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James Mcdermott — 1930 US Census Record
Model Tree available1930 United States Federal Census · Philadelphia, Pennsylvania
Our Model Tree links this James Mcdermott across the 1920, 1930 and 1940 US Censuses in Philadelphia, Pennsylvania (XGBoost, ~Confirmed), with identified parents Frank & James — first a son (b.~1909), then head of a 7-person household.
Age 21
b. ~1909
Male
Son
Born: Pennsylvania
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Philadelphia, Pennsylvania |
| Surname | McDermott |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Additional Details | |
| Occupation | Hose Examiner |
| Industry | Dental Co |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Hose Examiner |
| Township / Ward | Philadelphia City |
| Est. Birth Year | ~1909 |
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 1930 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| Anna Mcdermott | Daughter | — | 19 | ~1911 |
| Rebecca Mcdermott | Daughter | — | 23 | ~1907 |
| Helen Mcdermott | Daughter | — | 17 | ~1913 |
| Frank Mcdermott | Head | — | 51 | ~1879 |
| Annie Mcdermott | Other | — | 55 | ~1875 |
| Thomas Mcdermott | Son | — | 15 | ~1915 |
| James Mcdermott | Son | — | 21 | ~1909 |
Census Appearances
1920
Philadelphia, Pennsylvania
Son, age 11
Philadelphia, Pennsylvania · implied b. ~1909 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McDermott |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Philadelphia, Pennsylvania
Son, age 21
Philadelphia, Pennsylvania · implied b. ~1909 — 7 household members
| Surname | McDermott |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Occupation | Hose Examiner |
| Industry | Dental Co |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Philadelphia-County, Pennsylvania
Head, age 31
Philadelphia-County, Pennsylvania · implied b. ~1909 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mc Dermot |
| Given Name | Jim |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Phila |
| 1935 Residence (County) | Phila |
| Occupation | Custodian |
| Industry | City Schools |
| Class of Worker | PW |
| Hours Worked | 36 |
| Income (1939) | 740 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
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 James Mcdermott across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Frank Mcdermott (~0.92 confidence) and father James Mcdermott (~0.92 confidence) and mother Ellise Mcdermott (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Frank Mcdermott
b. ~1879
Source father
● Household
· direct · ~0.92
Father
James Mcdermott
b. ~1880
Source father
● Household
· direct · ~0.92
Mother
Ellise Mcdermott
b. ~1886
Source mother
● Household
· direct · ~0.92
This person
Anchor record
James Mcdermott
Son · 1930 · age 21 · b. ~1909 · Pennsylvania
★ You are viewing this record
Sibling
Thomas Mcdermott
Sibling · 1930 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Helen Mcdermott
Sibling · 1930 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Anna Mcdermott
Sibling · 1930 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Rebecca Mcdermott
Sibling · 1930 · age 23
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 — Philadelphia, Pennsylvania
Open full size
1930 US Federal Census — Philadelphia, Pennsylvania
Page Contents
50 people indexed on this census page (ia:1930:fifteenthcensus00reel2130rs:0385)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Kathryn Mcbride | 11 | Daughter | — | Pennsylvania |
| 2 | Anna Mcbride | 9 | Daughter | — | Pennsylvania |
| 3 | Frank Mcdermott | 51 | Head | Ironworker | Pennsylvania |
| 4 | Annie Mcdermott | 55 | Wife-H | — | Pennsylvania |
| 5 | Rebecca Mcdermott | 23 | Daughter | Hose Examiner | Pennsylvania |
| 6 | James Mcdermott THIS PERSON | 21 | Son | Hose Examiner | Pennsylvania |
| 7 | Anna Mcdermott | 19 | Daughter | Examiner | Pennsylvania |
| 8 | Helen Mcdermott | 17 | Daughter | — | Pennsylvania |
| 9 | Thomas Mcdermott | 15 | Son | — | Pennsylvania |
| 10 | Elihu A. Curdy | 40 | Head | Conductor | Delaware |
| 11 | Anna Curdy | 37 | Wife-H | — | Maryland |
| 12 | William J. Curdy | 13 | Son | — | Delaware |
| 13 | George C. Curdy | 10 | Son | — | Delaware |
| 14 | Alice M. Curdy | 5 | Daughter | — | Pennsylvania |
| 15 | Michael Dorazio | 43 | Head | Supt. | Italy |
| 16 | Anna Dorazio | 43 | Wife-H | — | Pennsylvania |
| 17 | Joseph M. Dorazio | 22 | Son | Pressman | Pennsylvania |
| 18 | Vera Dorazio | 17 | Daughter | — | Pennsylvania |
| 19 | Robert Dorazio | 12 | Son | — | Pennsylvania |
| 20 | Norman Dorazio | 7 | Son | — | Pennsylvania |
| 21 | William Cox | 55 | Head | Carbuilder | Delaware |
| 22 | Anna Cox | 52 | Wife-H | — | Delaware |
| 23 | Frank Seery | 27 | Head | Icedealer | Pennsylvania |
| 24 | Anna Seery | 24 | Wife-H | — | New York |
| 25 | Franklin Willoughby | 72 | Head | Foreman | Canada-English |
| 26 | Annie N. Willoughby | 53 | Wife-H | — | Germany |
| 27 | Rossman Osborn Willoughby | 38 | Nephew | Engraver | Maryland |
| 28 | John Melville | 50 | Head | Coppersmith | Rhode Island |
| 29 | Gertrude Melville | 49 | Wife-H | — | Pennsylvania |
| 30 | Mary Kemble | 71 | Mother-in-law | — | Maryland |
| 31 | Elizabeth Lebon | 71 | Head | — | Maryland |
| 32 | Josephine V. Lebon | 46 | Daughter | — | Pennsylvania |
| 33 | Emily M. Lebon | 37 | Daughter | Maid | Pennsylvania |
| 34 | Charles E. Murray | 37 | Son-in-law | Cableman | Pennsylvania |
| 35 | Elizabeth V. Murray | 43 | Daughter | — | Pennsylvania |
| 36 | John Tannock | 56 | Head | Baker | Scotland |
| 37 | Mary Tannock | 43 | Wife-H | — | Massachusetts |
| 38 | Catherine B. Tannock | 17 | Daughter | Operator | Massachusetts |
| 39 | Walter D. Tannock | 14 | Son | — | Pennsylvania |
| 40 | Teresa M. Tannock | 12 | Daughter | — | Pennsylvania |
| 41 | John Tannock | 9 | Son | — | Pennsylvania |
| 42 | Raymond Tannock | 8 | Son | — | Pennsylvania |
| 43 | Loretta Tannock | 2 | Daughter | — | Pennsylvania |
| 44 | Harry Salomon | 40 | Head | Agent | Irish Free State |
| 45 | Catherine Salomon | 37 | Wife-H | — | Illinois |
| 46 | Charles Salomon | 12 | Son | — | Kentucky |
| 47 | Margaret Salomon | 8 | Daughter | — | Pennsylvania |
| 48 | Margaret Johnson | 30 | Sister-in-law | Stenographer | Illinois |
| 49 | William K. Guthrie | 46 | Head | Fruit Dealer | Maryland |
| 50 | Rebecca Guthrie | 31 | Wife-H | File Clerk | Pennsylvania |
Pedigree Summary
James + 4 siblings
Gen 1 · 3 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)