MD
Mary Donovan — 1940 US Census Record
Linked across censuses1940 United States Federal Census · New-Castle-County, Delaware
Our Model Tree links this Mary Donovan across the 1920, 1930 and 1940 US Censuses in New-Castle-County, Delaware (XGBoost, ~Confirmed) — first a spouse (b.~1868), then head of a 4-person household.
Age 72
b. ~1868
Female
Spouse
Born: Delaware
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | New-Castle-County, Delaware |
| Surname | Donovan |
| Given Name | Mary B. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 72 |
| Marital Status | Married |
| Birthplace | Delaware |
| 1935 Residence (City) | Wilmington City |
| 1935 Residence (County) | New Castle |
| Additional Details | |
| Highest Grade | No 8 |
| 1935 Residence | Same house |
| Birth State | Delaware |
| Birth Country | United States |
| Birthplace (normalized) | delaware |
| Township / Ward | Wilmington City |
| Est. Birth Year | ~1868 |
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 Mary | Age | Birth yr |
|---|---|---|---|---|
| Miriam Donovan | Daughter | — | 37 | ~1903 |
| John Donovan | Head | — | 74 | ~1866 |
| Katherine Donovan | Other | — | 65 | ~1875 |
| Mary Donovan | Spouse | — | 72 | ~1868 |
Census Appearances
1920
New Castle, …
Spouse, age 52
New Castle, Delaware · implied b. ~1868 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Donovan |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 52 |
| Marital Status | Married |
| Birthplace | Delaware |
| Father's Birthplace | Delaware |
| Mother's Birthplace | Delaware |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Delaware |
| Birth Country | United States |
| Birthplace (normalized) | delaware |
1930
New Castle, …
Spouse, age 62
New Castle, Delaware · implied b. ~1868 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Donovan |
| Given Name | Mary B. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 62 |
| Marital Status | Married |
| Birthplace | Delaware |
| Age at First Marriage | 25 |
| Father's Birthplace | North Ireland |
| Mother's Birthplace | North Ireland |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Delaware |
| Birth Country | United States |
| Birthplace (normalized) | delaware |
1940
New-Castle-County, Delaware
Spouse, age 72
New-Castle-County, Delaware · implied b. ~1868 — 4 household members
| Surname | Donovan |
| Given Name | Mary B. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 72 |
| Marital Status | Married |
| Birthplace | Delaware |
| 1935 Residence (City) | Wilmington City |
| 1935 Residence (County) | New Castle |
| Highest Grade | No 8 |
| 1935 Residence | Same house |
| 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 Donovan across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Donovan
Spouse · 1940 · age 72 · b. ~1868 · Delaware
★ You are viewing this record
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-t0627-00550-00340)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Marsha L. Low | 82 | Head | — | Delaware |
| 2 | Mary F. Lofland | 81 | Sister | — | Delaware |
| 3 | Elmer J. Poole | 46 | Head | Fireman | New York |
| 4 | Matilda La Porte | 42 | Wife | — | Delaware |
| 5 | Edw. J. Jr. La Porte | 17 | Son | Office Boy | Delaware |
| 6 | Norman La Porte | 13 | Son | — | Delaware |
| 7 | John J. Donovan | 74 | Head | Superintendent | England |
| 8 | Mary B. Donovan THIS PERSON | 72 | Wife | — | Delaware |
| 9 | Miriam Donovan | 37 | Daughter | Registered Nurse | Delaware |
| 10 | Katherine Donovan | 65 | Sister | Buyer | England |
| 11 | Stephen Marangos | 49 | Head | Cook | Turkey |
| 12 | Betty Marangos | 40 | Wife | Cook | Turkey |
| 13 | Thomas Hadgis | 39 | Lodger | Cook | Greece |
| 14 | Geo. Sampson | 58 | Head | Clerk In Machine Shop | England |
| 15 | Mary J. Sampson | 59 | Wife | — | England |
| 16 | Carrie Kane | 51 | Lodger | Ironer | Maryland |
| 17 | John H. Hallewell | 31 | Head | Stock Clerk | New Jersey |
| 18 | Leslie A. Hallewell | 24 | Wife | Trained Nurse | Pennsylvania |
| 19 | Annie Frank | 69 | Head | — | Russia |
| 20 | Wm. L. Perkins | 39 | Head | Mechanic | Florida |
| 21 | Dina L. Perkins | 36 | Wife | Machine Op. | Georgia |
| 22 | Charles L. Downing | 71 | Head | Engineer | Delaware |
| 23 | Lily C. Downing | 64 | Wife | — | Delaware |
| 24 | Norman J. Downing | 33 | Son | Salesman | Delaware |
| 25 | David L. Sr. Ellwood | 43 | Head | Office Clerk | Delaware |
| 26 | Margaret Ellwood | 37 | Wife | — | Delaware |
| 27 | David L. Jr. Ellwood | 16 | Son | — | Delaware |
| 28 | Jeanne Ellwood | 15 | Daughter | — | Delaware |
| 29 | Louise Ellwood | 14 | Daughter | — | Delaware |
| 30 | Mary Ann Ellwood | 5 | Daughter | — | Delaware |
| 31 | Joseph Ellwood | 2 | Son | — | Delaware |
| 32 | John T. Scott | 58 | Head | Finisher | Delaware |
| 33 | Emma Scott | 56 | Wife | Retail Candy Seller | Delaware |
| 34 | Ira Emerson | 55 | Head | Carpenter | Delaware |
| 35 | Mary Emerson | 51 | Wife | — | Delaware |
| 36 | Samuel A. Gregory | 26 | Stepson | Attending Business College | Pennsylvania |
| 37 | Geo. S. Latham | 64 | Head | Woodworker | Delaware |
| 38 | Luella Latham | 61 | Wife | — | Delaware |
| 39 | Edna M. Latham | 25 | Daughter | Typist & Clerk | Delaware |
| 40 | William Connelly | 35 | Head | Machinist | 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)