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John Mcdermott — 1930 US Census Record
Model Tree available1930 United States Federal Census · Butler, Ohio
Our Model Tree links this John Mcdermott across the 1910, 1920 and 1930 US Censuses in Butler, Ohio (XGBoost, ~Confirmed), with identified parents Thomas & Thomas — first a head (b.~1901), then head of a 3-person household.
Age 29
b. ~1901
Male
Head
Born: Ohio
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Butler, Ohio |
| Surname | McDermott |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Married |
| Birthplace | Ohio |
| Age at First Marriage | 22 |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Additional Details | |
| Occupation | Engineer |
| Industry | Steel Mill |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | 2500 |
| Veteran | R |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
| Occupation | Engineer |
| Township / Ward | Middletown City |
| Est. Birth Year | ~1901 |
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.
3 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| John Mcdermott | Head | — | 29 | ~1901 |
| John Mcdermott | Son | — | ~1930 | |
| Evelyn Mcdermott | Spouse | — | 26 | ~1904 |
Census Appearances
1910
Butler, Ohio
Son, age 9
Butler, Ohio · implied b. ~1901 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mc Dermott |
| Given Name | John R |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Can Read | Yes |
| Can Write | Yes |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1920
Butler, Ohio
Son, age 18
Butler, Ohio · implied b. ~1902 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McDermott |
| Given Name | John R. |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1930
Butler, Ohio
Head, age 29
Butler, Ohio · implied b. ~1901 — 3 household members
| Surname | McDermott |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Married |
| Birthplace | Ohio |
| Age at First Marriage | 22 |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Occupation | Engineer |
| Industry | Steel Mill |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | 2500 |
| Veteran | R |
| 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 John Mcdermott across 3 US Census years (1910, 1920 and 1930) in Butler, Ohio, using XGBoost record linkage. Identified parents: father Thomas Mc Dermott (~0.92 confidence) and father Thomas Mcdermott (~0.92 confidence) and mother Ella Mc Dermott (~0.92 confidence) and mother Ellen Mcdermott (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Thomas Mc Dermott
b. ~1878
Source father
● Household
· direct · ~0.92
Father
Thomas Mcdermott
b. ~1879
Source father
● Household
· direct · ~0.92
Mother
Ella Mc Dermott
b. ~1880
Source mother
● Household
· direct · ~0.92
Mother
Ellen Mcdermott
b. ~1881
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Mcdermott
Head · 1930 · age 29 · b. ~1901 · Ohio
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1930 US Federal Census — Butler, Ohio
Open full size
1930 US Federal Census — Butler, Ohio
Page Contents
50 people indexed on this census page (ia:1930:ohiocensus00reel1755:0221)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Harry Fryer | 50 | Head | Owner | Ohio |
| 52 | Elsie Fryer | 40 | Wife | — | Ohio |
| 53 | Betty Fryer | 9 | Daughter | — | Ohio |
| 54 | Herbert E. Kimball | 41 | Head | Machinist | Ohio |
| 55 | Grace Kimball | 39 | Wife | — | Ohio |
| 56 | Robert G. Kimball | 16 | Son | — | Ohio |
| 57 | Bernard Gibbons | 30 | Head | Repairman | Kentucky |
| 58 | Helen Gibbons | 26 | Wife | — | Kentucky |
| 59 | Shirley Gibbons | 2 | Daughter | — | Ohio |
| 60 | John Mcdermott THIS PERSON | 29 | Head | Engineer | Ohio |
| 61 | Evelyn B. Mcdermott | 26 | Wife | — | Illinois |
| 62 | John J. Mcdermott | 0 | Son | — | Ohio |
| 63 | John H. Watson | 53 | Head | Printer | Ohio |
| 64 | Earl T. Watson | 21 | Son | Printer | Illinois |
| 65 | Dorothy Watson | 20 | Daughter | — | Ohio |
| 66 | Vernon Lemmon | 37 | Head | Order Clerk | Ohio |
| 67 | Grace Lemmon | 34 | Wife | — | Ohio |
| 68 | Jack S. Lemmon | 5 | Son | — | Ohio |
| 69 | Adelaide Lemmon | 2 | Daughter | — | Ohio |
| 70 | Frank B. Hageman | 42 | Head | Time Keeper | Ohio |
| 71 | Alvena Hageman | 41 | Wife | — | Germany |
| 72 | Frank Hageman | 17 | Son | — | Ohio |
| 73 | Alvena Hageman | 15 | Daughter | — | Ohio |
| 74 | Jane Hageman | 13 | Daughter | — | Ohio |
| 75 | Charles Hageman | 11 | Son | — | Ohio |
| 76 | Alfred Hageman | 6 | Son | — | Ohio |
| 77 | John T. Griffin | 54 | Head | Carpenter | Kentucky |
| 78 | Lula Griffin | 49 | Wife | — | Kentucky |
| 79 | Walter Griffin | 25 | Son | Carpenter | Kentucky |
| 80 | Paul Griffin | 24 | Son | — | Kentucky |
| 81 | Betty Griffin | 25 | Daughter | — | Kentucky |
| 82 | Dewey Gibson | 25 | Son-in-law | — | Kentucky |
| 83 | Rebecca Gibson | 71 | Mother-in-law | — | Kentucky |
| 84 | Walter Griffin | 2 | Grandson | — | Ohio |
| 85 | Donald H. Jun | 28 | Head | Salesman | Ohio |
| 86 | Mildred Jun | 28 | Wife | — | Pennsylvania |
| 87 | Lois M. Jun | 1 | Daughter | — | Ohio |
| 88 | Merlin P. Schrock | 29 | Head | Realtor | Ohio |
| 89 | Mildred Schrock | 31 | Wife | — | Ohio |
| 90 | Ruth E. Schrock | 3 | Daughter | — | Ohio |
| 91 | James G. Morgan | 44 | Head | Foreman | Ohio |
| 92 | Katherine Morgan | 44 | Wife | — | Ohio |
| 93 | James B. Morgan | 18 | Son | — | Ohio |
| 94 | John P. Morgan | 16 | Son | — | Ohio |
| 95 | Thomas C. Morgan | 14 | Son | — | Ohio |
| 96 | Theodore Mountain | 44 | Head | Ladleman | Indiana |
| 97 | Bernadine Mountain | 43 | Wife | Laundress | Ohio |
| 98 | Bernice Mountain | 13 | Daughter | — | Ohio |
| 99 | Cletus E. Mountain | 10 | Son | — | Ohio |
| 100 | Mary R. Mountain | 4 | Daughter | — | Ohio |
Pedigree Summary
John
Gen 1 · 4 parents
~0.92
Max depth 4 (1900–1950 window)
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)