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Mary Welsh — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Carroll-County, Maryland
Our Model Tree links this Mary Welsh across the 1930 and 1940 US Censuses in Carroll-County, Maryland (XGBoost, ~Confirmed) — first a daughter (b.~1924), then head of a 7-person household.
Age 16
b. ~1924
Female
Daughter
Born: Maryland
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Carroll-County, Maryland |
| Surname | Welsh |
| Given Name | Mary P |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Berrett |
| 1935 Residence (County) | Carroll |
| Additional Details | |
| Industry | 0 |
| Highest Grade | Hs 3 |
| 1935 Residence | Same place |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Township / Ward | Berrett |
| Est. Birth Year | ~1924 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Welsh | Daughter | — | 16 | ~1924 |
| James Welsh | Son | — | 8 | ~1932 |
| Lewis Welsh | Head | — | 47 | ~1893 |
| Mary Welsh | Spouse | — | 47 | ~1893 |
| William Welsh | Son | — | 15 | ~1925 |
| Francis Welsh | Son | — | 12 | ~1928 |
| Bessie Welsh | Daughter | — | 6 | ~1934 |
Census Appearances
1930
Carroll, Maryland
Daughter, age 6
Carroll, Maryland · implied b. ~1924 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Welsh |
| Given Name | Mary P. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 6 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Carroll-County, Maryland
Daughter, age 16
Carroll-County, Maryland · implied b. ~1924 — 7 household members
| Surname | Welsh |
| Given Name | Mary P |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Berrett |
| 1935 Residence (County) | Carroll |
| Industry | 0 |
| Highest Grade | Hs 3 |
| 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
Daughter · 1940 · age 16 · b. ~1924 · Maryland
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Sibling
James Welsh
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Bessie Welsh
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Welsh
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Francis Welsh
Sibling · 1940 · age 12
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 — Carroll-County, Maryland
Open full size
1940 US Federal Census — Carroll-County, Maryland
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01544-01063)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Ronald Moore | 2 | son | — | Maryland |
| 2 | Floyd Lewis | 37 | head | Hatcher And Farming | Maryland |
| 3 | Daisy Lewis | 32 | wife | Hatcher And Farming | Illinois |
| 4 | Floyd Jr. Lewis | 12 | son | — | Maryland |
| 5 | Hazel Lewis | 10 | daughter | — | Maryland |
| 6 | Jeanette Lewis | 7 | son | — | Maryland |
| 7 | Charles Lewis | 6 | son | — | Maryland |
| 8 | Richard D Gist | 64 | head | Farmer | Maryland |
| 9 | Daisy Gist | 56 | wife | — | Maryland |
| 10 | Lewis A Welsh | 47 | head | Farmer | Maryland |
| 11 | Mary B Welsh | 47 | wife | — | Maryland |
| 12 | Mary P Welsh THIS PERSON | 16 | daughter | — | Maryland |
| 13 | William A Welsh | 15 | son | — | Maryland |
| 14 | Francis M Welsh | 12 | son | — | Maryland |
| 15 | James G. Welsh | 8 | son | — | Maryland |
| 16 | Bessie L. Welsh | 6 | daughter | — | Maryland |
| 17 | Elsie Welsh | 38 | head | — | Maryland |
| 18 | Margaret D Welsh | 61 | head | — | Maryland |
| 19 | William Welsh | 13 | grandson | — | Maryland |
| 20 | Margaret Wolbert | 32 | head | Farmer | Maryland |
| 21 | Edith Wolbert | 31 | wife | — | Maryland |
| 22 | John A. Wolbert | 10 | son | — | Maryland |
| 23 | Mary V. Wolbert | 5 | daughter | — | Maryland |
| 24 | John Wolbert | 82 | father | Farmer | Maryland |
| 25 | Mary Wolbert | 74 | mother | — | Maryland |
| 26 | Elizabeth Wolbert | 50 | sister | Seamstress | Maryland |
| 27 | George Zimmerman | 27 | head | Farmer | Maryland |
| 28 | Nora Zimmerman | 20 | wife | — | Maryland |
| 29 | George Zimmerman | 4 | son | — | Maryland |
| 30 | E. G. Trench | 62 | lodger | Farm Laborer | West Virginia |
| 31 | Eda Trench | 51 | maid | House Keeper | Virginia |
| 32 | Clarence E Leanaway | 53 | head | Farmer | Maryland |
| 33 | Dessie Leanaway | 49 | wife | — | Maryland |
| 34 | Charles Leanaway | 21 | son | Farmer Laborer | Maryland |
| 35 | Mary Leanaway | 20 | daughter | — | Maryland |
| 36 | Donald Leanaway | 18 | son | Farming | Maryland |
| 37 | Anthena Leanaway | 15 | daughter | — | Maryland |
| 38 | Madeline Leanaway | 12 | daughter | — | Maryland |
| 39 | Roland Leanaway | 7 | son | — | Maryland |
| 40 | Ray Leanaway | 48 | head | Farmer | Maryland |
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)