MC
Margaret Cook — 1940 US Census Record
Model Tree available1940 United States Federal Census · Lucas-County, Ohio
Our Model Tree links this Margaret Cook across the 1920, 1930 and 1940 US Censuses in Lucas-County, Ohio (XGBoost, ~Confirmed), with identified parents Fred & Clyde — first a daughter (b.~1917), then head of a 6-person household.
Age 23
b. ~1917
Female
Daughter
Born: Ohio
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Lucas-County, Ohio |
| Surname | Cook |
| Given Name | Margaret G. |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Toledo |
| 1935 Residence (County) | Lucas |
| Additional Details | |
| Occupation | Librarian |
| Industry | Pub Library |
| Class of Worker | GW |
| Hours Worked | 40 |
| Income (1939) | 550 |
| Highest Grade | C 5 |
| 1935 Residence | Same house |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
| Occupation | Librarian |
| Township / Ward | Toledo |
| Est. Birth Year | ~1917 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Margaret | Age | Birth yr |
|---|---|---|---|---|
| Margaret Cook | Daughter | — | 23 | ~1917 |
| Fred Cook | Head | — | 56 | ~1884 |
| Howard Cook | Son | — | 22 | ~1918 |
| Roy Cook | Son | — | 17 | ~1923 |
| Henry Cook | Son | — | 19 | ~1921 |
| Caroline Cook | Spouse | — | 46 | ~1894 |
Census Appearances
1920
Lucas, Ohio
Daughter, age 2
Lucas, Ohio · implied b. ~1918 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cook |
| Given Name | Margaret E |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1930
Lucas, Ohio
Daughter, age 12
Lucas, Ohio · implied b. ~1918 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cook |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1940
Lucas-County, Ohio
Daughter, age 23
Lucas-County, Ohio · implied b. ~1917 — 6 household members
| Surname | Cook |
| Given Name | Margaret G. |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Toledo |
| 1935 Residence (County) | Lucas |
| Occupation | Librarian |
| Industry | Pub Library |
| Class of Worker | GW |
| Hours Worked | 40 |
| Income (1939) | 550 |
| Highest Grade | C 5 |
| 1935 Residence | Same house |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
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 Cook across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Fred Cook (~0.92 confidence) and father Clyde Cook (~0.92 confidence) and mother Mary Cook (~0.92 confidence) and mother Mary Cook (~0.92 confidence) and mother Caroline Cook (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Fred Cook
b. ~1884
Source father
● Household
· direct · ~0.92
Father
Clyde Cook
b. ~1889
Source father
● Household
· direct · ~0.92
Mother
Mary Cook
b. ~1893
Source mother
● Household
· direct · ~0.92
Mother
Mary Cook
b. ~1893
Source mother
● Household
· direct · ~0.92
Mother
Caroline Cook
b. ~1894
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Margaret Cook
Daughter · 1940 · age 23 · b. ~1917 · Ohio
★ You are viewing this record
Sibling
Howard Cook
Sibling · 1940 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Henry Cook
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Roy Cook
Sibling · 1940 · age 17
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 — Lucas-County, Ohio
Open full size
1940 US Federal Census — Lucas-County, Ohio
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03266-00183)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Howard | 18 | nephew | — | Ohio |
| 2 | Joseph J. Morrissey | 51 | head | Janitor | Ohio |
| 3 | Julia M. Morrissey | 44 | wife | — | Ohio |
| 4 | Mary E. Morrissey | 15 | daughter | — | California |
| 5 | Gertrude G. Morrissey | 15 | daughter | — | California |
| 6 | Louis Hentges | 38 | head | Machinist | Illinois |
| 7 | Flora M. Hentges | 29 | wife | — | Illinois |
| 8 | Ronald L. Hentges | 5 | son | — | Ohio |
| 9 | Ruth M. Hentges | 3 | daughter | — | Ohio |
| 10 | Shirley L. Enright | 15 | sister-in-law | — | Illinois |
| 11 | Normal W. Tefft | 40 | head | Chauffeur | Ohio |
| 12 | Irene P. Tefft | 39 | wife | — | Ohio |
| 13 | Marvin W. Tefft | 18 | son | — | Ohio |
| 14 | Betty J. Tefft | 16 | daughter | — | Ohio |
| 15 | Eugene R. Tefft | 15 | son | — | Ohio |
| 16 | Viola N. Tefft | 8 | daughter | — | Ohio |
| 17 | Fred Cook | 56 | head | Salesman | Ohio |
| 18 | Caroline A. Cook | 46 | wife | — | Ohio |
| 19 | Howard E. Cook | 22 | son | — | Ohio |
| 20 | Margaret G. Cook THIS PERSON | 23 | daughter | Librarian | Ohio |
| 21 | Henry D. Cook | 19 | son | — | Ohio |
| 22 | Roy F. Cook | 17 | son | — | Ohio |
| 23 | Joseph L. Guerin | 70 | head | Meat Cutter | Ohio |
| 24 | Mary Ann Guerin | 67 | wife | — | Ohio |
| 25 | Kathleen De Vanna | 22 | grand-dau. | Stenographer | Ohio |
| 26 | Lee K. Shake | 38 | head | Insulator | Indiana |
| 27 | Bessie L. Shake | 38 | wife | — | Indiana |
| 28 | Albert E. Shake | 18 | son | Delivery Man | Indiana |
| 29 | James P. Shake | 16 | son | — | Indiana |
| 30 | Robert L. Shake | 15 | son | — | Indiana |
| 31 | Donald K. Shake | 6 | son | — | Indiana |
| 32 | Wm. R. Bates | 38 | head | Shipping Clk. | Ohio |
| 33 | Garneta Bates | 37 | wife | — | Ohio |
| 34 | Wm. F. Bates | 15 | son | — | Ohio |
| 35 | Juanita M. Bates | 14 | daughter | — | Ohio |
| 36 | Wm. Rev. Brenner | 61 | head | Pastor | Michigan |
| 37 | Ruth Brenner | 42 | sister-in-law | House-Keeper | Michigan |
| 38 | Carlene M. Brenner | 16 | niece | — | Michigan |
| 39 | Norman Brenner | 15 | nephew | — | Michigan |
| 40 | Anna Dietzel | 86 | lodger | Retired | New Jersey |
Related Census Records
Pedigree Summary
Margaret + 3 siblings
Gen 1 · 5 parents
~0.92
Max depth 4 (1900–1950 window)
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)