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James Mcdermott — 1920 US Census Record
Model Tree available1920 United States Federal Census · Middlesex, Massachusetts
Our Model Tree links this James Mcdermott across the 1900, 1910 and 1920 US Censuses in Middlesex, Massachusetts (XGBoost, ~Confirmed), with identified parents Patrick & Patrick — first a son (b.~1895), then head of a 7-person household.
Age 25
b. ~1895
Male
Son
Born: Massachusetts
Married
1920 Census Record Details
| Census Year | 1920 |
| Location | Middlesex, Massachusetts |
| Surname | McDermott |
| Given Name | James P |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Additional Details | |
| Occupation | Machinist |
| Industry | Machine Shop |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Machinist |
| Township / Ward | Cambridge City |
| Est. Birth Year | ~1895 |
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 1920 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| Helen Mcdermott | Daughter | — | 28 | ~1892 |
| Andrew Mcdermott | Head | — | 53 | ~1867 |
| Louise Riley | Other | — | 16 | ~1904 |
| Andrew Mcdermott | Other | — | 1 | ~1919 |
| Ella Mcdermott | Other | — | 23 | ~1897 |
| James Mcdermott | Son | — | 25 | ~1895 |
| Andrew Mcdermott | Son | — | 22 | ~1898 |
Census Appearances
1900
Middlesex, Massachusetts
Son, age 8
Middlesex, Massachusetts · implied b. ~1892 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McDermott |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Birth Month | Oct |
| Birth Year | 1892 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | At school |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1910
Middlesex, Massachusetts
Son, age 17
Middlesex, Massachusetts · implied b. ~1893 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McDermod |
| Given Name | James W. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Machinist |
| Industry | Shop |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | English |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1920
Middlesex, Massachusetts
Son, age 25
Middlesex, Massachusetts · implied b. ~1895 — 7 household members
| Surname | McDermott |
| Given Name | James P |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Machinist |
| Industry | Machine Shop |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
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 (1900, 1910 and 1920) in Middlesex, Massachusetts, using XGBoost record linkage. Identified parents: father Patrick Mcdermott (~0.92 confidence) and father Patrick Mcdermod (~0.92 confidence) and mother Bridget Mcdermott (~0.92 confidence) and father Andrew Mcdermott (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Patrick Mcdermott
b. ~1855
Source father
● Household
· direct · ~0.92
Father
Patrick Mcdermod
b. ~1856
Source father
● Household
· direct · ~0.92
Mother
Bridget Mcdermott
b. ~1864
Source mother
● Household
· direct · ~0.92
Father
Andrew Mcdermott
b. ~1867
Source father
● Household
· direct · ~0.92
This person
Anchor record
James Mcdermott
Son · 1920 · age 25 · b. ~1895 · Massachusetts
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Sibling
Andrew Mcdermott
Sibling · 1920 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Helen Mcdermott
Sibling · 1920 · age 28
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
1920 US Federal Census — Middlesex, Massachusetts
Open full size
1920 US Federal Census — Middlesex, Massachusetts
Page Contents
50 people indexed on this census page (ia:1920:14thcensusofpopu708unit:1039)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Francis Lavery | 11 | Son | — | Massachusetts |
| 52 | James Lavery | 8 | Son | — | Massachusetts |
| 53 | William Lavery | 5 | Son | — | Massachusetts |
| 54 | John Smith | 54 | Head | Mechanic | Ireland |
| 55 | Mary Smith | 53 | Wife | — | Ireland |
| 56 | John F Baldwin | 31 | Son-in-law | Installer | Massachusetts |
| 57 | Margaret M Baldwin | 29 | Daughter | — | Massachusetts |
| 58 | Francis G Smith | 6 | Grandson | — | Massachusetts |
| 59 | Joseph Smith | 4 | Grandson | — | Massachusetts |
| 60 | Gertrude Sparrow | 13 | Ward | — | Massachusetts |
| 61 | John J Kiley | 53 | Head | Bootmaker | Ireland |
| 62 | Beatrice Kiley | 52 | Wife | — | Ireland |
| 63 | Eugene Kiley | 19 | Son | — | Massachusetts |
| 64 | Mary Kiley | 20 | Daughter | Mailing Clerk | Massachusetts |
| 65 | Catherine Chapman | 22 | Daughter | — | Massachusetts |
| 66 | William J Chapman | 27 | Son-in-law | Machinist | Massachusetts |
| 67 | Charles Kiley | 17 | Son | — | Massachusetts |
| 68 | Charles Chapman | 1 | Grandson | — | Massachusetts |
| 69 | Catherine Horgan | 69 | Head | — | Ireland |
| 70 | Arthur J Horgan | 28 | Son | Machinist | Massachusetts |
| 71 | M Josephine Horgan | 37 | Daughter | Clerk | Massachusetts |
| 72 | Anna M Lee | 72 | Sister | — | Ireland |
| 73 | John J Higgins | 34 | Head | Engineer | Massachusetts |
| 74 | Jennie M Higgins | 34 | Wife | — | New York |
| 75 | John H Higgins | 5 | Son | — | Massachusetts |
| 76 | Richard Higgins | 2 | Son | — | Massachusetts |
| 77 | Martha Macneil | 73 | Head | — | Scotland |
| 78 | Jennie Macneil | 42 | Daughter | Mailing Clerk | Massachusetts |
| 79 | Harriet F Macneil | 36 | Daughter | Milliner | Massachusetts |
| 80 | George E Robbins | 27 | Son-in-law | Laborer | Massachusetts |
| 81 | Marion G Robbins | 26 | Daughter | — | Massachusetts |
| 82 | Catherine Lusk | 48 | Lodger | Clerk | Ireland |
| 83 | Andrew J Mcdermott | 53 | Head | Superintendent | Ireland |
| 84 | James P Mcdermott THIS PERSON | 25 | Son | Machinist | Massachusetts |
| 85 | Andrew J Mcdermott | 22 | Son | Mechanic | Massachusetts |
| 86 | Helen F Mcdermott | 28 | Daughter | Dressmaker | Massachusetts |
| 87 | Ella J Mcdermott | 23 | Daughter-in-law | — | Massachusetts |
| 88 | Louise Riley | 16 | Boarder | Messenger | Massachusetts |
| 89 | Andrew J Mcdermott | 1 | Grandson | — | Massachusetts |
| 90 | Joseph J O'Connell | 37 | Head | Clerk | Massachusetts |
| 91 | Sarah O'Connell | 35 | Wife | — | Massachusetts |
| 92 | Marion O'Connell | 8 | Daughter | — | Massachusetts |
| 93 | Albert O'Connell | 1 | Son | — | Massachusetts |
| 94 | Patrick J Murphy | 55 | Head | Machinist | Massachusetts |
| 95 | Mary Murphy | 58 | Wife | — | Massachusetts |
| 96 | Charles G Hoffman | 40 | Brother-in-law | Teamster | Massachusetts |
| 97 | Arthur F Driver | 41 | Head | Pressman | New York |
| 98 | Ella Driver | 38 | Wife | — | New York |
| 99 | Raymond H Driver | 11 | Son | — | New York |
| 100 | Edward W Toomey | 32 | Head | Compositor | Massachusetts |
Pedigree Summary
James + 2 siblings
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 1920 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)