people recorded at the same address in the 1920 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| William Irwin | Son | — | 38 | ~1882 |
| Mary Irwin | Spouse | — | 67 | ~1853 |
| William Irwin | Head | — | 68 | ~1852 |
| Rolland Irwin | Son | — | 31 | ~1889 |
| Irwin Irwin | Son | — | 28 | ~1892 |
| Albert Irwin | Son | — | 33 | ~1887 |
Census Appearances
1910
St Clair, …
Head, age 58
St Clair, Illinois · implied b. ~1852
●
Primary link
· ~Confirmed · 1 source
XGBoost
| Surname | Irwin |
| Given Name | William |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 58 |
| Marital Status | Married |
| Birthplace | Illinois |
| Years Married | 37 |
| Father's Birthplace | United States |
| Mother's Birthplace | Illinois |
| Occupation | Miner |
| Industry | Coal Mine |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | English |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1920
St Clair, …
Head, age 68
St Clair, Illinois · implied b. ~1852 — 6 household members
| Surname | Irwin |
| Given Name | William V. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 68 |
| Marital Status | Married |
| Birthplace | Illinois |
| Father's Birthplace | United States |
| Mother's Birthplace | Illinois |
| Occupation | Miner |
| Industry | Coal Mine |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | O |
| Home Free/Mortgaged | M |
| 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 William Irwin across 2 US Census years (1910 and 1920) in St Clair, Illinois, using XGBoost record linkage.
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This person
Anchor record
William Irwin
Head · 1920 · age 68 · b. ~1852 · Illinois
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1920 US Federal Census — St Clair, Illinois
Open full size
1920 US Federal Census — St Clair, Illinois
Page Contents
50 people indexed on this census page (ia:1920:14thcensusofpopu405unit:0519)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Henry C. Kunze | 34 | Head | — | Illinois |
| 52 | Amba B. Kunze | 34 | Wife | — | Missouri |
| 53 | Philip J. Rothmeier | 45 | Head | Laborer | Illinois |
| 54 | Mary J. Rothmeier | 40 | Wife | — | Illinois |
| 55 | Viola H. Rothmeier | 15 | Daughter | — | Illinois |
| 56 | Henry Church | 42 | Head | Miner | Ohio |
| 57 | Effie M. Church | 42 | Wife | — | Illinois |
| 58 | Velma V. Church | 14 | Niece | — | Illinois |
| 59 | Elmer S. Gibson | 55 | Head | Proprietor | Illinois |
| 60 | Dora S. Gibson | 51 | Wife | — | Missouri |
| 61 | Doris G. Gibson | 19 | Daughter | — | Illinois |
| 62 | Marcella M. Gibson | 13 | Daughter | — | Illinois |
| 63 | Norman L. Gibson | 25 | Son | — | Illinois |
| 64 | Robert H. White | 35 | Head | Manager | Illinois |
| 65 | Mary S. White | 31 | Wife | — | Missouri |
| 66 | Elizabeth S. White | 2 | Daughter | — | Illinois |
| 67 | William J. Nevin | 44 | Head | Secretary | Illinois |
| 68 | Della M. Nevin | 42 | Wife | — | Illinois |
| 69 | Mary J. Nevin | 89 | Head | — | Ireland |
| 70 | Lottie J. Nevin | 53 | Daughter | Sales Lady | Illinois |
| 71 | George M. Nevin | 59 | Head | President | Illinois |
| 72 | Gertie M. Nevin | 52 | Wife | — | Illinois |
| 73 | Robert Forsyth | 55 | Head | President | Scotland |
| 74 | Ava R. Forsyth | 51 | Wife | — | Illinois |
| 75 | Haller R. Forsyth | 22 | Son | Manager | Illinois |
| 76 | Millard M. Forsyth | 21 | Son | — | Illinois |
| 77 | James G. Forsyth | 16 | Son | — | Illinois |
| 78 | Fairline M. Forsyth | 12 | Daughter | — | Illinois |
| 79 | Frederick Wagner | 76 | Head | — | Hesse-Darmstadt |
| 80 | Rachel C. Wagner | 70 | Wife | — | Illinois |
| 81 | Mary B. Devoor | 75 | Sister-in-law | — | Illinois |
| 82 | Patrick Long | 70 | Roomer | Miller | Ireland |
| 83 | Rachel Thompson | 14 | Niece | — | Illinois |
| 84 | Allen Gervitt | 83 | Head | — | South Carolina |
| 85 | Ramina J. Crawford | 70 | Sister | — | Illinois |
| 86 | Mattie B. Thompson | 40 | Niece | — | Illinois |
| 87 | Hugh A. Mcmillan | 78 | Head | — | Illinois |
| 88 | Lizzie Mcmillan | 74 | Wife | — | Illinois |
| 89 | Louis Nolan | 65 | Head | Postmaster | Saxony |
| 90 | Anna G. Nolan | 53 | Wife | — | Illinois |
| 91 | Alva C. Nolan | 16 | Daughter | — | Illinois |
| 92 | William R. Klein | 29 | Step-son | Asst. Postmaster | Illinois |
| 93 | William V. Irwin THIS PERSON | 68 | Head | Miner | Illinois |
| 94 | Mary A. Irwin | 67 | Wife | — | Illinois |
| 95 | William R. Irwin | 38 | Son | Mail Clerk | Illinois |
| 96 | Albert M. Irwin | 33 | Son | Traveling Salesman | Illinois |
| 97 | Rolland E. Irwin | 31 | Son | Salesman | Illinois |
| 98 | Irwin L. Irwin | 28 | Son | Miner | Illinois |
| 99 | Thomas M. Meek | 53 | Head | Attorney | Illinois |
| 100 | Sarah L. Meek | 51 | Wife | — | Illinois |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1920 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)