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Mary Barnes — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Carroll-County, Maryland
Our Model Tree links this Mary Barnes across the 1920, 1930 and 1940 US Censuses in Carroll-County, Maryland (XGBoost, ~Confirmed) — first a spouse (b.~1898), then head of a 3-person household.
Age 42
b. ~1898
Female
Spouse
Born: Maryland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Carroll-County, Maryland |
| Surname | Barnes |
| Given Name | Mary M. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 42 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | Westminster City |
| 1935 Residence (County) | Carroll |
| Additional Details | |
| Occupation | Seamstress |
| Industry | At Shop |
| Class of Worker | OA |
| Hours Worked | 60 |
| Income (1939) | 900 |
| Highest Grade | No 8 |
| 1935 Residence | Same Place |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Occupation | Seamstress |
| Township / Ward | Westminster City |
| Est. Birth Year | ~1898 |
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 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Ralph Barnes | Head | — | 42 | ~1898 |
| Ralph Barnes | Son | — | 19 | ~1921 |
| Mary Barnes | Spouse | — | 42 | ~1898 |
Census Appearances
1920
Carroll, Maryland
Spouse, age 22
Carroll, Maryland · implied b. ~1898 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Barnes |
| Given Name | Mary M |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 22 |
| Marital Status | Married |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1930
Carroll, Maryland
Spouse, age 32
Carroll, Maryland · implied b. ~1898 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Barnes |
| Given Name | Mary M |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | Maryland |
| Age at First Marriage | 19 |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Can Read/Write | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Carroll-County, Maryland
Spouse, age 42
Carroll-County, Maryland · implied b. ~1898 — 3 household members
| Surname | Barnes |
| Given Name | Mary M. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 42 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | Westminster City |
| 1935 Residence (County) | Carroll |
| Occupation | Seamstress |
| Industry | At Shop |
| Class of Worker | OA |
| Hours Worked | 60 |
| Income (1939) | 900 |
| Highest Grade | No 8 |
| 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 Barnes 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 Barnes
Spouse · 1940 · age 42 · b. ~1898 · Maryland
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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-t0627-01544-00596)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | William E. Kelley | 43 | Head | Clergyman | Maryland |
| 2 | Louise Fitzsimmons | 68 | Housekeeper | Housekeeper | Illinois |
| 3 | Joseph G. Mccourt | 40 | Assistant Priest | Clergyman | Maryland |
| 4 | Charles Kroop | 44 | Head | Shoemaker | Russia |
| 5 | Sarah Kroop | 42 | Wife | — | Russia |
| 6 | Gertrude Kroop | 22 | Daughter | Saleswoman | Maryland |
| 7 | Ruth Kroop | 20 | Daughter | Saleswoman | Maryland |
| 8 | Mary Kroop | 13 | Daughter | — | Maryland |
| 9 | Herbert L. Montague | 77 | Head | Retired | Massachusetts |
| 10 | Elizabeth B. Montague | 62 | Wife | — | Pennsylvania |
| 11 | Henry K. Green | 34 | Head | Painter | Maryland |
| 12 | Thomas F. Green | 44 | Brother | Mechanic | Maryland |
| 13 | Harry E. Biehl | 53 | Lodger | Painter | Maryland |
| 14 | Ralph G. Barnes | 42 | Head | Presser | Maryland |
| 15 | Mary M. Barnes THIS PERSON | 42 | Wife | Seamstress | Maryland |
| 16 | Ralph G. Barnes | 19 | Son | — | Maryland |
| 17 | Charles C. Lemmon | 24 | Head | Operator | Maryland |
| 18 | Viola C. Lemmon | 23 | Wife | Perforator | Maryland |
| 19 | Francis Frush | 25 | Lodger | Barber | Maryland |
| 20 | Henry N. Harbaugh | 29 | Head | Car Dealer | Maryland |
| 21 | Irene L. Harbaugh | 26 | Wife | — | Maryland |
| 22 | Henry N. Harbaugh | 5 | Son | — | Maryland |
| 23 | Harry E. Harbaugh | 1 | Son | — | Maryland |
| 24 | Sally A. Harbaugh | 71 | Mother | — | Maryland |
| 25 | Allen W. Rickell | 44 | Head | Upholsterer And Refinishing Furn. | Ohio |
| 26 | Irene E. Rickell | 33 | Wife | Seamstress | Wisconsin |
| 27 | Norma I. Rickell | 8 | Daughter | — | Maryland |
| 28 | Frank Harman | 39 | Head | Drayman | Maryland |
| 29 | S. Frank Jr. Harman | 14 | Son | — | Maryland |
| 30 | Margaret B. Harman | 11 | Daughter | — | Maryland |
| 31 | Elizabeth J. Harman | 8 | Daughter | — | Maryland |
| 32 | Mary Louise Harman | 1 | Daughter | — | Maryland |
| 33 | Carrie M. Harman | 65 | Mother | — | Maryland |
| 34 | Charles H. Harman | 68 | Father | Dealer | Maryland |
| 35 | Mary Agnes Harman | 55 | Sister | Marker | Maryland |
| 36 | John H. Harman | 25 | Brother | Truck Driver | Maryland |
| 37 | Frank J. Myers | 67 | Head | Retired | Maryland |
| 38 | Myrtle Myers | 58 | Wife | — | Maryland |
| 39 | Ralph W. Baumgardner | 32 | Head | Industrial Teacher | Maryland |
| 40 | Hella E. Baumgardner | 27 | Wife | — | Maryland |
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)