MW
Mary Welsh — 1930 US Census Record
Linked across censuses1930 United States Federal Census · St Louis, Missouri
Our Model Tree links this Mary Welsh across the 1930 and 1940 US Censuses in St Louis, Missouri (XGBoost, ~Confirmed) — first a daughter (b.~1926), then head of a 4-person household.
Age 4
b. ~1926
Female
Daughter
Born: Missouri
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | St Louis, Missouri |
| Surname | Welsh |
| Given Name | Mary Helen |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Missouri |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Missouri |
| Additional Details | |
| Can Read/Write | No |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
| Township / Ward | St Louis City |
| Est. Birth Year | ~1926 |
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.
4 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Welsh | Daughter | — | 6 | ~1924 |
| Esther Welsh | Spouse | — | 35 | ~1895 |
| Mary Welsh | Daughter | — | 4 | ~1926 |
| Edward Welsh | Head | — | 35 | ~1895 |
Census Appearances
1930
St Louis, …
Daughter, age 4
St Louis, Missouri · implied b. ~1926 — 4 household members
| Surname | Welsh |
| Given Name | Mary Helen |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Missouri |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Missouri |
| Can Read/Write | No |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
Daughter, age 15
St.-Louis-County, Missouri · implied b. ~1925 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Wells |
| Given Name | Mary Alice |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Missouri |
| 1935 Residence (City) | Wellston |
| 1935 Residence (County) | St. Louis |
| Highest Grade | Hs 2 |
| 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 Welsh across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Welsh
Daughter · 1930 · age 4 · b. ~1926 · Missouri
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Sibling
Mary Welsh
Sibling · 1930 · 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
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:missouricensus00reel1245:0527)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Gerald Harris | 30 | Head | Salesman | Illinois |
| 2 | Lois Harris | 28 | Wife | — | Texas |
| 3 | Gerald Jr. Harris | 5 | Son | — | Missouri |
| 4 | George D. Thickerson | 62 | Head | Laborer | Georgia |
| 5 | Mollie Thickerson | 59 | Wife | — | Georgia |
| 6 | William Schuering | 74 | Head | — | Missouri |
| 7 | Pearl Schuering | 47 | Daughter | — | Indiana |
| 8 | Frank Gifford | 33 | Head | Clerk | Illinois |
| 9 | Alice Gifford | 27 | Wife | Millinery | Missouri |
| 10 | Jeremiah Doherty | 35 | Head | Clerk | Ireland |
| 11 | Catherine Doherty | 27 | Wife | None | Missouri |
| 12 | John F. Doherty | 1 | Son | None | Missouri |
| 13 | Edward R. Welsh | 35 | Head | Fireman | Illinois |
| 14 | Esther Welsh | 35 | Wife | — | Missouri |
| 15 | Mary R. Welsh | 6 | Daughter | — | Missouri |
| 16 | Mary Helen Welsh THIS PERSON | 4 | Daughter | — | Missouri |
| 17 | John Hartwick | 40 | Head | Wood Worker | Missouri |
| 18 | Rose Hartwick | 38 | Wife | — | Missouri |
| 19 | Louis Helfrich | 37 | Head | Clerk | Missouri |
| 20 | Elsa Helfrich | 32 | Wife | — | Missouri |
| 21 | Arline Helfrich | 7 | Daughter | — | Missouri |
| 22 | Hattie Roth | 58 | Mother-in-law | Nurse | Iowa |
| 23 | Randolf Martin | 50 | Head | Clerk | Illinois |
| 24 | Emelia Martin | 43 | Wife | — | Illinois |
| 25 | Mary Martin | 13 | Daughter | None | Illinois |
| 26 | Charles W. Mayer | 47 | Head | Salesman | Missouri |
| 27 | Luella K. Mayer | 47 | Wife | — | Missouri |
| 28 | Genevieve Cross | 38 | Sister-in-law | Cashier | Missouri |
| 29 | Herbert A. Cross | 13 | Nephew | — | Missouri |
| 30 | Thomas F. Cross | 11 | Nephew | — | Missouri |
| 31 | John Mulberry | 59 | Head | Switchman | Iowa |
| 32 | Lena Mulberry | 55 | Wife | — | Iowa |
| 33 | John Mulberry | 26 | Son | Salesman | Iowa |
| 34 | George F. Mulberry | 25 | Son | Machinist | Iowa |
| 35 | John F. Mulberry | 23 | Son | Clerk | Oklahoma |
| 36 | Thomas F. Mulberry | 22 | Son | Pattern Maker | Oklahoma |
| 37 | Fred Mulberry | 20 | Son | Clerk | Texas |
| 38 | Rudolph Grobman | 52 | Head | Tool Maker | Germany |
| 39 | Margaretta Grobman | 50 | Wife | — | Germany |
| 40 | Elmer Grobman | 26 | Son | Draughtsman | Missouri |
| 41 | Edith Grobman | 18 | Daughter | Steno | Missouri |
| 42 | Matthew F. Bonn | 53 | Head | Accountant | Missouri |
| 43 | Amy E. Bonn | 53 | Wife | None | Illinois |
| 44 | Matthew Jr. Bonn | 28 | Son | Bookkeeper | Missouri |
| 45 | Ruth Bonn | 25 | Daughter | Steno | Missouri |
| 46 | Harry J. Yackerman | 38 | Head | Engineer | Missouri |
| 47 | Bess Yackerman | 38 | Wife | — | Missouri |
| 48 | Virginia Yackerman | 13 | Daughter | — | Missouri |
| 49 | Mildred Yackerman | 3 | Daughter | — | Missouri |
| 50 | Hubert Volewiler | 43 | Head | Labor | Missouri |
Related Census Records
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)