MD
Margaret Duffy — 1940 US Census Record
Model Tree available1940 United States Federal Census · Franklin-County, Ohio
Our Model Tree links this Margaret Duffy across the 1920, 1930 and 1940 US Censuses in Franklin-County, Ohio (XGBoost, ~Confirmed), with identified parents Marcus & Marcus — first a daughter (b.~1910), then head of a 4-person household.
Age 30
b. ~1910
Female
Daughter
Born: Ohio
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Franklin-County, Ohio |
| Surname | Duffy |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 30 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Columbus |
| 1935 Residence (County) | Franklin |
| Additional Details | |
| Highest Grade | C 1 |
| 1935 Residence | Same place |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
| Township / Ward | Columbus |
| Est. Birth Year | ~1910 |
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 Margaret | Age | Birth yr |
|---|---|---|---|---|
| Thomas Duffy | Son | — | 35 | ~1905 |
| Mary Duffy | Spouse | — | 63 | ~1877 |
| Marcus Duffy | Head | — | 62 | ~1878 |
| Margaret Duffy | Daughter | — | 30 | ~1910 |
Census Appearances
1920
Franklin, Ohio
Daughter, age 9
Franklin, Ohio · implied b. ~1911 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Duffy |
| Given Name | Margaret R. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1930
Franklin, Ohio
Daughter, age 20
Franklin, Ohio · implied b. ~1910 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Duffy |
| Given Name | Margaret R |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Can Read/Write | Yes |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1940
Franklin-County, Ohio
Daughter, age 30
Franklin-County, Ohio · implied b. ~1910 — 4 household members
| Surname | Duffy |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 30 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Columbus |
| 1935 Residence (County) | Franklin |
| Highest Grade | C 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 Margaret Duffy across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Marcus Duffy (~0.92 confidence) and father Marcus Duffy (~0.92 confidence) and father Marcus Duffy (~0.92 confidence) and mother Mary Duffy (~0.92 confidence) and mother Mary Duffy (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Marcus Duffy
b. ~1878
Source father
● Household
· direct · ~0.92
Father
Marcus Duffy
b. ~1873
Source father
● Household
· direct · ~0.92
Father
Marcus Duffy
b. ~1872
Source father
● Household
· direct · ~0.92
Mother
Mary Duffy
b. ~1873
Source mother
● Household
· direct · ~0.92
Mother
Mary Duffy
b. ~1877
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Margaret Duffy
Daughter · 1940 · age 30 · b. ~1910 · Ohio
★ You are viewing this record
Sibling
Thomas Duffy
Sibling · 1940 · age 35
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 — Franklin-County, Ohio
Open full size
1940 US Federal Census — Franklin-County, Ohio
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03242-00526)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Albert Krantz | 12 | Son | — | Ohio |
| 42 | Paul Myers | 26 | Head | Stock Clerk | Ohio |
| 43 | Jane Myers | 21 | Wife | Secretary | Ohio |
| 44 | Walter Yohnn | 33 | Head | Operator | Ohio |
| 45 | Claire J. Yohnn | 34 | Wife | Saleslady | Ohio |
| 46 | Carl Rosan | 66 | Head | — | Poland |
| 47 | Herman Rosan | 36 | Son | Salesman | Ohio |
| 48 | Theresa Butler | 73 | Head | — | Ohio |
| 49 | Edward Butler | 37 | Son | Salesman | Ohio |
| 50 | Mary Butler | 28 | Daughter | Typist | Ohio |
| 51 | Joseph Hayden | 71 | Head | Machinist | Canada |
| 52 | Mary Ann Hayden | 70 | Wife | — | Canada |
| 53 | Helen Hayden | 34 | Daughter | Teacher | Ohio |
| 54 | Marcus Duffy | 62 | Head | Salesman | Ohio |
| 55 | Mary Duffy | 63 | Wife | — | Ohio |
| 56 | Thomas Duffy | 35 | Son | Attorney | Ohio |
| 57 | Margaret Duffy THIS PERSON | 30 | Daughter | — | Ohio |
| 58 | Mary Sheels | 73 | Head | — | Ohio |
| 59 | Francis Sheels | 46 | Daughter | Paymaster | Ohio |
| 60 | Meril Posey | 46 | Head | Saleslady | Ohio |
| 61 | Hyal Gelsela | 41 | Lodger | Fireman | Ohio |
| 62 | Cora Sands | 68 | Lodger | — | Ohio |
| 63 | — | None | — | — | — |
| 64 | William Kern | 28 | Head | Shipping Clerk | Ohio |
| 65 | Goldie Kern | 26 | Wife | — | Ohio |
| 66 | Charlotte Kern | 1 | Daughter | — | Ohio |
| 67 | Mary Steurer | 69 | Head | — | Ohio |
| 68 | Jasper Borst | 81 | Head | — | New York |
| 69 | Ella Hope Borst | 41 | Daughter | Clerk | New York |
| 70 | Roscoe Boyce | 36 | Head | Shop Superintendent | New York |
| 71 | Evelyn Boyce | 27 | Wife | — | Texas |
| 72 | John Myers | 43 | Head | Carpenter | Ohio |
| 73 | Maude Myers | 49 | Wife | — | Ohio |
| 74 | Paul Myers | 12 | Son | — | Ohio |
| 75 | Beryl Dewall | 33 | Head | Clerk | Ohio |
| 76 | Dorothy Dewall | 30 | Wife | — | Ohio |
| 77 | Beryl Jr. Dewall | 12 | Son | — | Ohio |
| 78 | Albert C. Brown | 60 | Head | — | Illinois |
| 79 | Myrtle Brown | 59 | Wife | — | Ohio |
| 80 | Robert Brown | 21 | Son | Salesman | Ohio |
Pedigree Summary
Margaret + 1 sibling
Gen 1 · 5 parents
~0.92
Max depth 4 (1900–1950 window)
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)