WM
William Morrison — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this William Morrison across the 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a son (b.~1929), then head of a 10-person household.
Age 11
b. ~1929
Male
Son
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Morrison |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Highest Grade | No 4 |
| 1935 Residence | Same house |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Chicago City |
| Est. Birth Year | ~1929 |
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.
10 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| Sadie Morrison | Daughter | — | 19 | ~1921 |
| Rita Morrison | Daughter | — | 15 | ~1925 |
| Theresa Morrison | Daughter | — | 12 | ~1928 |
| Ann Morrison | Daughter | — | 23 | ~1917 |
| Mary Morrison | Daughter | — | 21 | ~1919 |
| Patrick Morrison | Head | — | 51 | ~1889 |
| Martin Morrison | Son | — | 24 | ~1916 |
| Joseph Morrison | Son | — | 14 | ~1926 |
| William Morrison | Son | — | 11 | ~1929 |
| Sarah Morrison | Spouse | — | 46 | ~1894 |
Census Appearances
1930
Cook, Illinois
Son, age
Cook, Illinois · implied b. ~1930 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Morrison |
| Given Name | William J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 0 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | none |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Son, age 11
Cook-County, Illinois · implied b. ~1929 — 10 household members
| Surname | Morrison |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Highest Grade | No 4 |
| 1935 Residence | Same house |
| 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 Morrison across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
William Morrison
Son · 1940 · age 11 · b. ~1929 · Illinois
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Sibling
Martin Morrison
Sibling · 1940 · age 24
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Theresa Morrison
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Morrison
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ann Morrison
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Sadie Morrison
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Rita Morrison
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Morrison
Sibling · 1940 · age 21
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-t0627-00950-00076)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Al Kroplin | 45 | Lodger | Mechanic | Illinois |
| 2 | Lee Mcdaniel | 66 | Lodger | — | Tennessee |
| 3 | Archibald Joiner | 52 | Head | Laborer | Texas |
| 4 | Helen Joiner | 33 | Wife | — | Illinois |
| 5 | Lee Joiner | 4 | Son | — | Illinois |
| 6 | Helen Joiner | 2 | Daughter | — | Illinois |
| 7 | Dorothy Joiner | 0 | Daughter | — | Illinois |
| 8 | Willie David Joiner | 47 | Head | Laborer | Texas |
| 9 | Miriam Joiner | 36 | Wife | — | North Dakota |
| 10 | David Lee Joiner | 6 | Son | — | Illinois |
| 11 | Merle Robert Joiner | 5 | Son | — | Illinois |
| 12 | James W. Joiner | 0 | Son | — | Illinois |
| 13 | John Healey | 58 | Head | Checker | Indiana |
| 14 | Elizabeth Healey | 49 | Wife | — | Illinois |
| 15 | John Jr. Healey | 28 | Son | — | Illinois |
| 16 | Oliver R. Kenney | 35 | Head | Book Binder | Missouri |
| 17 | John P. Kenney | 71 | Father | Caretaker | Missouri |
| 18 | Catherine Kenney | 67 | Mother | Housewife | Illinois |
| 19 | Patrick J. Morrison | 51 | Head | Stationary Engineer | Eire |
| 20 | Sarah E. Morrison | 46 | Wife | — | Eire |
| 21 | Martin Morrison | 24 | Son | Stationary Engineer | Illinois |
| 22 | Ann Morrison | 23 | Daughter | Stenographer | Illinois |
| 23 | Mary Morrison | 21 | Daughter | Stenographer | Illinois |
| 24 | Sadie Morrison | 19 | Daughter | Filing Clerk | Illinois |
| 25 | Rita Morrison | 15 | Daughter | — | Illinois |
| 26 | Joseph Morrison | 14 | Son | — | Illinois |
| 27 | Theresa Morrison | 12 | Daughter | — | Illinois |
| 28 | William Morrison THIS PERSON | 11 | Son | — | Illinois |
| 29 | Catherine Joyce | 69 | Head | — | Eire |
| 30 | James Joyce | 37 | Son | Proprietor | Illinois |
| 31 | Matthew Murphy | 55 | Head | Sergeant | Illinois |
| 32 | Mary Murphy | 48 | Wife | — | Illinois |
| 33 | Joyce Murphy | 18 | Son | — | Illinois |
| 34 | Billy Murphy | 17 | Son | — | Illinois |
| 35 | James Murphy | 15 | Son | — | Illinois |
| 36 | Edward Murphy | 13 | Son | — | Illinois |
| 37 | Nancy Murphy | 11 | Daughter | — | Illinois |
| 38 | Russell Mcbroom | 45 | Head | Tractor Operator | Illinois |
| 39 | Nellie Mcbroom | 50 | Wife | — | Indiana |
| 40 | Jean Mcbroom | 18 | Daughter | New Worker | 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)