EM
Elizabeth Mason — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Lasalle-County, Illinois
Our Model Tree links this Elizabeth Mason across the 1930 and 1940 US Censuses in Lasalle-County, Illinois (XGBoost, ~Confirmed) — first a spouse (b.~1897), then head of a 6-person household.
Age 43
b. ~1897
Female
Spouse
Born: Illinois
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Lasalle-County, Illinois |
| Surname | Mason |
| Given Name | Elizabeth M. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 43 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Ottawa City |
| 1935 Residence (County) | La Salle |
| Additional Details | |
| Highest Grade | H-1 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Ottawa City |
| Est. Birth Year | ~1897 |
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 Elizabeth | Age | Birth yr |
|---|---|---|---|---|
| Rita Mason | Daughter | — | 17 | ~1923 |
| Arleigh Mason | Head | — | 41 | ~1899 |
| Sharon Mason | Daughter | — | 1 | ~1939 |
| George Mason | Son | — | 19 | ~1921 |
| Doris Mason | Daughter | — | 9 | ~1931 |
| Elizabeth Mason | Spouse | — | 43 | ~1897 |
Census Appearances
1930
Lasalle, Illinois
Spouse, age 33
Lasalle, Illinois · implied b. ~1897 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mason |
| Given Name | Elizabeth M |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 33 |
| Marital Status | Married |
| Birthplace | Illinois |
| Age at First Marriage | 19 |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Germany |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Lasalle-County, Illinois
Spouse, age 43
Lasalle-County, Illinois · implied b. ~1897 — 6 household members
| Surname | Mason |
| Given Name | Elizabeth M. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 43 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Ottawa City |
| 1935 Residence (County) | La Salle |
| Highest Grade | H-1 |
| 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 Elizabeth Mason across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Elizabeth Mason
Spouse · 1940 · age 43 · b. ~1897 · Illinois
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Lasalle-County, Illinois
Open full size
1940 US Federal Census — Lasalle-County, Illinois
Page Contents
38 people indexed on this census page (nara:1940:m-t0627-00834-00350)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Arleigh V. Mason | 41 | Head | Electrician | Illinois |
| 2 | Elizabeth M. Mason THIS PERSON | 43 | Wife | — | Illinois |
| 3 | George A. Mason | 19 | Son | Truck Driver | Illinois |
| 4 | Rita A. Mason | 17 | Daughter | — | Illinois |
| 5 | Doris E. Mason | 9 | Daughter | — | Illinois |
| 6 | Sharon L. Mason | 1 | Daughter | — | Illinois |
| 7 | Earl G. Bradley | 52 | Head | Glass Inspector | Canada English |
| 8 | Meda Bradley | 52 | Wife | — | Illinois |
| 9 | Betty J. Bradley | 19 | Daughter | Stenographer | Illinois |
| 10 | Peter Kirkman | 40 | Head | Proprietor | England |
| 11 | Annetta A. Kirkman | 42 | Wife | Bookkeeper | Michigan |
| 12 | Norman J. Kirkman | 16 | Son | Truck Driver | Michigan |
| 13 | Gordon E. Kirkman | 15 | Son | — | Michigan |
| 14 | James D. Kirkman | 11 | Son | — | Michigan |
| 15 | John M. Benson | 32 | Head | Asst. Manager | Wisconsin |
| 16 | Edith C. Benson | 30 | Wife | — | Wisconsin |
| 17 | Noel M. Benson | 10 | Son | — | Wisconsin |
| 18 | Robert B. Benson | 0 | Son | — | Wisconsin |
| 20 | Marion A. Protek | 37 | Head | Glass Examiner | Poland |
| 21 | Ann Protek | 38 | Wife | — | Illinois |
| 22 | Marjorie A. Protek | 10 | Daughter | — | Illinois |
| 23 | Eleanor K. Protek | 5 | Daughter | — | Illinois |
| 24 | Josephine L. V. Protek | 0 | Daughter | — | Illinois |
| 26 | Herman Schmeihorn | 51 | Head | Glass Polisher | Pennsylvania |
| 27 | Luella M. Schmeihorn | 47 | Wife | — | Illinois |
| 28 | Fred L. Dahlem | 75 | Head | Laborer | Illinois |
| 29 | Fred G. Ii Dahlem | 36 | Son | Glass Examiner | Illinois |
| 30 | Hazel M. Dahlem | 29 | Daughter in law | — | Illinois |
| 31 | Phyllis D. Dahlem | 9 | Granddaughter | — | Illinois |
| 32 | Anita J. Dahlem | 7 | Granddaughter | — | Illinois |
| 33 | Fred L. Iii Dahlem | 6 | Grandson | — | Illinois |
| 34 | Alice E. Dahlem | 5 | Granddaughter | — | Illinois |
| 35 | Ronald R. Dahlem | 4 | Grandson | — | Illinois |
| 36 | Hoyland M. Jamison | 53 | Head | — | Ohio |
| 37 | Alice M. Jamison | 51 | Wife | — | Ohio |
| 38 | William Jamison | 17 | Son | — | Illinois |
| 39 | Alice J. Jamison | 12 | Daughter | — | Illinois |
| 40 | Andrew Benson | 70 | Head | — | Norway |
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)