GC
Grace Cook — 1930 US Census Record
Model Tree available1930 United States Federal Census · Cook, Illinois
Our Model Tree links this Grace Cook across the 1910, 1920 and 1930 US Censuses in Cook, Illinois (XGBoost, ~Confirmed), with identified parents William & William — first a daughter (b.~1905), then head of a 7-person household.
Age 25
b. ~1905
Female
Daughter
Born: Illinois
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Cook, Illinois |
| Surname | Cook |
| Given Name | Grace |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Penn. |
| Mother's Birthplace | Virginia |
| Additional Details | |
| Occupation | Stenographer |
| Industry | Patent Lawyer |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Stenographer |
| Township / Ward | Chicago City |
| Est. Birth Year | ~1905 |
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 1930 census.
| Name | Relation to head | Relative to Grace | Age | Birth yr |
|---|---|---|---|---|
| Harry Cook | Son | — | 23 | ~1907 |
| William Cook | Head | — | 51 | ~1879 |
| Martin Cook | Son | — | 21 | ~1909 |
| Grace Cook | Daughter | — | 25 | ~1905 |
| Irma Cook | Daughter | — | 27 | ~1903 |
| Minnie Cook | Spouse | — | 54 | ~1876 |
| Mary Cook | Daughter | — | 18 | ~1912 |
Census Appearances
1910
Cook, Illinois
Daughter, age 6
Cook, Illinois · implied b. ~1904 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cook |
| Given Name | Grace E |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 6 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Virginia |
| Speaks English | English |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1920
Cook, Illinois
Daughter, age 15
Cook, Illinois · implied b. ~1905 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cook |
| Given Name | Grace |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Virginia |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Cook, Illinois
Daughter, age 25
Cook, Illinois · implied b. ~1905 — 7 household members
| Surname | Cook |
| Given Name | Grace |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Penn. |
| Mother's Birthplace | Virginia |
| Occupation | Stenographer |
| Industry | Patent Lawyer |
| Class of Worker | W |
| Can Read/Write | Yes |
| 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 Grace Cook across 3 US Census years (1910, 1920 and 1930) in Cook, Illinois, using XGBoost record linkage. Identified parents: father William Cook (~0.92 confidence) and father William Cook (~0.92 confidence) and father William Cook (~0.92 confidence) and mother Minnie Cook (~0.92 confidence) and mother Minnie Cook (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
William Cook
b. ~1879
Source father
● Household
· direct · ~0.92
Father
William Cook
b. ~1878
Source father
● Household
· direct · ~0.92
Father
William Cook
b. ~1879
Source father
● Household
· direct · ~0.92
Mother
Minnie Cook
b. ~1876
Source mother
● Household
· direct · ~0.92
Mother
Minnie Cook
b. ~1877
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Grace Cook
Daughter · 1930 · age 25 · b. ~1905 · Illinois
★ You are viewing this record
Sibling
Irma Cook
Sibling · 1930 · age 27
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Cook
Sibling · 1930 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Harry Cook
Sibling · 1930 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Martin Cook
Sibling · 1930 · 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
1930 US Federal Census — Cook, Illinois
Open full size
1930 US Federal Census — Cook, Illinois
Page Contents
50 people indexed on this census page (ia:1930:illinoiscensus00reel462:1057)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | John Jr. Buckley | 16 | Grandson | None | Illinois |
| 52 | Patrick Mulvihill | 38 | Head | Conductor | Irish Free State |
| 53 | Mary H. Mulvihill | 25 | Wife | None | Irish Free State |
| 54 | Tom Culhane | 21 | Brother-in-law | Guard | Irish Free State |
| 55 | Bridie Culhane | 23 | Sister-in-law | Stitcher | Irish Free State |
| 56 | Patrick Culhane | 20 | Brother-in-law | Order Clerk | Irish Free State |
| 57 | Evan Roberts | 67 | Head | Carpenter | North Wales |
| 58 | Ellen H. Roberts | 68 | Wife | None | Wales |
| 59 | Florence Roberts | 29 | Daughter | Bookkeeper | Illinois |
| 60 | Michael D. Foley | 51 | Head | Fireman | Illinois |
| 61 | Anna L. H. Foley | 40 | Wife | None | Illinois |
| 62 | Johanna Williams | 69 | Mother-in-law | None | Wisconsin |
| 63 | George Brems | 50 | Roomer | Bookkeeper | Scotland |
| 64 | Gordon Hacking | 63 | Head | Conductor | Canada English |
| 65 | Mary H. Hacking | 63 | Wife | None | Canada English |
| 66 | Lillian Agor | 33 | Daughter | None | Michigan |
| 67 | Daniel N. Agor | 34 | Son-in-law | Broker | New Jersey |
| 68 | Peter Reuland | 64 | Head | Clerk | Illinois |
| 69 | Agnes H. Reuland | 62 | Wife | None | Illinois |
| 70 | Clement Reuland | 21 | Son | None | Illinois |
| 71 | Thomas H. Hurt | 31 | Head | Clerk | Illinois |
| 72 | Celia H. Hurt | 31 | Wife | None | Illinois |
| 73 | Thomas N. Hurt | 5 | Son | — | Illinois |
| 74 | Robt. Edw. Hurt | 3 | Son | — | Illinois |
| 75 | William Cook | 51 | Head | Engineer | Pennsylvania |
| 76 | Minnie H. Cook | 54 | Wife | None | Virginia |
| 77 | Irma Cook | 27 | Daughter | Stenographer | Illinois |
| 78 | Grace Cook THIS PERSON | 25 | Daughter | Stenographer | Illinois |
| 79 | Harry Cook | 23 | Son | Electrician | Illinois |
| 80 | Martin Cook | 21 | Son | None | Illinois |
| 81 | Mary Cook | 18 | Daughter | None | Illinois |
| 82 | William Kolnsberg | 42 | Head | Engineer | Germany |
| 83 | Ruth H. Kolnsberg | 38 | Wife | None | Illinois |
| 84 | Elizabeth Kolnsberg | 18 | Daughter | None | Illinois |
| 85 | Marian Kolnsberg | 10 | Daughter | None | Illinois |
| 86 | Nora Buckley | 50 | Boarder | Dressmaker | Illinois |
| 87 | Edward Savisch | 43 | Head | Machinist | Illinois |
| 88 | Grace H. Savisch | 41 | Wife | None | Illinois |
| 89 | Lucile Savisch | 13 | Daughter | None | Illinois |
| 90 | Paul Lavrenz | 73 | Father-in-law | None | Germany |
| 91 | Caroline Lavrenz | 75 | Mother-in-law | None | Germany |
| 92 | Mary Hayden | 65 | Head | None | Illinois |
| 93 | Alice Hayden | 43 | Daughter | Clerk | Illinois |
| 94 | Florence F. Hayden | 31 | Son | Policeman | Illinois |
| 95 | Garrett Pierce | 51 | Head | Conductor | Irish Free State |
| 96 | Mary H. Pierce | 52 | Wife | None | Irish Free State |
| 97 | Garrett Jr. Pierce | 18 | Son | Special Delivery | Illinois |
| 98 | John Pierce | 14 | Son | None | Illinois |
| 99 | Richard Pierce | 12 | Son | None | Illinois |
| 100 | Vital M. Leclair | 70 | Head | Wood Carver | Canada French |
Related Census Records
Pedigree Summary
Grace + 4 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 1930 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)