WM
William Marsh — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Will-County, Illinois
Our Model Tree links this William Marsh across the 1930 and 1940 US Censuses in Will-County, Illinois (XGBoost, ~Confirmed) — first a son (b.~1927), then head of a 4-person household.
Age 13
b. ~1927
Male
Son
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Will-County, Illinois |
| Surname | Marsh |
| Given Name | William G. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Joliet Twp |
| 1935 Residence (County) | Will |
| Additional Details | |
| Highest Grade | 7 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Joliet Twp |
| Est. Birth Year | ~1927 |
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 William | Age | Birth yr |
|---|---|---|---|---|
| Helen Marsh | Spouse | — | 39 | ~1901 |
| Howard Marsh | Son | — | 14 | ~1926 |
| William Marsh | Son | — | 13 | ~1927 |
| Granville Marsh | Head | — | 44 | ~1896 |
Census Appearances
1930
Will, Illinois
Son, age 3
Will, Illinois · implied b. ~1927 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Marsh |
| Given Name | William G. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | New York |
| Mother's Birthplace | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Will-County, Illinois
Son, age 13
Will-County, Illinois · implied b. ~1927 — 4 household members
| Surname | Marsh |
| Given Name | William G. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Joliet Twp |
| 1935 Residence (County) | Will |
| Highest Grade | 7 |
| 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 William Marsh across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
William Marsh
Son · 1940 · age 13 · b. ~1927 · Illinois
★ You are viewing this record
Sibling
Howard Marsh
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Will-County, Illinois
Open full size
1940 US Federal Census — Will-County, Illinois
Page Contents
38 people indexed on this census page (nara:1940:m-t0627-00908-00871)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Virginia Weaver | 26 | Wife | Housewife | Illinois |
| 3 | Granville B. Marsh | 44 | Head | Printer | New York |
| 4 | Helen Marsh | 39 | Wife | Housewife | Illinois |
| 5 | Howard N. Marsh | 14 | Son | — | Illinois |
| 6 | William G. Marsh THIS PERSON | 13 | Son | — | Illinois |
| 7 | Herbert S. Baron | 64 | Head | — | England |
| 8 | Eva C. Baron | 64 | Wife | Housewife | Illinois |
| 9 | Ola A. Jr. Hill | 33 | Head | Lighting Engineer | Iowa |
| 10 | Rose D. Hill | 31 | Wife | Housewife | South Dakota |
| 11 | Robert C. Hill | 5 | Son | — | Illinois |
| 12 | Susan Ruth Hill | 2 | Daughter | — | Illinois |
| 13 | F. Elmer Swanabro | 44 | Head | Clerical Worker | Illinois |
| 14 | Helen Swanabro | 44 | Wife | Housewife | Illinois |
| 15 | Robert Swanabro | 15 | Son | — | Illinois |
| 16 | Helen Jean Swanabro | 12 | Daughter | — | Illinois |
| 17 | William Burt | 46 | Head | Meat Cutter | Missouri |
| 18 | Mary Burt | 38 | Wife | Store Keeper | Illinois |
| 19 | Marilyn Burt | 16 | Daughter | — | Illinois |
| 20 | William Burt | 14 | Son | — | Illinois |
| 21 | Joan Burt | 11 | Daughter | — | Illinois |
| 22 | Thomas Marsh | 71 | Head | Retired On Pension | England |
| 23 | Alice Marsh | 71 | Wife | Receiving Social Security Assistance | England |
| 24 | Edward D. Macier | 42 | Head | Caretaker | Illinois |
| 25 | Rose Macier | 38 | Wife | Housewife | Italy |
| 26 | Merton Macier | 5 | Son | — | Illinois |
| 27 | Rebecca Ulrich | 71 | Head | — | Illinois |
| 28 | Frank Ulrich | 32 | Son | Yard Clerk | Illinois |
| 29 | Richard Ulrich | 30 | Son | Office Clerk | Illinois |
| 30 | Richard Collofello | 23 | Head | General Labor | Illinois |
| 31 | Dorothy Collofello | 20 | Wife | Housewife | Illinois |
| 32 | Richard H. Collofello | 0 | Son | — | Illinois |
| 33 | Ida A. Wagner | 73 | Head | Housewife | Wisconsin |
| 34 | Joseph B. Wagner | 46 | Son | Book-Keeper | Illinois |
| 35 | Leo A. Wagner | 31 | Son | Office Clerk | Illinois |
| 36 | Edward Tatro | 66 | Head | Locomotive Engineer | Michigan |
| 37 | Jessie M. Tatro | 59 | Wife | Housewife | Illinois |
| 39 | Donald G. Morgan | 40 | Head | Salesman | Illinois |
| 40 | Nina E. Morgan | 37 | Wife | Dramatic Teacher | Michigan |
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)