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Margaret Morgan — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Margaret Morgan across the 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a daughter (b.~1924), then head of a 9-person household.
Age 16
b. ~1924
Female
Daughter
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Morgan |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Highest Grade | H-1 |
| 1935 Residence | Same Place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Chicago City |
| Est. Birth Year | ~1924 |
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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Margaret | Age | Birth yr |
|---|---|---|---|---|
| Florence Morgan | Daughter | — | 7 | ~1933 |
| Lucille Morgan | Daughter | — | 25 | ~1915 |
| Margaret Morgan | Daughter | — | 16 | ~1924 |
| Dolores Morgan | Daughter | — | 17 | ~1923 |
| John Morgan | Head | — | 46 | ~1894 |
| George Morgan | Son | — | 20 | ~1920 |
| John Morgan | Son | — | 14 | ~1926 |
| Matthew Morgan | Son | — | 18 | ~1922 |
| Florence Morgan | Spouse | — | 41 | ~1899 |
Census Appearances
1930
Cook, Illinois
Daughter, age 5
Cook, Illinois · implied b. ~1925 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Morgan |
| Given Name | Margaret |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Indiana |
| Occupation | none |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Daughter, age 16
Cook-County, Illinois · implied b. ~1924 — 9 household members
| Surname | Morgan |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Highest Grade | H-1 |
| 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 Margaret Morgan across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Margaret Morgan
Daughter · 1940 · age 16 · b. ~1924 · Illinois
★ You are viewing this record
Sibling
Dolores Morgan
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lucille Morgan
Sibling · 1940 · age 25
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Morgan
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
George Morgan
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Florence Morgan
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Matthew Morgan
Sibling · 1940 · age 18
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-t0627-00941-00585)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Paul Rieljak | 39 | Head | Blacksmith | Illinois |
| 2 | Rose Rieljak | 15 | Daughter | — | Illinois |
| 3 | Minerva Rieljak | 14 | Daughter | — | Illinois |
| 4 | Katherine Rieljak | 10 | Daughter | — | Illinois |
| 5 | John Svalina | 62 | Head | Main Helper | Jugoslavia |
| 6 | Mary Svalina | 53 | Wife | — | Jugoslavia |
| 7 | William L. Martin | 30 | Son-in-law | Crane Operator | Illinois |
| 8 | Matilda Martin | 24 | Daughter | — | Illinois |
| 9 | Leo John Martin | 3 | Son | — | Illinois |
| 10 | Andrew Muszynski | 40 | Head | Foreman | Illinois |
| 11 | Daisy Muszynski | 35 | Wife | — | Illinois |
| 12 | Lucille Muszynski | 14 | Daughter | — | Illinois |
| 13 | Adele Muszynski | 12 | Daughter | — | Illinois |
| 14 | Andrew Muszynski | 10 | Son | — | Illinois |
| 15 | Ronald Muszynski | 8 | Son | — | Illinois |
| 16 | Casimer Walewski | 68 | Father-in-law | Watchman | Poland |
| 17 | Alexandra Walewski | 61 | Mother-in-law | — | Poland |
| 18 | John Morgan | 46 | Head | Service Driver | Illinois |
| 19 | Florence Morgan | 41 | Wife | — | Illinois |
| 20 | Lucille Morgan | 25 | Daughter | Maid | Illinois |
| 21 | George Morgan | 20 | Son | Helper | Illinois |
| 22 | Matthew Morgan | 18 | Son | New Worker | Illinois |
| 23 | Dolores Morgan | 17 | Daughter | Maid | Illinois |
| 24 | Margaret Morgan THIS PERSON | 16 | Daughter | — | Illinois |
| 25 | John Morgan | 14 | Son | — | Illinois |
| 26 | Florence Morgan | 7 | Daughter | — | Illinois |
| 27 | Andrew Cieszynski | 39 | Head | Millwright Helper | Illinois |
| 28 | Angeline Cieszynski | 35 | Wife | — | Illinois |
| 29 | Raymond Cieszynski | 15 | Son | — | Illinois |
| 30 | Veronica Cieszynski | 12 | Daughter | — | Illinois |
| 31 | Rita Cieszynski | 11 | Daughter | — | Illinois |
| 32 | Geraldine Cieszynski | 5 | Daughter | — | Illinois |
| 33 | Carl Cieszynski | 1 | Son | — | Illinois |
| 34 | Henry Valley | 59 | Head | — | Italy |
| 35 | Sophia Valley | 43 | Wife | — | Illinois |
| 36 | Helen Samek | 25 | Step-daughter | Clerical Worker | Illinois |
| 37 | Annette Samek | 20 | Step-daughter | New Worker | Illinois |
| 38 | Casimer Samek | 16 | Step-son | — | Illinois |
| 39 | Samuel Pavich | 46 | Head | Millwright | Jugoslavia |
| 40 | Ann Pavich | 51 | Wife | — | Jugoslavia |
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)