MC
Mary Cowan — 1930 US Census Record
Linked across censuses1930 United States Federal Census · St Louis, Missouri
Our Model Tree links this Mary Cowan across the 1930 and 1940 US Censuses in St Louis, Missouri (XGBoost, ~Confirmed) — first a spouse (b.~1877), then head of a 6-person household.
Age 53
b. ~1877
Female
Spouse
Born: Illinois
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | St Louis, Missouri |
| Surname | Cowan |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 53 |
| Marital Status | Married |
| Birthplace | Illinois |
| Age at First Marriage | 22 |
| Father's Birthplace | New York |
| Mother's Birthplace | New York |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | St Louis City |
| Est. Birth Year | ~1877 |
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 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Fredrick Cowan | Son | — | 27 | ~1903 |
| Mary Cowan | Spouse | — | 53 | ~1877 |
| John Cowan | Son | — | 24 | ~1906 |
| Anna Cowan | Other | — | 22 | ~1908 |
| Fred Cowan | Head | — | 56 | ~1874 |
| Mary Cowan | Daughter | — | 25 | ~1905 |
Census Appearances
1930
St Louis, …
Spouse, age 53
St Louis, Missouri · implied b. ~1877 — 6 household members
| Surname | Cowan |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 53 |
| Marital Status | Married |
| Birthplace | Illinois |
| Age at First Marriage | 22 |
| Father's Birthplace | New York |
| Mother's Birthplace | New York |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
St.-Louis-City-County, Missouri
Spouse, age 62
St.-Louis-City-County, Missouri · implied b. ~1878 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cowan |
| Given Name | Maude |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 62 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | St. Louis (city) |
| 1935 Residence (County) | St. Louis City |
| Income (1939) | 0 |
| Highest Grade | C 2 |
| 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 Mary Cowan across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Cowan
Spouse · 1930 · age 53 · b. ~1877 · Missouri
★ You are viewing this record
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
43 people indexed on this census page (ia:1930:missouricensus00reel1233:0344)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Matilda Huber | 42 | Wife | — | Missouri |
| 52 | Bernice Huber | 12 | Daughter | — | Missouri |
| 53 | Mildred Huber | 10 | Daughter | — | Missouri |
| 54 | Ruth Huber | 7 | Daughter | — | Missouri |
| 55 | Edward Messmer | 67 | Head | Bookkeeper | Indiana |
| 56 | Minnie Messmer | 44 | Wife | — | Germany |
| 57 | Elizabeth Messmer | 16 | Daughter | — | Missouri |
| 58 | Rose M Messmer | 15 | Daughter | — | Missouri |
| 59 | Betty Jane Messmer | 2 | Daughter | — | Missouri |
| 60 | Bernard Ehmar | 75 | Head | Proprietor | Missouri |
| 61 | Julia Ehmar | 70 | Wife | — | Missouri |
| 62 | Julia F Ehmar | 45 | Daughter | — | Missouri |
| 63 | Irene A Ehmar | 41 | Daughter | — | Missouri |
| 64 | Anna Ehmar | 32 | Daughter | — | Missouri |
| 65 | Dominica Ehmar | 12 | Granddaughter | — | Missouri |
| 66 | Wilhelm Voss | 73 | Head | Carpenter | Germany |
| 67 | Henrietta Voss | 73 | Wife | — | Germany |
| 68 | Anna Voss | 45 | Daughter | — | Germany |
| 69 | Paul L Voss | 32 | Son | Superintendent | Germany |
| 70 | Marie Riley | 52 | Head | — | Missouri |
| 71 | Katherine Reach | 67 | Head | — | Missouri |
| 72 | Helen T Reach | 25 | Daughter | Stenographer | Missouri |
| 73 | Herman Luecke | 43 | Head | Proprietor | Bohemia |
| 74 | Mary Luecke | 41 | Wife | — | Missouri |
| 75 | Elsa Luecke | 21 | Daughter | Waitress | Missouri |
| 76 | Irene Luecke | 23 | Daughter | Waitress | Missouri |
| 77 | Wilma Luecke | 12 | Daughter | — | Missouri |
| 78 | Louis Guenther | 71 | Father-in-law | — | Germany |
| 79 | Anna Guenther | 62 | Mother-in-law | — | Germany |
| 80 | John Porter | 55 | Head | Laborer | Missouri |
| 81 | Pauline Porter | 52 | Wife | — | Germany |
| 82 | Marie Porter | 22 | Daughter | Specialty | Missouri |
| 83 | Fred H Cowan | 56 | Head | — | Illinois |
| 84 | Mary Cowan THIS PERSON | 53 | Wife | — | Illinois |
| 85 | Fredrick Cowan | 27 | Son | Cutter | Missouri |
| 86 | Mary Cowan | 25 | Daughter | Saleslady | Missouri |
| 87 | John Cowan | 24 | Son | Inspector | Missouri |
| 88 | Anna Cowan | 22 | Daughter-in-law | Operator | Tennessee |
| 89 | Thomas Larence | 31 | Head | Inner | Missouri |
| 90 | Cyril Larence | 25 | Wife | — | Illinois |
| 91 | Thomas Jr Larence | 4 | Son | — | Illinois |
| 92 | Wilmund Larence | 40 | Brother | Engineer | Missouri |
| 93 | Alphonsa Larence | 23 | Niece | Stenographer | 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)