MS
Mary Saunders — 1940 US Census Record
Linked across censuses1940 United States Federal Census · New-Castle-County, Delaware
Our Model Tree links this Mary Saunders across the 1930 and 1940 US Censuses in New-Castle-County, Delaware (XGBoost, ~Confirmed) — first a daughter (b.~1921), then head of a 12-person household.
Age 19
b. ~1921
Female
Daughter
Born: Delaware
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | New-Castle-County, Delaware |
| Surname | Saunders |
| Given Name | Mary E |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Delaware |
| 1935 Residence (City) | Christiana Hundred Rep. Dist. 7 |
| 1935 Residence (County) | New Castle |
| Additional Details | |
| Industry | H |
| Class of Worker | 0 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Delaware |
| Birth Country | United States |
| Birthplace (normalized) | delaware |
| Township / Ward | Christiana Hundred Rep Dist 7 |
| Est. Birth Year | ~1921 |
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.
12 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Annie Saunders | Daughter | — | 18 | ~1922 |
| Conrad Saunders | Son | — | 3 | ~1937 |
| Emily Saunders | Daughter | — | 2 | ~1938 |
| Mary Saunders | Daughter | — | 19 | ~1921 |
| Robert Saunders | Son | — | 5 | ~1935 |
| Elizabeth Saunders | Daughter | — | 1 | ~1939 |
| Mary Saunders | Daughter | — | 12 | ~1928 |
| Margaret Saunders | Daughter | — | 14 | ~1926 |
| Austin Saunders | Son | — | 16 | ~1924 |
| Aleta Saunders | Daughter | — | 17 | ~1923 |
| Charles Saunders | Head | — | 21 | ~1919 |
| Lorraine Saunders | Daughter | — | 6 | ~1934 |
Census Appearances
1930
New Castle, …
Daughter, age 8
New Castle, Delaware · implied b. ~1922 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Sanders |
| Given Name | Mary E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 8 |
| Marital Status | Single |
| Birthplace | Delaware |
| Father's Birthplace | Delaware |
| Mother's Birthplace | Delaware |
| Birth State | Delaware |
| Birth Country | United States |
| Birthplace (normalized) | delaware |
1940
New-Castle-County, Delaware
Daughter, age 19
New-Castle-County, Delaware · implied b. ~1921 — 12 household members
| Surname | Saunders |
| Given Name | Mary E |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Delaware |
| 1935 Residence (City) | Christiana Hundred Rep. Dist. 7 |
| 1935 Residence (County) | New Castle |
| Industry | H |
| Class of Worker | 0 |
| Highest Grade | Hs 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 Saunders across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Saunders
Daughter · 1940 · age 19 · b. ~1921 · Delaware
★ You are viewing this record
Sibling
Annie Saunders
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Aleta Saunders
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Austin Saunders
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Elizabeth Saunders
Sibling · 1940 · age 1
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Emily Saunders
Sibling · 1940 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Saunders
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Saunders
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lorraine Saunders
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Saunders
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Conrad Saunders
Sibling · 1940 · age 3
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-t0627-00545-00783)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Charles E Saunders | 21 | Head | Laborer | Delaware |
| 2 | Mary E Saunders THIS PERSON | 19 | Daughter | — | Delaware |
| 3 | Annie V Saunders | 18 | Daughter | — | Delaware |
| 4 | Aleta B Saunders | 17 | Daughter | — | Delaware |
| 5 | Austin P Saunders | 16 | Son | — | Delaware |
| 6 | Margaret J Saunders | 14 | Daughter | — | Delaware |
| 7 | Mary A Saunders | 12 | Daughter | — | Delaware |
| 8 | Lorraine E Saunders | 6 | Daughter | — | Delaware |
| 9 | Robert R Saunders | 5 | Son | — | Delaware |
| 10 | Conrad A Saunders | 3 | Son | — | Delaware |
| 11 | Emily S Saunders | 2 | Daughter | — | Delaware |
| 12 | Elizabeth V Saunders | 1 | Daughter | — | Delaware |
| 13 | Henry Carter | 42 | Head | Laborer | South Carolina |
| 14 | Julia M Carter | 27 | Wife | Housework | Georgia |
| 15 | Vivian Carter | 6 | Daughter | — | Delaware |
| 16 | Samuel M Carter | 2 | Son | — | Delaware |
| 17 | Noble W Blake | 40 | Head | Laborer | Delaware |
| 18 | Peggy Blake | 14 | Daughter | — | Delaware |
| 19 | Emily Blake | 10 | Daughter | — | Delaware |
| 20 | James Biddle | 58 | Head | Foreman Leatherworker | Delaware |
| 21 | Wesley S Dildy | 67 | Head | Laborer | North Carolina |
| 22 | Clarence Dixon | 34 | Partner | Laborer | New Jersey |
| 23 | George T Bordley | 51 | Head | Minister | Maryland |
| 24 | Frances M Bordley | 50 | Wife | Housework | Delaware |
| 25 | William Hamilton | 23 | Head | Truck Washer | South Carolina |
| 26 | Blanche E Hamilton | 21 | Wife | Private Home | Virginia |
| 27 | Lloyd Hamilton | 57 | Father | Elevator Operator | South Carolina |
| 28 | Henry L Cooper | 46 | Head | Laborer | Delaware |
| 29 | Edna L Cooper | 44 | Wife | Housework | Delaware |
| 30 | Mildred M Stevens | 25 | Step daughter | Housework | Delaware |
| 31 | John W Stevens | 22 | Step son | Laborer | Delaware |
| 32 | Pearl M Stevens | 19 | Step daughter | — | Delaware |
| 33 | Betty Marlon | 4 | Lodger | — | Delaware |
| 34 | Homer Sterns | 46 | Head | Laborer | North Carolina |
| 35 | Lucinda Sterns | 46 | Wife | — | Alabama |
| 36 | Cary Williams | 58 | Lodger | Laborer | South Carolina |
| 37 | Earl Hewitt | 50 | Head | — | Maryland |
| 38 | Lucy E Ford | 80 | Mother | — | Maryland |
| 39 | John F Richards | 86 | Head | — | Delaware |
| 40 | Annie Richards | 80 | Wife | — | Delaware |
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)