WM
William Merrill — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this William Merrill across the 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a son (b.~1925), then head of a 7-person household.
Age 15
b. ~1925
Male
Son
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Merrill |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Winnetka Village |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Winnetka Village |
| Est. Birth Year | ~1925 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| Margaret Merrill | Daughter | — | 8 | ~1932 |
| Robert Merrill | Son | — | 12 | ~1928 |
| Dorothy Merrill | Daughter | — | 14 | ~1926 |
| William Merrill | Head | — | 40 | ~1900 |
| William Merrill | Son | — | 15 | ~1925 |
| Ruth Merrill | Daughter | — | 11 | ~1929 |
| Josephine Merrill | Spouse | — | 38 | ~1902 |
Census Appearances
1930
Cook, Illinois
Son, age 5
Cook, Illinois · implied b. ~1925 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Merrill |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Czechoslovakia |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Son, age 15
Cook-County, Illinois · implied b. ~1925 — 7 household members
| Surname | Merrill |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Winnetka Village |
| 1935 Residence (County) | Cook |
| Income (1939) | 0 |
| Highest Grade | 8 |
| 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 Merrill across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
William Merrill
Son · 1940 · age 15 · b. ~1925 · Illinois
★ You are viewing this record
Sibling
Ruth Merrill
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Merrill
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Merrill
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dorothy Merrill
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 — 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-t0627-00783-00702)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Francis Jr. Wilson | 17 | Son | — | Illinois |
| 2 | John M. Wilson | 14 | Son | — | Illinois |
| 3 | Eleanor L. Wilson | 12 | Daughter | — | Illinois |
| 4 | Margaret Wilson | 9 | Daughter | — | Illinois |
| 5 | William Merrill | 40 | Head | Deputy Sheriff | Illinois |
| 6 | Josephine Merrill | 38 | Wife | — | Czechoslovakia |
| 7 | William Merrill THIS PERSON | 15 | Son | — | Illinois |
| 8 | Dorothy Merrill | 14 | Daughter | — | Illinois |
| 9 | Robert Merrill | 12 | Son | — | Illinois |
| 10 | Ruth Merrill | 11 | Daughter | — | Illinois |
| 11 | Margaret Merrill | 8 | Daughter | — | Illinois |
| 12 | Arthur C. Roberg | 52 | Head | Salesman | Illinois |
| 13 | Josephine M. Roberg | 53 | Wife | — | Indiana |
| 14 | Frank Poullopos | 53 | Head | Proprietor | Greece |
| 15 | Hilda Poullopos | 50 | Wife | Saleswoman | Missouri |
| 16 | Emily O. Meier | 48 | Law-in-law | Domestic | Missouri |
| 17 | Warren S. Drisk | 62 | Head | Picture Framing | Indiana |
| 18 | Ida Drisk | 61 | Wife | Seamstress | Indiana |
| 19 | Julius Lindwall | 81 | Head | — | Sweden |
| 20 | Elise @ Lindwall | 69 | Wife | Laundress | Sweden |
| 21 | Arthur Mellstein | 26 | Lodger | Delivery Man | Illinois |
| 22 | Oscar Iverson | 76 | Head | — | Norway |
| 23 | Kristine Iverson | 74 | Wife | — | Norway |
| 24 | Clarence Iverson | 39 | Son | Gardener | Illinois |
| 25 | Oliver Iverson | 42 | Son | Gardener | Tennessee |
| 26 | Lillian Iverson | 16 | Granddaughter | — | Michigan |
| 27 | Sylvia Iverson | 14 | Granddaughter | — | Michigan |
| 28 | William Amendola | 40 | Head | Maintenance Man | Italy |
| 29 | Helen @ Amendola | 36 | Wife | — | Ohio |
| 30 | William R. Amendola | 15 | Son | — | Illinois |
| 31 | Dolores R. Amendola | 13 | Daughter | — | Illinois |
| 32 | Dudley C. Amendola | 12 | Son | — | Illinois |
| 33 | Barbara R. Amendola | 11 | Daughter | — | Illinois |
| 34 | Phillip D. Amendola | 9 | Son | — | Illinois |
| 35 | Robert C. Amendola | 9 | Son | — | Illinois |
| 36 | Thomas F. @ Gleason | 40 | Head | Broker | Illinois |
| 37 | Ruth Gleason | 36 | Wife | — | Illinois |
| 38 | Ruth B. Gleason | 7 | Daughter | — | Illinois |
| 39 | Thomas F. Jr. Gleason | 4 | Son | — | Illinois |
| 40 | Arthur Bonnet | 53 | Head | Proprietor | 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)