MR
Mary Roth — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Lasalle-County, Illinois
Our Model Tree links this Mary Roth across the 1930 and 1940 US Censuses in Lasalle-County, Illinois (XGBoost, ~Confirmed) — first a daughter (b.~1927), then head of a 7-person household.
Age 13
b. ~1927
Female
Daughter
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Lasalle-County, Illinois |
| Surname | Roth |
| Given Name | Mary |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | R. |
| 1935 Residence (County) | La Salle |
| Additional Details | |
| Highest Grade | 7 |
| 1935 Residence | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Dayton Twp |
| Est. Birth Year | ~1927 |
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 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| John Roth | Son | — | 14 | ~1926 |
| Mary Roth | Daughter | — | 13 | ~1927 |
| William Roth | Son | — | 6 | ~1934 |
| John Roth | Head | — | 44 | ~1896 |
| Robert Roth | Son | — | 4 | ~1936 |
| Rose Roth | Spouse | — | 42 | ~1898 |
| Joe Roth | Son | — | 10 | ~1930 |
Census Appearances
1930
Lasalle, Illinois
Daughter, age 3
Lasalle, Illinois · implied b. ~1927 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Roth |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Lasalle-County, Illinois
Daughter, age 13
Lasalle-County, Illinois · implied b. ~1927 — 7 household members
| Surname | Roth |
| Given Name | Mary |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | R. |
| 1935 Residence (County) | La Salle |
| Highest Grade | 7 |
| 1935 Residence | Illinois |
| 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 Roth across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Roth
Daughter · 1940 · age 13 · b. ~1927 · Illinois
★ You are viewing this record
Sibling
Robert Roth
Sibling · 1940 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Roth
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joe Roth
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Roth
Sibling · 1940 · age 6
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 — Lasalle-County, Illinois
Open full size
1940 US Federal Census — Lasalle-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00832-00565)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Rita Marie Patrick | 15 | daughter | House Work | Illinois |
| 2 | Charlotte L Patrick | 14 | daughter | House Work | Illinois |
| 3 | Vincent H Patrick | 12 | son | — | Illinois |
| 4 | Paula H Patrick | 10 | daughter | — | Illinois |
| 5 | Hubert A Patrick | 9 | son | — | Illinois |
| 6 | Marjorie R Patrick | 7 | daughter | — | Illinois |
| 7 | Richard A Patrick | 6 | son | — | Illinois |
| 8 | Marilyn J Patrick | 4 | daughter | — | Illinois |
| 9 | Edwin J Patrick | 3 | son | — | Illinois |
| 10 | Burton E D Strait | 70 | Head | Tenant - Farmer | Illinois |
| 11 | Harriett S Strait | 57 | wife | Housewife | Illinois |
| 12 | Delphine Strait | 34 | daughter | Librarian | Illinois |
| 13 | Dorothy Strait | 32 | daughter | Housework | Illinois |
| 14 | Harriett Strait | 30 | daughter | Bookkeeper | Illinois |
| 15 | Josephine Strait | 27 | daughter | Beautician | Illinois |
| 16 | Mary Strait | 68 | Head | Housework | Illinois |
| 17 | Louis C Brady | 71 | Lodger | Retired Merchant | Illinois |
| 18 | Lelia W Brady | 65 | Lodger wife | Housework | Iowa |
| 19 | Robert W Mann | 50 | Head | Farm Laborer | Illinois |
| 20 | Daisy F Mann | 47 | wife | Housewife | Illinois |
| 21 | Dale Mann | 19 | son | Dairy Worker | Illinois |
| 22 | Kenneth Mann | 16 | son | — | Illinois |
| 23 | John J Murray | 47 | Head | Farmer | Indiana |
| 24 | Mary B Murray | 57 | sister | Housekeeper | Indiana |
| 25 | Grant Chisholm | 26 | Lodger | Farm Laborer | Illinois |
| 26 | Dan Fitzgerald | 60 | Lodger | Seed Corn Salesman | Illinois |
| 27 | Joe Roth | 40 | Head | Tenant Farmer | Illinois |
| 28 | Anne Marie Roth | 31 | wife | Housewife | Illinois |
| 29 | Joan Clara Roth | 3 | daughter | — | Illinois |
| 30 | John L Roth | 44 | Head | Tenant - Farmer | Illinois |
| 31 | Rose B Roth | 42 | wife | Housewife | Illinois |
| 32 | John L Jr Roth | 14 | son | — | Illinois |
| 33 | Mary Roth THIS PERSON | 13 | daughter | — | Illinois |
| 34 | Joe Roth | 10 | son | — | Illinois |
| 35 | William Roth | 6 | son | — | Illinois |
| 36 | Robert Roth | 4 | son | — | Illinois |
| 37 | Selmar J Lysland | 26 | Head | Tenant Farmer | Illinois |
| 38 | Mavis J Lysland | 25 | wife | Housewife | Illinois |
| 39 | Wayne D Lysland | 2 | son | — | Illinois |
| 40 | Raymond Mccormick | 44 | Head | Tenant Farmer & Trucker | Illinois |
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)