MS
Mary Schroeder — 1940 US Census Record
Linked across censuses1940 United States Federal Census · New-Castle-County, Delaware
Our Model Tree links this Mary Schroeder across the 1930 and 1940 US Censuses in New-Castle-County, Delaware (XGBoost, ~Confirmed) — first a spouse (b.~1909), then head of a 9-person household.
Age 31
b. ~1909
Female
Spouse
Born: New Jersey
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | New-Castle-County, Delaware |
| Surname | Schroeder |
| Given Name | Mary E |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| Birthplace | New Jersey |
| 1935 Residence (City) | Claymont |
| 1935 Residence (County) | New Castle |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same house |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
| Township / Ward | Claymont |
| Est. Birth Year | ~1909 |
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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Richard Schroeder | Son | — | 6 | ~1934 |
| George Schroeder | Son | — | 3 | ~1937 |
| Francis Schroeder | Son | — | 1 | ~1939 |
| Arthur Schroeder | Head | — | 36 | ~1904 |
| James Schroeder | Son | — | 5 | ~1935 |
| Mary Schroeder | Spouse | — | 31 | ~1909 |
| Muriel Schroeder | Daughter | — | 7 | ~1933 |
| Loretta Schroeder | Daughter | — | 10 | ~1930 |
| Arthur Schroeder | Son | — | 11 | ~1929 |
Census Appearances
1930
New Castle, …
Spouse, age 21
New Castle, Delaware · implied b. ~1909 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Schroeder |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Married |
| Birthplace | New Jersey |
| Age at First Marriage | 19 |
| Father's Birthplace | New Jersey |
| Mother's Birthplace | New Jersey |
| Can Read/Write | Yes |
| Home Owned/Rented | No |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
1940
New-Castle-County, Delaware
Spouse, age 31
New-Castle-County, Delaware · implied b. ~1909 — 9 household members
| Surname | Schroeder |
| Given Name | Mary E |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| Birthplace | New Jersey |
| 1935 Residence (City) | Claymont |
| 1935 Residence (County) | New Castle |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same house |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
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 Schroeder across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Schroeder
Spouse · 1940 · age 31 · b. ~1909 · Delaware
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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 — 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-t0627-00545-00083)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | William A Miller | 45 | Head | Electrician | Pennsylvania |
| 42 | Catherine Miller | 33 | Wife | — | Pennsylvania |
| 43 | William Miller | 15 | Son | — | Pennsylvania |
| 44 | Charles E Miller | 14 | Son | — | Pennsylvania |
| 45 | Catherine M Miller | 12 | Daughter | — | Pennsylvania |
| 46 | Howard R Miller | 10 | Son | — | Delaware |
| 47 | William Walker | 33 | Son-in-law | Operator'S Helper | New Jersey |
| 48 | Irene Walker | 25 | Daughter | Waitress | Pennsylvania |
| 49 | William Walker | 4 | Grandson | — | Delaware |
| 50 | Hugh Taylor | 42 | Head | Clerk | Virginia |
| 51 | Ida Taylor | 42 | Wife | — | Virginia |
| 52 | Frank Taylor | 12 | Son | — | Virginia |
| 53 | Dorothy Taylor | 2 | Daughter | — | Pennsylvania |
| 54 | Maria Kilmon | 76 | Mother-in-law | — | Virginia |
| 55 | Arthur J Schroeder | 36 | Head | Welder | Indiana |
| 56 | Mary E Schroeder THIS PERSON | 31 | Wife | — | New Jersey |
| 57 | Arthur J Schroeder | 11 | Son | — | Delaware |
| 58 | Loretta Schroeder | 10 | Daughter | — | Delaware |
| 59 | Muriel Schroeder | 7 | Daughter | — | Delaware |
| 60 | Richard Schroeder | 6 | Son | — | Delaware |
| 61 | James Schroeder | 5 | Son | — | Delaware |
| 62 | George Schroeder | 3 | Son | — | Delaware |
| 63 | Francis R Schroeder | 1 | Son | — | Delaware |
| 64 | Alexander Mcgurk | 45 | Head | Watchman | Pennsylvania |
| 65 | Rose Mcgurk | 42 | Wife | — | Pennsylvania |
| 66 | Alexander Mcgurk | 19 | Son | — | Pennsylvania |
| 67 | William J Mcgurk | 17 | Son | — | Pennsylvania |
| 68 | Mary R Mcgurk | 15 | Daughter | — | Delaware |
| 69 | James W Means | 55 | Head | Packing | Pennsylvania |
| 70 | Elizabeth Means | 64 | Wife | — | New Jersey |
| 71 | Joseph Welch | 45 | Head | Truck Driver | Pennsylvania |
| 72 | Lorain Welch | 23 | Daughter | — | New Jersey |
| 73 | Evelyn Welch | 17 | Daughter | — | New Jersey |
| 74 | Frank Welch | 15 | Son | — | New Jersey |
| 75 | Joseph Welch | 11 | Son | — | Delaware |
| 76 | Audry Welch | 7 | Daughter | — | Delaware |
| 77 | Samuel Minford | 55 | Lodger | — | Pennsylvania |
| 78 | John W Underhay | 56 | Head | Stencil | New Jersey |
| 79 | Helen E Underhay | 48 | Wife | — | New Jersey |
| 80 | John W Jr Underhay | 15 | Son | — | 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)