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Mary Baldwin — 1940 US Census Record
Model Tree available1940 United States Federal Census · New-Castle-County, Delaware
Our Model Tree links this Mary Baldwin across the 1920, 1930 and 1940 US Censuses in New-Castle-County, Delaware (XGBoost, ~Confirmed), with identified parents Jacob & Eleanor — first a daughter (b.~1887), then head of a 2-person household.
Age 53
b. ~1887
Female
Daughter
Born: Delaware
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | New-Castle-County, Delaware |
| Surname | Baldwin |
| Given Name | Mary E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 53 |
| Marital Status | Single |
| Birthplace | Delaware |
| 1935 Residence (City) | Wilmington |
| 1935 Residence (County) | New Castle |
| Additional Details | |
| Occupation | Secretary |
| Industry | Office |
| Class of Worker | PW |
| Hours Worked | 36 |
| Income (1939) | 991 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | Delaware |
| Birth Country | United States |
| Birthplace (normalized) | delaware |
| Occupation | Secretary |
| Township / Ward | Wilmington |
| Est. Birth Year | ~1887 |
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.
2 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Baldwin | Daughter | — | 53 | ~1887 |
| Elwood Baldwin | Head | — | 52 | ~1888 |
Census Appearances
1920
New Castle, …
Daughter, age 33
New Castle, Delaware · implied b. ~1887 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Baldwin |
| Given Name | Mary L |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 33 |
| Marital Status | Single |
| Birthplace | Delaware |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Delaware |
| Birth Country | United States |
| Birthplace (normalized) | delaware |
1930
New Castle, …
Daughter, age 43
New Castle, Delaware · implied b. ~1887 — 16 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Baldwin |
| Given Name | Mary E |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 43 |
| Marital Status | Single |
| Birthplace | Delaware |
| Father's Birthplace | Delaware |
| Mother's Birthplace | Pennsylvania |
| Occupation | Secretary |
| Industry | Physician |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Delaware |
| Birth Country | United States |
| Birthplace (normalized) | delaware |
1940
New-Castle-County, Delaware
Daughter, age 53
New-Castle-County, Delaware · implied b. ~1887 — 2 household members
| Surname | Baldwin |
| Given Name | Mary E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 53 |
| Marital Status | Single |
| Birthplace | Delaware |
| 1935 Residence (City) | Wilmington |
| 1935 Residence (County) | New Castle |
| Occupation | Secretary |
| Industry | Office |
| Class of Worker | PW |
| Hours Worked | 36 |
| Income (1939) | 991 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | Delaware |
| Birth Country | United States |
| Birthplace (normalized) | delaware |
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. Identified parents: father Jacob Baldwin (~0.92 confidence) and mother Eleanor Baldwin (~0.92 confidence) and mother Susan Baldwin (~0.92 confidence) and father Elwood Baldwin (~0.50 confidence) and mother Elizabeth Jones (~0.50 confidence) and mother Lucy Mccartney (~0.50 confidence). The pedigree spans 1 generation with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.71
Father
Jacob Baldwin
b. ~1854
Source father
● Household
· direct · ~0.92
Mother
Eleanor Baldwin
b. ~1857
Source mother
● Household
· direct · ~0.92
Mother
Susan Baldwin
b. ~1857
Source mother
● Household
· direct · ~0.92
Father
Elwood Baldwin
b. ~1888
Source father
● Household
· direct · ~0.5
Mother
Elizabeth Jones
b. ~1897
Source mother
● Household
· direct · ~0.5
Mother
Lucy Mccartney
b. ~1897
Source mother
● Household
· direct · ~0.5
This person
Anchor record
Mary Baldwin
Daughter · 1940 · age 53 · b. ~1887 · Delaware
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — New-Castle-County, Delaware
Open full size
1940 US Federal Census — New-Castle-County, Delaware
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00550-00395)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | William C. Jr. Hurd | 42 | Son | Machinist | Delaware |
| 42 | Elwood R. Baldwin | 52 | Head | — | Pennsylvania |
| 43 | Mary E. Baldwin THIS PERSON | 53 | Daughter | Secretary | Delaware |
| 44 | Harry L. Jr. Magee | 32 | Head | Clerk | Delaware |
| 45 | Frances H. Magee | 31 | Wife | Teacher | New Jersey |
| 46 | Mary Jane Magee | 2 | Daughter | — | — |
| 47 | Cecil H. Sheats | 56 | Head | Firm Member | Maryland |
| 48 | Eleanor H. Sheats | 54 | Wife | — | Delaware |
| 49 | Albert H. Foulk | 34 | Son-in-law | Real Estate & Ins. | Delaware |
| 50 | Alice G. Foulk | 31 | Daughter | — | Delaware |
| 51 | David H. Foulk | 2 | Grandson | — | — |
| 52 | Elsie T. Mccabell | 54 | Head | Teacher | Virginia |
| 53 | Charles Patrick Mccabell | 25 | Son | Chemical Engineer | Virginia |
| 54 | George Howard Reed | 36 | Head | Credit Manager | Delaware |
| 55 | Julia K. Reed | 37 | Wife | — | Delaware |
| 56 | George Howard Jr. Reed | 7 | Son | — | Delaware |
| 57 | Amy C. Mccarthy | 43 | Head | — | Delaware |
| 58 | Eileen Mccarthy | 20 | Daughter | Comptometer Operator | Delaware |
| 59 | Thomas Mccarthy | 16 | Son | — | Delaware |
| 60 | Elizabeth Mccarthy | 14 | Daughter | — | Delaware |
| 61 | Timothy Mccarthy | 12 | Son | — | Delaware |
| 62 | Edward Mccarthy | 8 | Son | — | Delaware |
| 63 | Mary Mccarthy | 8 | Daughter | — | Delaware |
| 64 | Ann Mccarthy | 12 | Daughter | Fireman | Delaware |
| 65 | John Peoples | 35 | Butler | — | Delaware |
| 66 | Janet Scott Macdonald | 71 | Head | — | Maryland |
| 67 | Nora E. Lynch | 76 | Servant | Maid | Delaware |
| 68 | Paul J. Nowland | 45 | Head | President | Delaware |
| 69 | Louise L. Nowland | 42 | Wife | — | Delaware |
| 70 | Barbara Louise Nowland | 11 | Daughter | — | Pennsylvania |
| 71 | Philip J. Nowland | 9 | Son | — | Pennsylvania |
| 72 | Emily Beggs | 49 | Servant | Waitress | England |
| 73 | Margaret E. Keas | 46 | Servant | Cook | New Jersey |
| 74 | E. R. Holt | 85 | Head | — | Maryland |
| 75 | Elizabeth V. Holt | 81 | Sister | — | Maryland |
| 76 | Catherine C. Lynch | 67 | Servant | Maid | Delaware |
| 77 | William Simmons | 38 | Head | Manufacturer | Pennsylvania |
| 78 | Catherine Simmons | 37 | Wife | — | Pennsylvania |
| 79 | William H. Simmons | 12 | Son | — | Pennsylvania |
| 80 | Jean E. Simmons | 10 | Daughter | — | Pennsylvania |
Pedigree Summary
Mary
Gen 1 · 6 parents
~0.71
Max depth 4 (1900–1950 window)
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)