MR
Mary Roach — 1940 US Census Record
Linked across censuses1940 United States Federal Census · St.-Louis-City-County, Missouri
Our Model Tree links this Mary Roach across the 1930 and 1940 US Censuses in St.-Louis-City-County, Missouri (XGBoost, ~Confirmed) — first a daughter (b.~1927), then head of a 11-person household.
Age 13
b. ~1927
Female
Daughter
Born: Missouri
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | St.-Louis-City-County, Missouri |
| Surname | Roach |
| Given Name | Mary Jane |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Missouri |
| 1935 Residence (City) | St. Louis City |
| 1935 Residence (County) | St. Louis City |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
| Township / Ward | St Louis City |
| 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.
11 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Florence Roach | Daughter | — | 8 | ~1932 |
| Veronica Roach | Daughter | — | 2 | ~1938 |
| Mary Roach | Daughter | — | 13 | ~1927 |
| Gertrude Roach | Daughter | — | 22 | ~1918 |
| William Roach | Head | — | 48 | ~1892 |
| Glennon Roach | Son | — | 18 | ~1922 |
| Donald Roach | Son | — | 10 | ~1930 |
| William Roach | Son | — | 19 | ~1921 |
| Bernard Roach | Son | — | 15 | ~1925 |
| Vincent Roach | Son | — | 24 | ~1916 |
| Mary Roach | Spouse | — | 46 | ~1894 |
Census Appearances
1930
St Louis, …
Daughter, age 3
St Louis, Missouri · implied b. ~1927 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Roach |
| Given Name | Mary Jane |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Missouri |
| Father's Birthplace | Missouri |
| Mother's Birthplace | Missouri |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
1940
St.-Louis-City-County, Missouri
Daughter, age 13
St.-Louis-City-County, Missouri · implied b. ~1927 — 11 household members
| Surname | Roach |
| Given Name | Mary Jane |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Missouri |
| 1935 Residence (City) | St. Louis City |
| 1935 Residence (County) | St. Louis City |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
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 Roach across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Roach
Daughter · 1940 · age 13 · b. ~1927 · Missouri
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Sibling
Donald Roach
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Roach
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Gertrude Roach
Sibling · 1940 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Glennon Roach
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Bernard Roach
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Florence Roach
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Veronica Roach
Sibling · 1940 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Vincent Roach
Sibling · 1940 · age 24
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 — St.-Louis-City-County, Missouri
Open full size
1940 US Federal Census — St.-Louis-City-County, Missouri
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02184-00115)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Sadie F. Seitz | 61 | Head | — | Illinois |
| 2 | Ollie Zacheis | 63 | Lodger | Machine Operator | Illinois |
| 3 | James C. Roach | 26 | Head | Yardman | Missouri |
| 4 | Francis M. Roach | 25 | Wife | — | Missouri |
| 5 | Mary Ann Roach | 2 | Daughter | — | Missouri |
| 6 | Patricia Roach | 0 | Daughter | — | Missouri |
| 7 | Minnie Jenkins | 42 | Head | Clerk | Indiana |
| 8 | William Roach | 48 | Head | Watchman | Missouri |
| 9 | Mary C. Roach | 46 | Wife | — | Missouri |
| 10 | Vincent R. Roach | 24 | Son | Elevator Operator | Missouri |
| 11 | Gertrude A. Roach | 22 | Daughter | Paint Bottoms | Missouri |
| 12 | William A. Roach | 19 | Son | Inspector | Missouri |
| 13 | Glennon C. Roach | 18 | Son | New Worker | Missouri |
| 14 | Bernard J. Roach | 15 | Son | — | Missouri |
| 15 | Mary Jane Roach THIS PERSON | 13 | Daughter | — | Missouri |
| 16 | Donald Roach | 10 | Son | — | Missouri |
| 17 | Florence Roach | 8 | Daughter | — | Missouri |
| 18 | Veronica Roach | 2 | Daughter | — | Missouri |
| 19 | Julia Moriarty | 41 | Head | Helper | Ireland |
| 20 | Mary L. Moriarty | 19 | Daughter | Waitress | Missouri |
| 21 | James A. Moriarty | 15 | Son | — | Missouri |
| 22 | Robert Pringle | 22 | Head | — | Missouri |
| 23 | Della Pringle | 53 | Wife | — | Missouri |
| 24 | Rosa M. Pringle | 20 | Daughter | Cashier | Missouri |
| 25 | James D. Pringle | 12 | Son | — | Missouri |
| 26 | Joseph Borisuk | 44 | Head | Steel Cutter | Russia |
| 27 | Josephine Borisuk | 44 | Wife | — | Austria |
| 28 | Stella Borisuk | 20 | Daughter | Kitchen Worker | Missouri |
| 29 | Sophie Borisuk | 18 | Daughter | New Worker | Missouri |
| 30 | Mary Borisuk | 16 | Daughter | — | Missouri |
| 31 | Julius Borisuk | 11 | Son | — | Missouri |
| 32 | Augustina Borisuk | 5 | Daughter | — | Missouri |
| 33 | Irene Borisuk | 3 | Daughter | — | Missouri |
| 34 | Agnes Borisuk | 1 | Daughter | — | Missouri |
| 35 | Arron J. Lester | 39 | Head | Coach Cleaner | Mississippi |
| 36 | Elsie I. Lester | 62 | Head | House Keeper | Mississippi |
| 37 | Georgia Reebe | 36 | Head | — | Alabama |
| 38 | James Smith | 17 | Son | — | Missouri |
| 39 | Leroy Smith | 15 | Son | — | Missouri |
| 40 | William Smith | 13 | Son | — | Arkansas |
Related Census Records
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)