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Mary Baldwin — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Baltimore-County, Maryland
Our Model Tree links this Mary Baldwin across the 1920, 1930 and 1940 US Censuses in Baltimore-County, Maryland (XGBoost, ~Confirmed) — first a spouse (b.~1895), then head of a 8-person household.
Age 45
b. ~1895
Female
Spouse
Born: Maryland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Baltimore-County, Maryland |
| Surname | Baldwin |
| Given Name | Mary V. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 45 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | District 11 |
| 1935 Residence (County) | Baltimore |
| Additional Details | |
| Class of Worker | 0 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same house |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Township / Ward | District 11 |
| Est. Birth Year | ~1895 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Baldwin | Daughter | — | 15 | ~1925 |
| William Baldwin | Head | — | 45 | ~1895 |
| Viola Wells | Other | — | 32 | ~1908 |
| William Baldwin | Son | — | 13 | ~1927 |
| John Baldwin | Son | — | 21 | ~1919 |
| Maurice Baldwin | Son | — | 17 | ~1923 |
| Harry Baldwin | Son | — | 19 | ~1921 |
| Mary Baldwin | Spouse | — | 45 | ~1895 |
Census Appearances
1920
Baltimore, Maryland
Spouse, age 25
Baltimore, Maryland · implied b. ~1895 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Baldwin |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 25 |
| Marital Status | Married |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1930
Baltimore, Maryland
Spouse, age 35
Baltimore, Maryland · implied b. ~1895 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Baldwin |
| Given Name | Mary E. |
| Relationship to Head | wife |
| Sex | F |
| Color / Race | White |
| Age | 35 |
| Marital Status | Married |
| Birthplace | Maryland |
| Age at First Marriage | 22 |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Baltimore-County, Maryland
Spouse, age 45
Baltimore-County, Maryland · implied b. ~1895 — 8 household members
| Surname | Baldwin |
| Given Name | Mary V. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 45 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | District 11 |
| 1935 Residence (County) | Baltimore |
| Class of Worker | 0 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same house |
| 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 Baldwin 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 Baldwin
Spouse · 1940 · age 45 · b. ~1895 · 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 — Baltimore-County, Maryland
Open full size
1940 US Federal Census — Baltimore-County, Maryland
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01505-00678)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | John C. Elder | 5 | Son | — | Maryland |
| 2 | Lewis Jessie S. Elder | 76 | Aunt | — | Maryland |
| 3 | Harry L. Stanfield | 23 | Head | Laborer | Maryland |
| 4 | Arkie N. Stanfield | 25 | Wife | — | North Carolina |
| 5 | Dean Richardson | 21 | Brother-in-law | Trackhand | North Carolina |
| 6 | George V. Calder | 46 | Head | Farmer | Maryland |
| 7 | Annie M. Calder | 45 | Wife | — | Pennsylvania |
| 8 | Anna M. Calder | 21 | Daughter | — | Pennsylvania |
| 9 | Lois V. Calder | 20 | Daughter | — | Pennsylvania |
| 10 | Susan V. Calder | 17 | Daughter | — | Pennsylvania |
| 11 | Robert M. Calder | 14 | Son | — | Maryland |
| 12 | Mary N. Calder | 12 | Daughter | — | Maryland |
| 13 | Thomas M. Calder | 6 | Son | — | Maryland |
| 14 | William S. Baldwin | 45 | Head | Farmer | Maryland |
| 15 | Mary V. Baldwin THIS PERSON | 45 | Wife | — | Maryland |
| 16 | John F. Baldwin | 21 | Son | Clerk | Maryland |
| 17 | Harry W. Baldwin | 19 | Son | — | Maryland |
| 18 | Maurice W. Baldwin | 17 | Son | Clerk | Maryland |
| 19 | Mary L. Baldwin | 15 | Daughter | — | Maryland |
| 20 | William S. Baldwin | 13 | Son | — | Maryland |
| 21 | Viola Wells | 32 | Lodger | Cook | Maryland |
| 22 | John F. Kolk | 53 | Head | Farmer | Maryland |
| 23 | Annie E. Kolk | 55 | Sister | — | Maryland |
| 24 | Vernon F. Kolk | 25 | Son | Laborer | Maryland |
| 25 | Marjorie Kolk | 21 | Daughter | Helper | Maryland |
| 26 | Earnest J. Kolk | 15 | Son | — | Maryland |
| 27 | Lutther Jourdan | 32 | Head | Laborer | Maryland |
| 28 | Anetta M. Jourdan | 33 | Wife | — | Maryland |
| 29 | Doris A. Jourdan | 10 | Daughter | — | Maryland |
| 30 | Thelma L. Jourdan | 9 | Daughter | — | Maryland |
| 31 | Mary J. Jourdan | 6 | Daughter | — | Maryland |
| 32 | Luther H. Jourdan | 3 | Son | — | Maryland |
| 33 | James A. Jourdan | 1 | Son | — | Maryland |
| 34 | James F. Brice | 61 | Head | Farmer | Maryland |
| 35 | Annie D. Brice | 61 | Wife | — | Virginia |
| 36 | Morris E. Brice | 23 | Daughter | Laborer | Maryland |
| 37 | George E. Brice | 20 | Son | Errand Boy | Maryland |
| 38 | Howard L. Mclane | 39 | Head | Sexton | Maryland |
| 39 | Margaret L. Mclane | 38 | Wife | Cook | Maryland |
| 40 | John W. Lever | 32 | Head | Chauffeur | Virginia |
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)