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Mary Mcconnell — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Trumbull-County, Ohio
Our Model Tree links this Mary Mcconnell across the 1930 and 1940 US Censuses in Trumbull-County, Ohio (XGBoost, ~Confirmed) — first a daughter (b.~1925), then head of a 7-person household.
Age 15
b. ~1925
Female
Daughter
Born: Ohio
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Trumbull-County, Ohio |
| Surname | McConnell |
| Given Name | Mary Louise |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Liberty township |
| 1935 Residence (County) | Trumbull |
| Additional Details | |
| Highest Grade | H 1 |
| 1935 Residence | Same place |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
| Township / Ward | Liberty Township |
| 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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Edward Mcconnell | Head | — | 59 | ~1881 |
| Meara Mcconnell | Son | — | 25 | ~1915 |
| Ruth Mcconnell | Daughter | — | 22 | ~1918 |
| Louise Mcconnell | Spouse | — | 51 | ~1889 |
| Phillip Mcconnell | Son | — | 12 | ~1928 |
| Mary Mcconnell | Daughter | — | 15 | ~1925 |
| William Mcconnell | Son | — | 18 | ~1922 |
Census Appearances
1930
Trumbull, Ohio
Daughter, age 5
Trumbull, Ohio · implied b. ~1925 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McConnell |
| Given Name | Mary L. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1940
Trumbull-County, Ohio
Daughter, age 15
Trumbull-County, Ohio · implied b. ~1925 — 7 household members
| Surname | McConnell |
| Given Name | Mary Louise |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Liberty township |
| 1935 Residence (County) | Trumbull |
| Highest Grade | H 1 |
| 1935 Residence | Same place |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
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 Mcconnell across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Mcconnell
Daughter · 1940 · age 15 · b. ~1925 · Ohio
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Sibling
Meara Mcconnell
Sibling · 1940 · age 25
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Mcconnell
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ruth Mcconnell
Sibling · 1940 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Phillip Mcconnell
Sibling · 1940 · age 12
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 — Trumbull-County, Ohio
Open full size
1940 US Federal Census — Trumbull-County, Ohio
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03158-00314)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Barbara J. Neville | 6 | daughter | — | Ohio |
| 2 | Sandra M. Neville | 5 | daughter | — | Ohio |
| 3 | Jay Neville | 3 | son | — | Ohio |
| 4 | Lee Neville | 0 | son | — | Ohio |
| 5 | Margaret Ulrich | 63 | mother-in-law | — | New York |
| 6 | William Kwantrowich | 61 | Head | Farmer | Austria |
| 7 | Pearl Kwantrowich | 55 | wife | — | Austria |
| 8 | Steve Kwantrowich | 28 | son | Mechanic | Ohio |
| 9 | John Kwantrowich | 29 | son | Boat Loader | Ohio |
| 10 | Mable Kwantrowich | 18 | daughter-in-law | — | Massachusetts |
| 11 | Edward Mcconnell | 59 | Head | Farmer | Ohio |
| 12 | Louise Mcconnell | 51 | wife | — | Ohio |
| 13 | Meara Mcconnell | 25 | son | Farmer | Ohio |
| 14 | Ruth Mcconnell | 22 | daughter | New Work | Ohio |
| 15 | William Mcconnell | 18 | son | — | Ohio |
| 16 | Mary Louise Mcconnell THIS PERSON | 15 | daughter | — | Ohio |
| 17 | Phillip Mcconnell | 12 | son | — | Ohio |
| 18 | Joseph Todd | 35 | Head | General Insurance Co | Pennsylvania |
| 19 | Isabel Todd | 30 | wife | — | Pennsylvania |
| 20 | Samantha Todd | 3 | daughter | — | Ohio |
| 21 | George Dingledy | 48 | Head | Truck Driver | Ohio |
| 22 | Irene Dingledy | 46 | wife | — | Pennsylvania |
| 23 | William H. Kollman | 54 | Head | Owner | Ohio |
| 24 | Edna Kollman | 54 | wife | — | Pennsylvania |
| 25 | Charles Kollman | 19 | son | — | Ohio |
| 26 | Rosemary Gautschi | 58 | sister | Seamstress | Ohio |
| 27 | Narcissa Collins | 20 | niece | Secretary | Ohio |
| 28 | Erik Chadell | 57 | Head | Reproduction | Sweden |
| 29 | Helene Chadell | 56 | wife | — | New York |
| 30 | Robert Chadell | 31 | son | Electrician | New York |
| 31 | Delbert Dull | 36 | Head | Chiropodist | Ohio |
| 32 | Mary F. Dull | 36 | wife | — | Ohio |
| 33 | Richard Dull | 10 | son | — | Ohio |
| 34 | Rodger Dull | 7 | son | — | Ohio |
| 35 | Dianne Dull | 3 | daughter | — | Ohio |
| 36 | Ernest Root | 53 | Head | Farm Laborer | Connecticut |
| 37 | Julia Root | 33 | wife | — | Ohio |
| 38 | Teddy C. Crateley | 13 | son | — | Ohio |
| 39 | Norma Crateley | 10 | daughter | — | Ohio |
| 40 | John Root | 74 | father-in-law | — | Ohio |
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)