MC
Martha Cooper — 1930 US Census Record
Linked across censuses1930 United States Federal Census · New Castle, Delaware
Our Model Tree links this Martha Cooper across the 1930 and 1940 US Censuses in New Castle, Delaware (XGBoost, ~Confirmed) — first a daughter (b.~1925), then head of a 9-person household.
Age 5
b. ~1925
Female
Daughter
Born: Delaware
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | New Castle, Delaware |
| Surname | Cooper |
| Given Name | Martha |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Delaware |
| Father's Birthplace | Greece |
| Mother's Birthplace | Greece |
| Additional Details | |
| Occupation | none |
| Birth State | Delaware |
| Birth Country | United States |
| Birthplace (normalized) | delaware |
| Township / Ward | Wilmington City |
| Est. Birth Year | ~1925 |
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 1930 census.
| Name | Relation to head | Relative to Martha | Age | Birth yr |
|---|---|---|---|---|
| Mike Cooper | Son | — | 7 | ~1923 |
| Olga Cooper | Daughter | — | 4 | ~1926 |
| George Cooper | Son | — | 10 | ~1920 |
| Stella Cooper | Spouse | — | 33 | ~1897 |
| Rosa Cooper | Daughter | — | 6 | ~1924 |
| Mary Cooper | Daughter | — | 9 | ~1921 |
| James Cooper | Head | — | 45 | ~1885 |
| Helen Cooper | Daughter | — | 12 | ~1918 |
| Martha Cooper | Daughter | — | 5 | ~1925 |
Census Appearances
1930
New Castle, …
Daughter, age 5
New Castle, Delaware · implied b. ~1925 — 9 household members
| Surname | Cooper |
| Given Name | Martha |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Delaware |
| Father's Birthplace | Greece |
| Mother's Birthplace | Greece |
| Occupation | none |
| Birth State | Delaware |
| Birth Country | United States |
| Birthplace (normalized) | delaware |
1940
New-Castle-County, Delaware
Daughter, age 15
New-Castle-County, Delaware · implied b. ~1925 — 12 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cooper |
| Given Name | Martina |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Delaware |
| 1935 Residence (City) | Wilmington City |
| 1935 Residence (County) | New Castle |
| Highest Grade | H 2 |
| 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 Martha Cooper across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Martha Cooper
Daughter · 1930 · age 5 · b. ~1925 · Delaware
★ You are viewing this record
Sibling
Olga Cooper
Sibling · 1930 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Rosa Cooper
Sibling · 1930 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
George Cooper
Sibling · 1930 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Helen Cooper
Sibling · 1930 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mike Cooper
Sibling · 1930 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Cooper
Sibling · 1930 · age 9
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
1930 US Federal Census — New Castle, Delaware
Open full size
1930 US Federal Census — New Castle, Delaware
Page Contents
50 people indexed on this census page (ia:1930:15thcensus289unit:0776)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | John A. Glover | 19 | son | None | Delaware |
| 52 | Katherine B. Glover | 17 | daughter | None | Delaware |
| 53 | Alexander Leaman | 55 | head | Salesman | Delaware |
| 54 | Eva B. Leaman | 55 | wife | Tel. Operator | Delaware |
| 55 | Annie U. Leaman | 73 | mother | None | Delaware |
| 56 | Carl Mehle | 45 | head | Carpenter | Germany |
| 57 | Faith Mehle | 53 | wife | Supply House | England |
| 58 | Minna Mehle | 16 | daughter | None | England |
| 59 | Charles Mehle | 14 | son | None | England |
| 60 | William H. Irwin | 51 | head | Carpenter | Pennsylvania |
| 61 | Sarah L. Irwin | 52 | wife | None | Pennsylvania |
| 62 | James Cooper | 45 | head | Manager | Greece |
| 63 | Stella Cooper | 33 | wife | None | Greece |
| 64 | Helen Cooper | 12 | daughter | None | Delaware |
| 65 | George Cooper | 10 | son | None | Delaware |
| 66 | Mary Cooper | 9 | daughter | None | Delaware |
| 67 | Mike Cooper | 7 | son | None | Delaware |
| 68 | Rosa Cooper | 6 | daughter | None | Delaware |
| 69 | Martha Cooper THIS PERSON | 5 | daughter | None | Delaware |
| 70 | Olga Cooper | 4 | daughter | None | Delaware |
| 71 | Thomas B. Wilkinson | 61 | head | Carpenter | Delaware |
| 72 | Catherine Wilkinson | 63 | wife | None | Delaware |
| 73 | Dorothy Strong | 20 | boarder | None | Massachusetts |
| 74 | Annie Miller | 63 | H | None | Pennsylvania |
| 75 | Margaret Miller | 27 | daughter | Stenographer | Delaware |
| 76 | George Miller | 27 | son | Electrician | Delaware |
| 77 | Naomi Miller | 27 | daughter-in-law | None | Delaware |
| 78 | George Miller | 3 | grand-child | None | Delaware |
| 79 | Robert Miller | 0 | grand-child | None | Delaware |
| 80 | William Ritter | 20 | head | Car Cleaner | Delaware |
| 81 | Jeanette Ritter | 24 | wife | None | Pennsylvania |
| 82 | Louise Cranston | 64 | head | None | Ohio |
| 83 | George Albert | 68 | head | Musician | Germany |
| 84 | Louise Albert | 61 | wife | None | New York |
| 85 | Samuel Mckay | 62 | head | Foreman | Delaware |
| 86 | Jennie Mckay | 60 | wife | None | New Jersey |
| 87 | Richard L. Mckay | 47 | boarder | Salesman | Delaware |
| 88 | Isaac Montgomery | 72 | head | Copy Cutter | New Jersey |
| 89 | John Montgomery | 70 | brother | None | Delaware |
| 90 | William H. Cole | 37 | head | Drill Night | Maryland |
| 91 | Carrie A. Cole | 37 | wife | None | Maryland |
| 92 | Lillian Cole | 15 | daughter | None | Maryland |
| 93 | Emil Oatgen | 54 | head | Mechanic | Germany |
| 94 | Marie Oatgen | 49 | wife | None | Germany |
| 95 | George Oatgen | 20 | son | Errand Boy | Delaware |
| 96 | Emil Oatgen | 16 | son | None | Delaware |
| 97 | Gertrude Oatgen | 12 | daughter | None | Delaware |
| 98 | Helen E. Oatgen | 9 | daughter | None | Delaware |
| 99 | George Brooks | 56 | head | Carpenter | Delaware |
| 100 | Mary H. Brooks | 55 | wife | None | Delaware |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1930 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)