HM
Helen Mason — 1930 US Census Record
Model Tree available1930 United States Federal Census · Cook, Illinois
Our Model Tree links this Helen Mason across the 1920, 1930 and 1940 US Censuses in Cook, Illinois (XGBoost, ~Confirmed), with identified parents Arthur & Herbert — first a daughter (b.~1912), then head of a 5-person household.
Age 18
b. ~1912
Female
Daughter
Born: Illinois
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Cook, Illinois |
| Surname | Mason |
| Given Name | Helen E |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | England |
| Mother's Birthplace | Scotland |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Chicago City |
| Est. Birth Year | ~1912 |
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.
5 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Helen | Age | Birth yr |
|---|---|---|---|---|
| Nellie Mason | Other | — | 43 | ~1887 |
| Herbert Mason | Head | — | 46 | ~1884 |
| Thomas Mason | Son | — | 17 | ~1913 |
| Anthony Garcia | Other | — | 57 | ~1873 |
| Helen Mason | Daughter | — | 18 | ~1912 |
Census Appearances
1920
Cook, Illinois
Other, age 7
Cook, Illinois · implied b. ~1913 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mason |
| Given Name | Helen |
| Relationship to Head | grand-daughter |
| Sex | F |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | England |
| Mother's Birthplace | Switzerland |
| Occupation | none |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Cook, Illinois
Daughter, age 18
Cook, Illinois · implied b. ~1912 — 5 household members
| Surname | Mason |
| Given Name | Helen E |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | England |
| Mother's Birthplace | Scotland |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Daughter, age 28
Cook-County, Illinois · implied b. ~1912 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Masoni |
| Given Name | Helen |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 28 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Occupation | Bookkeeper |
| Industry | Scale Mfg. |
| Class of Worker | PW |
| Hours Worked | 35 |
| Income (1939) | 2101 |
| Highest Grade | H 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 Helen Mason across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Arthur Masoni (~0.92 confidence) and father Herbert Mason (~0.92 confidence) and mother Mary Masoni (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Arthur Masoni
b. ~1872
Source father
● Household
· direct · ~0.92
Father
Herbert Mason
b. ~1884
Source father
● Household
· direct · ~0.92
Mother
Mary Masoni
b. ~1882
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Helen Mason
Daughter · 1930 · age 18 · b. ~1912 · Illinois
★ You are viewing this record
Sibling
Thomas Mason
Sibling · 1930 · 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
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:illinoiscensus00reel424:0423)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Xone Upland | 33 | Head | Proprietor | Nebraska |
| 2 | Lulu L Upland | 34 | Wife-H | — | Nebraska |
| 3 | Phyllis Upland | 12 | Daughter | — | Nebraska |
| 4 | Wilfrid G Bassett | 58 | Head | Division Supt | Canada-French |
| 5 | Marie Bassett | 52 | Wife-H | — | Illinois |
| 6 | Margaret D Doherty | 75 | Head | — | Iowa |
| 7 | Margaret L Doherty | 35 | Daughter | Librarian | Illinois |
| 8 | Louis L Dancourt | 63 | Head | Motorman | Illinois |
| 9 | Amanda M Dancourt | 60 | Wife-H | — | Illinois |
| 10 | Frank T Sujack | 34 | Head | Physician | Illinois |
| 11 | Mary M Sujack | 30 | Wife-H | — | Iowa |
| 12 | Edwin Sujack | 3 | Son | — | Illinois |
| 13 | Joan G Sujack | 0 | Daughter | — | Illinois |
| 14 | Anna E Mcculvigh | 46 | Maid | Housemaid | Ireland-north |
| 15 | James T Kyper | 33 | Head | Superintendent | Illinois |
| 16 | Margaret E Kyper | 51 | Wife-H | — | Illinois |
| 17 | Raymond Cowan | 25 | Nephew | Ledger Clerk | Illinois |
| 18 | James G Allen | 29 | Head | Policeman | Iowa |
| 19 | Lorene E Allen | 31 | Wife-H | — | Maryland |
| 20 | Jessie Allen | 56 | Mother | — | Indiana |
| 21 | (Vacant) (Vacant) | None | (vacant) | (Vacant) | (vacant) |
| 22 | Mary A Kastner | 64 | Head-H | — | Illinois |
| 23 | Raymond G Hoffman | 29 | Head | Publisher | Illinois |
| 24 | Vera Hoffman | 31 | Wife-H | Teacher | Kansas |
| 25 | Edward Brolin | 45 | Head | Plumber | Illinois |
| 26 | Matilda A Brolin | 44 | Wife-H | — | Iowa |
| 27 | Herbert G Mason | 46 | Head | Insurance Sales | England |
| 28 | Nellie Mason | 43 | Wife-H | — | Scotland |
| 29 | Helen E Mason THIS PERSON | 18 | Daughter | — | Illinois |
| 30 | Thomas H Mason | 17 | Son | — | Illinois |
| 31 | Anthony P Garcia | 57 | Roomer | Waiter | Argentina |
| 32 | Matthew S Holman | 52 | Head | Western Representative | Iowa |
| 33 | Catherine N Holman | 49 | Wife-H | — | New York |
| 34 | Eleanor R Holman | 24 | Daughter | Teacher | New York |
| 35 | Suzanne H Holman | 22 | Daughter | Teacher | New York |
| 36 | Matthew S Holman | 11 | Son | — | New York |
| 37 | James Mcnulty | 47 | Head | Postal Clerk | England |
| 38 | Mary J Palmer | 72 | Mother-in-L | — | Scotland |
| 39 | William Mcnulty | 27 | Nephew | Chemist | Illinois |
| 40 | James J Mcnulty | 19 | Nephew | Laborer | Illinois |
| 41 | Harold L Matheson | 24 | Roomer | Chemist | Illinois |
| 42 | George E Linsley | 24 | Roomer | Chemist | Minnesota |
| 43 | John M De La Casas | 68 | Head | Estimator & Salesman | Germany |
| 44 | Sara De La Casas | 56 | Wife-H | — | Irish Free State |
| 45 | Herman Bollin | 66 | Head | — | Switzerland |
| 46 | Anna Rafter | 63 | Sister-in-L | — | Switzerland |
| 47 | Herman Jr Bollin | 27 | Son | Commercial Artist | Illinois |
| 48 | Augusta S Rafter | 57 | Sister-in-L | Governess | Switzerland |
| 49 | Godfrey C Gubbins | 54 | Head | Accountant | Canada-French |
| 50 | Martha A Gubbins | 54 | Wife-H | — | Canada-French |
Pedigree Summary
Helen + 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 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)