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Margaret Boyd — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Margaret Boyd across the 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a daughter (b.~1927), then head of a 10-person household.
Age 13
b. ~1927
Female
Daughter
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Boyd |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Highest Grade | No 6 |
| 1935 Residence | Same house |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Chicago |
| 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.
10 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Margaret | Age | Birth yr |
|---|---|---|---|---|
| Rose Boyd | Daughter | — | 4 | ~1936 |
| George Boyd | Son | — | 8 | ~1932 |
| Dorothy Boyd | Daughter | — | 10 | ~1930 |
| Amelia Boyd | Spouse | — | 40 | ~1900 |
| Margaret Boyd | Daughter | — | 13 | ~1927 |
| Robert Boyd | Son | — | 15 | ~1925 |
| June Boyd | Daughter | — | 16 | ~1924 |
| Catherine Boyd | Daughter | — | 18 | ~1922 |
| Robert Boyd | Head | — | 46 | ~1894 |
| William Boyd | Son | — | 7 | ~1933 |
Census Appearances
1930
Cook, Illinois
Daughter, age 3
Cook, Illinois · implied b. ~1927 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Boyd |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Daughter, age 13
Cook-County, Illinois · implied b. ~1927 — 10 household members
| Surname | Boyd |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Highest Grade | No 6 |
| 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 Margaret Boyd across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Margaret Boyd
Daughter · 1940 · age 13 · b. ~1927 · Illinois
★ You are viewing this record
Sibling
June Boyd
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Boyd
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Boyd
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dorothy Boyd
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Rose Boyd
Sibling · 1940 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Catherine Boyd
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
George Boyd
Sibling · 1940 · age 8
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-t0627-00948-00858)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Karl Kuchar | 57 | Head | Carpenter | Bohemia |
| 2 | James O'Toole | 63 | Head | Plumber | Pennsylvania |
| 3 | Mary O'Toole | 63 | Wife | — | Pennsylvania |
| 4 | Stanley Augustyniak | 67 | Head | — | Germany |
| 5 | Joseph Augustyniak | 29 | Son | Coiler | Illinois |
| 6 | Eleanor Augustyniak | 26 | Daughter | Crater | Illinois |
| 7 | Anthony Augustyniak | 23 | Son | Helper | Illinois |
| 8 | Frank Augustyniak | 21 | Son | — | Illinois |
| 9 | John Augustyniak | 19 | Son | — | Illinois |
| 10 | Harry Van Buren | 51 | Head | Night Watchman | Holland |
| 11 | Mark Van Buren | 25 | Son | Bookkeeper | Illinois |
| 12 | Aldona Van Buren | 23 | Daughter | — | Illinois |
| 13 | Jimmy Van Buren | 20 | Daughter | Packer | Illinois |
| 14 | Eleanor Van Buren | 18 | Daughter | Packer | Illinois |
| 15 | Harriett Van Buren | 14 | Daughter | — | Illinois |
| 16 | Elizabeth Van Buren | 13 | Daughter | — | Illinois |
| 17 | Michael Kruella | 54 | Head | Pipe Fitter | Austria |
| 18 | Anna Kruella | 54 | Wife | — | Austria |
| 19 | Doris Kruella | 10 | Grandchild | — | Illinois |
| 20 | James London | 62 | Head | Labor | Missouri |
| 21 | Ethel London | 40 | Wife | — | Missouri |
| 22 | Nellie London | 16 | Daughter | — | Illinois |
| 23 | John London | 21 | Son-in-law | Checker | Michigan |
| 24 | Martin London | 12 | Son | — | Illinois |
| 25 | Robert Boyd | 46 | Head | Truck Driver | Iowa |
| 26 | Amelia Boyd | 40 | Wife | — | Illinois |
| 27 | Catherine Boyd | 18 | Daughter | Laborer | Illinois |
| 28 | June Boyd | 16 | Daughter | — | Illinois |
| 29 | Robert Boyd | 15 | Son | — | Illinois |
| 30 | Margaret Boyd THIS PERSON | 13 | Daughter | — | Illinois |
| 31 | Dorothy Boyd | 10 | Daughter | — | Illinois |
| 32 | George Boyd | 8 | Son | — | Illinois |
| 33 | William Boyd | 7 | Son | — | Illinois |
| 34 | Rose Boyd | 4 | Daughter | — | Illinois |
| 35 | Anthony Patrick | 25 | Head | Iron Welder | New York |
| 36 | Rose Patrick | 23 | Wife | — | Illinois |
| 37 | Anthony Patrick | 1 | Son | — | Illinois |
| 38 | Robert Hayes | 22 | Lodger | Driver | Illinois |
| 39 | Edith Hayes | 30 | Lodger | — | Illinois |
| 40 | Donald Hayes | 6 | Lodger | — | 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)