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Mary Welsh — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Baltimore, Maryland
Our Model Tree links this Mary Welsh across the 1930 and 1940 US Censuses in Baltimore, Maryland (XGBoost, ~Confirmed) — first a spouse (b.~1885), then head of a 3-person household.
Age 45
b. ~1885
Female
Spouse
Born: Maryland
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Baltimore, Maryland |
| Surname | Welsh |
| Given Name | Mary A. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 45 |
| Marital Status | Married |
| Birthplace | Maryland |
| Age at First Marriage | 21 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Township / Ward | Baltimore |
| Est. Birth Year | ~1885 |
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.
3 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| John Welsh | Head | — | 64 | ~1866 |
| Mary Welsh | Spouse | — | 45 | ~1885 |
| John Welsh | Son | — | 22 | ~1908 |
Census Appearances
1930
Baltimore, Maryland
Spouse, age 45
Baltimore, Maryland · implied b. ~1885 — 3 household members
| Surname | Welsh |
| Given Name | Mary A. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 45 |
| Marital Status | Married |
| Birthplace | Maryland |
| Age at First Marriage | 21 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read/Write | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Baltimore-City-County, Maryland
Head, age 56
Baltimore-City-County, Maryland · implied b. ~1884
●
Primary link
· ~Confirmed · 1 source
XGBoost
| Surname | Wells |
| Given Name | Mary E. |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 56 |
| Marital Status | Widowed |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore |
| 1935 Residence (County) | Baltimore City |
| Occupation | Teacher |
| Industry | Public School |
| Class of Worker | GW |
| Hours Worked | 30 |
| Income (1939) | 3000 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
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
Spouse · 1930 · age 45 · b. ~1885 · Maryland
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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 — Baltimore, Maryland
Open full size
1930 US Federal Census — Baltimore, Maryland
Page Contents
50 people indexed on this census page (ia:1930:15thcensus860unit:0628)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Son Daniel | 25 | Son | — | Maryland |
| 52 | Son James | 17 | Son | — | Maryland |
| 53 | Son Andrew | 14 | Son | — | Maryland |
| 54 | Son Edward | 8 | Son | — | Maryland |
| 55 | Mary Shanahan | 60 | Mother-in-law | — | Ireland |
| 56 | Daniel Shanahan | 34 | Brother-in-law | Chauffeur | Maryland |
| 57 | James Shanahan | 23 | Brother-in-law | Chauffeur | Maryland |
| 58 | — | None | — | — | — |
| 59 | Charles H. Williams | 69 | Head | Laborer | Virginia |
| 60 | Helen B. Williams | 70 | Sister | — | Virginia |
| 61 | John H. Welsh | 64 | Head | Painter | Ireland |
| 62 | Mary A. Welsh THIS PERSON | 45 | Wife | — | Maryland |
| 63 | John W. Welsh | 22 | Son | Clerk | Maryland |
| 64 | William U. Klunk | 36 | Head | Plumber | Maryland |
| 65 | Margaret E. Klunk | 30 | Wife | — | Maryland |
| 66 | Maurice J. Klunk | 13 | Son | — | Maryland |
| 67 | Nellie Klunk | 11 | Daughter | — | Maryland |
| 68 | Helen Klunk | 9 | Daughter | — | Maryland |
| 69 | Annie G. Kopp | 63 | Head | — | Maryland |
| 70 | Elinore G. Kopp | 85 | Mother | — | Maryland |
| 71 | Edward W. Gillaspy | 74 | Boarder | — | Maryland |
| 72 | Tilghman M. Price | 44 | Head | Contractor | Maryland |
| 73 | India M. Price | 43 | Wife | — | Maryland |
| 74 | Beverly J. Price | 18 | Son | — | Maryland |
| 75 | Vera J. Price | 15 | Daughter | — | Maryland |
| 76 | Ethelyn J. Price | 9 | Daughter | — | Maryland |
| 77 | — | None | — | — | — |
| 78 | Robert Garland | 43 | Head | Loading Clerk | England |
| 79 | Martha L. Garland | 41 | Wife | — | Maryland |
| 80 | Charles W. Machen | 45 | Head | Machinist | Maryland |
| 81 | Elizabeth Machen | 42 | Wife | — | Maryland |
| 82 | Leo C. Machen | 23 | Son | Radio Operator | Maryland |
| 83 | Charles J. Machen | 19 | Son | — | Maryland |
| 84 | Anna Waller | 50 | Boarder | — | Pennsylvania |
| 85 | John L. White | 39 | Head | Auto Trimmer | Pennsylvania |
| 86 | Ella G. White | 38 | Wife | — | Maryland |
| 87 | John L. White | 4 | Son | — | Maryland |
| 88 | Helen A. Lee | 24 | Sister-in-law | — | Maryland |
| 89 | Ann H. Lee | 1 | Niece | — | Maryland |
| 90 | Martha E. Hopkins | 60 | Head | Sterilizer | Maryland |
| 91 | Carl C. Rivas | 34 | Head | Pharmacist | Cuba |
| 92 | Virginia G. Rivas | 34 | Wife | — | Maryland |
| 93 | Ailiuma Rivas | 11 | Daughter | — | Maryland |
| 94 | Carl C. Rivas | 8 | Son | — | Maryland |
| 95 | Louis P. Rivas | 6 | Son | — | Maryland |
| 96 | Linwood E. Wolfe | 23 | Head | Helper | Maryland |
| 97 | Genevie C. Wolfe | 21 | Wife | — | Maryland |
| 98 | Linwood E. Wolfe | 4 | Son | — | Maryland |
| 99 | Donald E. Wolfe | 1 | Son | — | Maryland |
| 100 | Martha E. Mullineaux | 60 | Head | — | Maryland |
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)