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Margaret Grant — 1940 US Census Record
Linked across censuses1940 United States Federal Census · New-Castle-County, Delaware
Our Model Tree links this Margaret Grant across the 1930 and 1940 US Censuses in New-Castle-County, Delaware (XGBoost, ~Confirmed) — first a daughter (b.~1926), then head of a 11-person household.
Age 14
b. ~1926
Female
Daughter
Born: Delaware
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | New-Castle-County, Delaware |
| Surname | Grant |
| Given Name | Margaret M. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Delaware |
| 1935 Residence (City) | Wilmington City |
| 1935 Residence (County) | New Castle |
| Additional Details | |
| Industry | 0 |
| Highest Grade | S 8 |
| 1935 Residence | Same place |
| Birth State | Delaware |
| Birth Country | United States |
| Birthplace (normalized) | delaware |
| Township / Ward | Wilmington City |
| Est. Birth Year | ~1926 |
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.
11 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Margaret | Age | Birth yr |
|---|---|---|---|---|
| Marie Grant | Daughter | — | 8 | ~1932 |
| William Grant | Son | — | 15 | ~1925 |
| William Mcnally | Other | — | 69 | ~1871 |
| Teresa Grant | Daughter | — | 9 | ~1931 |
| Harry Grant | Son | — | 11 | ~1929 |
| Cathleen Grant | Daughter | — | 12 | ~1928 |
| James Grant | Son | — | 1 | ~1939 |
| Harry Grant | Head | — | 44 | ~1896 |
| Catherine Grant | Spouse | — | 41 | ~1899 |
| Mike Grant | Son | — | 3 | ~1937 |
| Margaret Grant | Daughter | — | 14 | ~1926 |
Census Appearances
1930
New Castle, …
Daughter, age 3
New Castle, Delaware · implied b. ~1927 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Grant |
| Given Name | Margaret M. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 3 |
| 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 14
New-Castle-County, Delaware · implied b. ~1926 — 11 household members
| Surname | Grant |
| Given Name | Margaret M. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Delaware |
| 1935 Residence (City) | Wilmington City |
| 1935 Residence (County) | New Castle |
| Industry | 0 |
| Highest Grade | S 8 |
| 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 Margaret Grant across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Margaret Grant
Daughter · 1940 · age 14 · b. ~1926 · Delaware
★ You are viewing this record
Sibling
Marie Grant
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Harry Grant
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Cathleen Grant
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Grant
Sibling · 1940 · age 1
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Teresa Grant
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mike Grant
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Grant
Sibling · 1940 · age 15
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-t0627-00552-00503)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Grace Krajci | 16 | Daughter | — | Delaware |
| 2 | Ann Mccloskey | 31 | Sister in law | Operator | Delaware |
| 3 | George H. O Donnell | 52 | Head | Painter | Delaware |
| 4 | Margaret M. O Donnell | 43 | Wife | — | Delaware |
| 5 | Anna Colliris | 38 | Sister in law | Bindery Worker | Delaware |
| 6 | Dawn M. Colliris | 7 | Grand Daug | — | Delaware |
| 7 | William E. Dorsey | 52 | Head | Plummer | Delaware |
| 8 | Jeanne E. Dorsey | 50 | Wife | — | Delaware |
| 9 | Miriam T. Dorsey | 21 | Daughter | Stenographer | Delaware |
| 10 | Jeanne C. Dorsey | 18 | Daughter | Operator | Delaware |
| 11 | Alma C. Dorsey | 16 | Daughter | — | Delaware |
| 12 | Harry J. Grant | 44 | Head | Sheet Metal | Delaware |
| 13 | Catherine E. Grant | 41 | Wife | — | Delaware |
| 14 | William F. Grant | 15 | Son | — | Delaware |
| 15 | Margaret M. Grant THIS PERSON | 14 | Daughter | — | Delaware |
| 16 | Cathleen Grant | 12 | Daughter | — | Delaware |
| 17 | Harry Jr. Grant | 11 | Son | — | Delaware |
| 18 | Teresa Grant | 9 | Daughter | — | Delaware |
| 19 | Marie Grant | 8 | Daughter | — | Delaware |
| 20 | Mike Grant | 3 | Son | — | Delaware |
| 21 | James Grant | 1 | Son | — | Delaware |
| 22 | William F. Mcnally | 69 | Father in law | Textile Worker | Delaware |
| 23 | Dennis R. Donavan | 52 | Head | Pipe Fitter Helper | Ireland |
| 24 | Julia M. Donavan | 50 | Wife | — | Ireland |
| 25 | Catherine A. Donavan | 13 | Daughter | — | Delaware |
| 26 | Dennis J. Jr. Donavan | 11 | Son | — | Delaware |
| 27 | Ann Donavan | 7 | Daughter | — | Delaware |
| 28 | Louis W. Denney | 48 | Head | Ice & Coal | Delaware |
| 29 | John Lucey | 72 | Head | — | Delaware |
| 30 | Margaret Lucey | 73 | Wife | — | Ireland |
| 31 | Joe Lucey | 47 | Son | Carpenter | Delaware |
| 32 | Margaret Lucey | 38 | Daughter | Bookkeeper | Delaware |
| 33 | Frank Siedowski | 51 | Head | Leather Worker | Delaware |
| 34 | Anna Siedowski | 51 | Wife | — | Poland |
| 35 | Thomas Siedowski | 28 | Son | Installing Oil Burners | Delaware |
| 36 | Francis Siedowski | 23 | Son | Leather Worker | Delaware |
| 37 | Anna Siedowski | 19 | Daughter | — | Delaware |
| 38 | Patrick J. Ryan | 64 | Head | Guard | Ireland |
| 39 | Anna F. Ryan | 61 | Wife | — | St. Louis |
| 40 | Ann K. Ryan | 32 | Daughter | Stenographer | 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)