DM
Dorothy Martin — 1940 US Census Record
Model Tree available1940 United States Federal Census · New-Castle-County, Delaware
Our Model Tree links this Dorothy Martin across the 1920, 1930 and 1940 US Censuses in New-Castle-County, Delaware (XGBoost, ~Confirmed), with identified parents William & Charles — first a daughter (b.~1913), then head of a 4-person household.
Age 27
b. ~1913
Female
Daughter
Born: Delaware
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | New-Castle-County, Delaware |
| Surname | Martin |
| Given Name | Dorothy P. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 27 |
| Marital Status | Single |
| Birthplace | Delaware |
| 1935 Residence (City) | Wilmington |
| 1935 Residence (County) | New Castle |
| Additional Details | |
| Highest Grade | H 4 |
| 1935 Residence | Delaware |
| Birth State | Delaware |
| Birth Country | United States |
| Birthplace (normalized) | delaware |
| Township / Ward | Christiana Hundred Rep Dist 7 |
| Est. Birth Year | ~1913 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Dorothy | Age | Birth yr |
|---|---|---|---|---|
| Dorothy Martin | Daughter | — | 27 | ~1913 |
| Charles Martin | Head | — | 54 | ~1886 |
| Arnold Martin | Son | — | 24 | ~1916 |
| Della Martin | Spouse | — | 50 | ~1890 |
Census Appearances
1920
New Castle, …
Daughter, age 7
New Castle, Delaware · implied b. ~1913 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martin |
| Given Name | Dorothy |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Delaware |
| Father's Birthplace | Delaware |
| Mother's Birthplace | Delaware |
| Birth State | Delaware |
| Birth Country | United States |
| Birthplace (normalized) | delaware |
1930
New Castle, …
Daughter, age 17
New Castle, Delaware · implied b. ~1913 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martin |
| Given Name | Dorothy R |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Delaware |
| Father's Birthplace | Delaware |
| Mother's Birthplace | Delaware |
| Occupation | Saleslady |
| Industry | Dress Shop |
| 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 27
New-Castle-County, Delaware · implied b. ~1913 — 4 household members
| Surname | Martin |
| Given Name | Dorothy P. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 27 |
| Marital Status | Single |
| Birthplace | Delaware |
| 1935 Residence (City) | Wilmington |
| 1935 Residence (County) | New Castle |
| Highest Grade | H 4 |
| 1935 Residence | Delaware |
| 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 Dorothy Martin across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father William Martin (~0.92 confidence) and father Charles Martin (~0.92 confidence) and father Charles Martin (~0.92 confidence) and mother Della Martin (~0.92 confidence) and mother Nellie Martin (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
William Martin
b. ~1885
Source father
● Household
· direct · ~0.92
Father
Charles Martin
b. ~1886
Source father
● Household
· direct · ~0.92
Father
Charles Martin
b. ~1888
Source father
● Household
· direct · ~0.92
Mother
Della Martin
b. ~1890
Source mother
● Household
· direct · ~0.92
Mother
Nellie Martin
b. ~1892
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Dorothy Martin
Daughter · 1940 · age 27 · b. ~1913 · Delaware
★ You are viewing this record
Sibling
Arnold Martin
Sibling · 1940 · age 24
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 — 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-t0627-00545-00791)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Work Theodore H. 3Rd Work | 19 | Son | Helper | Michigan |
| 2 | Work John P. Work | 15 | Son | 0 | Delaware |
| 3 | Harris Annie S. Work | 73 | Mother-in-law | 0 | Maryland |
| 4 | Albert E. Symonds | 53 | Head | Bricklayer | England |
| 5 | Eleanor M. Symonds | 44 | Wife | — | New York |
| 6 | Olivia F. Symonds | 23 | Daughter | Stenographer | New York |
| 7 | Bessie G. Symonds | 21 | Daughter | Salesgirl | New York |
| 8 | Richard H. Symonds | 19 | Son | Delivery Boy | Delaware |
| 9 | Frances C. Symonds | 16 | Daughter | 0 | New York |
| 10 | Albert E. Jr. Symonds | 13 | Son | 0 | New York |
| 11 | Clifford N. Symonds | 13 | Son | 0 | New Jersey |
| 12 | Eleanor K. Symonds | 10 | Daughter | 0 | New Jersey |
| 13 | Patricia A. Symonds | 7 | Daughter | 0 | Delaware |
| 14 | Mary O. Symonds | 89 | Mother | — | England |
| 15 | Howard F. Carnegy | 38 | Head | Salesman | Delaware |
| 16 | Emma H. Carnegy | 42 | Wife | Stenographer | Hungary |
| 17 | Agnes E. Carnegy | 17 | Daughter | 0 | Delaware |
| 18 | Charlotte Toland | 34 | Head | Agent | Delaware |
| 19 | Ruth H. Toland | 39 | Wife | — | Delaware |
| 20 | David H. Toland | 2 | Son | 0 | Delaware |
| 21 | Mary Malinowski | 38 | Head | Sprayer | Poland |
| 22 | Jessie Malinowski | 20 | Son | Turkey Collector | Delaware |
| 23 | William J. Wenglerski | 45 | Cousin | Steward | Poland |
| 24 | Michael Swidorski | 49 | Head | Carpenter | Poland |
| 25 | Victoria F. Swidorski | 47 | Wife | — | Delaware |
| 26 | Edward N. Swidorski | 19 | Son | Plumbers Helper | Delaware |
| 27 | Cecilia M. Swidorski | 17 | Daughter | 0 | Delaware |
| 28 | John J. Feret | 31 | Head | First Helper | Delaware |
| 29 | Ethel R. Feret | 28 | Wife | — | Pennsylvania |
| 30 | John Feret | 8 | Son | 0 | Delaware |
| 31 | William Feret | 2 | Son | 0 | Delaware |
| 32 | Joseph E. Maykut | 25 | Head | Wrecker | Delaware |
| 33 | Elizabeth Maykut | 22 | Wife | — | Delaware |
| 34 | Ronald J. Maykut | 2 | Son | 0 | Delaware |
| 35 | Russell Peters | 64 | Head | Laborer | Delaware |
| 36 | Margaret P. Peters | 58 | Wife | — | Delaware |
| 37 | Charles W. Martin | 54 | Head | Maintenance Engineer | Delaware |
| 38 | Della L. Martin | 50 | Wife | — | Delaware |
| 39 | Dorothy P. Martin THIS PERSON | 27 | Daughter | — | Delaware |
| 40 | Arnold W. Martin | 24 | Son | Taggler | Delaware |
Pedigree Summary
Dorothy + 1 sibling
Gen 1 · 5 parents
~0.92
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)