MG
Mary Gross — 1930 US Census Record
Linked across censuses1930 United States Federal Census · St Louis, Missouri
Our Model Tree links this Mary Gross across the 1920, 1930 and 1940 US Censuses in St Louis, Missouri (XGBoost, ~Confirmed) — first a spouse (b.~1880), then head of a 16-person household.
Age 50
b. ~1880
Female
Spouse
Born: Missouri
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | St Louis, Missouri |
| Surname | Gross |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 50 |
| Marital Status | Married |
| Birthplace | Missouri |
| Age at First Marriage | 32 |
| Father's Birthplace | Missouri |
| Mother's Birthplace | Missouri |
| Additional Details | |
| Occupation | Laborer |
| Industry | Railroad |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
| Occupation | Laborer |
| Township / Ward | Valley Park City |
| Est. Birth Year | ~1880 |
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.
16 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Ralph Gross | Other | — | 10 | ~1920 |
| Thomas Gross | Head | — | 46 | ~1884 |
| Charles Gross | Other | — | 10 | ~1920 |
| Lulu Gross | Daughter | — | 18 | ~1912 |
| Mabbie Gross | Other | — | 30 | ~1900 |
| Dorothy Gross | Daughter | — | 10 | ~1920 |
| Anna Gross | Daughter | — | 14 | ~1916 |
| Adolph Gross | Son | — | 16 | ~1914 |
| Mabel Gross | Daughter | — | 9 | ~1921 |
| Fred Gross | Son | — | ~1930 | |
| Richard Gross | Son | — | 2 | ~1928 |
| George Gross | Son | — | 14 | ~1916 |
| Elmer Gross | Son | — | 11 | ~1919 |
| Mary Gross | Daughter | — | 7 | ~1923 |
| Irene Gross | Daughter | — | 3 | ~1927 |
| Mary Gross | Spouse | — | 50 | ~1880 |
Census Appearances
1920
St Louis, …
Spouse, age 40
St Louis, Missouri · implied b. ~1880 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Gros |
| Given Name | Mamie |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Missouri |
| Father's Birthplace | Missouri |
| Mother's Birthplace | Missouri |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
1930
St Louis, …
Spouse, age 50
St Louis, Missouri · implied b. ~1880 — 16 household members
| Surname | Gross |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 50 |
| Marital Status | Married |
| Birthplace | Missouri |
| Age at First Marriage | 32 |
| Father's Birthplace | Missouri |
| Mother's Birthplace | Missouri |
| Occupation | Laborer |
| Industry | Railroad |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
1940
St.-Louis-County, Missouri
Spouse, age 61
St.-Louis-County, Missouri · implied b. ~1879 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Gross |
| Given Name | Marie |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 61 |
| Marital Status | Married |
| Birthplace | Missouri |
| 1935 Residence (City) | Webster Groves City |
| 1935 Residence (County) | St. Louis |
| Income (1939) | 0 |
| Highest Grade | H-4 |
| 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 Gross across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Gross
Spouse · 1930 · age 50 · b. ~1880 · Missouri
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1930 US Federal Census — St Louis, Missouri
Open full size
1930 US Federal Census — St Louis, Missouri
Page Contents
50 people indexed on this census page (ia:1930:missouricensus00reel1223:0235)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Elnora Bright | 11 | Daughter | — | Missouri |
| 52 | Charlotte Bright | 9 | Daughter | — | Missouri |
| 53 | Minnie Bright | 4 | Daughter | — | Missouri |
| 54 | Raymond Ruddick | 26 | Head | Laborer | Arkansas |
| 55 | Lucille Ruddick | 24 | Wife | — | Arkansas |
| 56 | Wayne Ruddick | 7 | Son | — | Arkansas |
| 57 | Beva Ruddick | 6 | Daughter | — | Arkansas |
| 58 | Gordon Ruddick | 1 | Son | — | Arkansas |
| 59 | Harry Ruddick | 16 | Brother | — | Minnesota |
| 60 | Thomas Gross | 46 | Head | Shoemaker | Illinois |
| 61 | Mary Gross THIS PERSON | 50 | Wife | Laborer | Missouri |
| 62 | Lulu Gross | 18 | Daughter | Folder | Missouri |
| 63 | Adolph Gross | 16 | Son | — | Missouri |
| 64 | George Gross | 14 | Son | — | Missouri |
| 65 | Charles Gross | 10 | Grandson | — | Missouri |
| 66 | Ralph Gross | 10 | Grandson | — | Missouri |
| 67 | Mabbie Gross | 30 | Stepdaughter | — | Missouri |
| 68 | Anna Gross | 14 | Daughter | — | Missouri |
| 69 | Elmer Gross | 11 | Son | — | Missouri |
| 70 | Dorothy Gross | 10 | Daughter | — | Missouri |
| 71 | Mabel Gross | 9 | Daughter | — | Missouri |
| 72 | Mary Gross | 7 | Daughter | — | Missouri |
| 73 | Irene Gross | 3 | Daughter | — | Missouri |
| 74 | Richard Gross | 2 | Son | — | Missouri |
| 75 | Fred Gross | 0 | Son | — | Missouri |
| 76 | Grover Johnson | 36 | Head | Blacksmith | Missouri |
| 77 | Virgie Johnson | 31 | Wife | — | Missouri |
| 78 | Alvina Johnson | 13 | Daughter | — | Missouri |
| 79 | Vernon Johnson | 10 | Son | — | Missouri |
| 80 | Mervil Johnson | 8 | Son | — | Missouri |
| 81 | Elsie Johnson | 6 | Daughter | — | Missouri |
| 82 | Dorothy Johnson | 5 | Daughter | — | Missouri |
| 83 | Opal Johnson | 4 | Daughter | — | Missouri |
| 84 | Grover Johnson | 1 | Son | — | Missouri |
| 85 | Charles Clayton | 64 | Head | Blacksmith | Missouri |
| 86 | Lily Clayton | 53 | Wife | — | Missouri |
| 87 | Earl Clayton | 23 | Son | Mechanic | Missouri |
| 88 | Irene Clayton | 13 | Daughter | — | Missouri |
| 89 | Hazel Clayton | 11 | Daughter | — | Missouri |
| 90 | Adam Ratzesberger | 63 | Head | Laborer | Missouri |
| 91 | Lena Ratzesberger | 55 | Wife | — | Missouri |
| 92 | Thomas Pass | 26 | Roomer | Decorator | Missouri |
| 93 | Ursala Pass | 25 | Roomer | — | Missouri |
| 94 | Claud Fletcher | 30 | Head | Laborer | Missouri |
| 95 | Opal Fletcher | 22 | Wife | — | Missouri |
| 96 | Melva Fletcher | 4 | Daughter | — | Missouri |
| 97 | Calvin Fletcher | 0 | Son | — | Missouri |
| 98 | Clarence Hodges | 21 | Head | Caretaker | Missouri |
| 99 | Ruth Hodges | 18 | Wife | — | Missouri |
| 100 | Betty Hodges | 0 | Daughter | — | Missouri |
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)