MP
Mary Phillips — 1940 US Census Record
Model Tree available1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Mary Phillips across the 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed), with identified parents Thomas & H — first a daughter (b.~1910), then head of a 3-person household.
Age 30
b. ~1910
Female
Daughter
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Phillips |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 30 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Occupation | Social Worker |
| Industry | Cook County |
| Class of Worker | GW |
| Hours Worked | 40 |
| Income (1939) | 1500 |
| Highest Grade | C 4 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Social Worker |
| Township / Ward | Chicago City |
| Est. Birth Year | ~1910 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Phillips | Daughter | — | 30 | ~1910 |
| H Phillips | Head | — | 64 | ~1876 |
| Maurice Phillips | Son | — | 38 | ~1902 |
Census Appearances
1920
Cook, Illinois
Daughter, age 9
Cook, Illinois · implied b. ~1911 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Phillips |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | Illinois |
| Naturalization Status | Naturalized |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Ireland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Cook, Illinois
Daughter, age 20
Cook, Illinois · implied b. ~1910 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Phillip |
| Given Name | Mary |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Illinois |
| Age at First Marriage | 20 |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Irish-Free State |
| Occupation | operator |
| Industry | Telephone Co. |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Daughter, age 30
Cook-County, Illinois · implied b. ~1910 — 3 household members
| Surname | Phillips |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 30 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Occupation | Social Worker |
| Industry | Cook County |
| Class of Worker | GW |
| Hours Worked | 40 |
| Income (1939) | 1500 |
| Highest Grade | C 4 |
| 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 Mary Phillips across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Thomas Phillip (~0.92 confidence) and father H Phillips (~0.92 confidence) and mother Kate Phillips (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Thomas Phillip
b. ~1884
Source father
● Household
· direct · ~0.92
Father
H Phillips
b. ~1876
Source father
● Household
· direct · ~0.92
Mother
Kate Phillips
b. ~1878
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Phillips
Daughter · 1940 · age 30 · b. ~1910 · Illinois
★ You are viewing this record
Sibling
Maurice Phillips
Sibling · 1940 · age 38
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-t0627-00953-00539)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Mandal Ratajczak | 44 | Wife | — | Illinois |
| 2 | Stephen Ratajczak | 47 | Head | Printer | Illinois |
| 3 | Chester Ratajczak | 21 | Son | Cost Clerk | Illinois |
| 4 | Loretta Ratajczak | 17 | Daughter | — | Illinois |
| 5 | Wanda Ratajczak | 10 | Daughter | — | Illinois |
| 6 | Max Tucker | 46 | Head | Salesman | Russia |
| 7 | Celia Tucker | 48 | Wife | — | Russia |
| 8 | Marvin Tucker | 23 | Son | Clerk - Retail | Illinois |
| 9 | Bert Tucker | 19 | Son | — | Illinois |
| 10 | Ella Gerber | 77 | Mother | — | Russia |
| 11 | Melvin J. Nady | 47 | Head | Police Sergeant | Illinois |
| 12 | Annie Nady | 56 | Wife | — | Illinois |
| 13 | Drenches Pastuszak | 39 | Step Son | Truck Driver | Illinois |
| 14 | William Bonnette | 35 | Head | Boiler Maker | Illinois |
| 15 | Constance Bonnette | 26 | Wife | — | Illinois |
| 16 | Diane Bonnette | 5 | Daughter | — | Illinois |
| 17 | Melvin Bonnette | 1 | Son | — | Illinois |
| 18 | Walter Ketter | 49 | Head | Foreman | Illinois |
| 19 | Mae Chappell | 50 | Housekeeper | Housekeeper | Illinois |
| 20 | Francis Duffert | 27 | Lodger | Accountant | Illinois |
| 21 | Stanley Frankiewicz | 56 | Head | Beef Boner | Poland |
| 22 | Helen Frankiewicz | 52 | Wife | — | Michigan |
| 23 | Eugene Frankiewicz | 31 | Son | Beef Boner | Illinois |
| 24 | Loretta Frankiewicz | 21 | Daughter | Billing Machine | Illinois |
| 25 | Betty Dugan | 47 | Head | Packing | Illinois |
| 26 | Mary Dugan | 52 | Sister | Special Police | Illinois |
| 27 | Della Dugan | 45 | Sister | — | Illinois |
| 28 | Margaret Dugan | 46 | Sister | Cook | Illinois |
| 29 | John Bowler | 36 | Head | Fireman - City | Illinois |
| 30 | Gertrude Bowler | 35 | Wife | Stenographer | Illinois |
| 31 | Catherine Day | 74 | Head | — | Illinois |
| 32 | Thomas Day | 50 | Son | Investigator | Illinois |
| 33 | Helen Day | 38 | Daughter | High School Teacher | Illinois |
| 34 | Catherine Ryan | 66 | Head | — | Ireland |
| 35 | William Ryan | 39 | Son | Supervisor | Illinois |
| 36 | H. E. Dr. Phillips | 64 | Head | Dentist | Illinois |
| 37 | Mary Phillips THIS PERSON | 30 | Daughter | Social Worker | Illinois |
| 38 | Maurice Phillips | 38 | Son | Credit Man | Michigan |
| 39 | L. J. Dr. Phillips | 56 | Head | Dentist | Illinois |
| 40 | Madeline Phillips | 54 | Wife | — | Illinois |
Pedigree Summary
Mary + 1 sibling
Gen 1 · 3 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)