TM
Thomas Mcdermott — 1920 US Census Record
Linked across censuses1920 United States Federal Census · St Louis, Missouri
Our Model Tree links this Thomas Mcdermott across the 1900, 1910 and 1920 US Censuses in St Louis, Missouri (XGBoost, ~Confirmed) — first a head (b.~1868), then head of a 4-person household.
Age 52
b. ~1868
Male
Head
Born: Ireland
Married
1920 Census Record Details
| Census Year | 1920 |
| Location | St Louis, Missouri |
| Surname | McDermott |
| Given Name | Thomas |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 52 |
| Marital Status | Married |
| Birthplace | Ireland |
| Year of Immigration | 1883 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Additional Details | |
| Occupation | Policeman |
| Industry | City |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Home Owned/Rented | R |
| Birth Country | Ireland |
| Year of Naturalization | 1888 |
| Birthplace (normalized) | ireland |
| Occupation | Policeman |
| Township / Ward | St Louis City |
| Est. Birth Year | ~1868 |
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 1920 census.
| Name | Relation to head | Relative to Thomas | Age | Birth yr |
|---|---|---|---|---|
| Margaret Mcdermott | Spouse | — | 54 | ~1866 |
| Thomas Mcdermott | Son | — | 9 | ~1911 |
| Thomas Mcdermott | Head | — | 52 | ~1868 |
| Matthew Mcdermott | Son | — | 26 | ~1894 |
Census Appearances
1900
City St …
Head, age 37
City St Louis, Missouri · implied b. ~1863 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McDermott |
| Given Name | Thomas |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 37 |
| Marital Status | Married |
| Birthplace | Ireland |
| Birth Month | Feb |
| Birth Year | 1863 |
| Year of Immigration | 1870 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Teamster |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1910
St Louis, …
Head, age 46
St Louis, Missouri · implied b. ~1864 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McDermott |
| Given Name | Thomas |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 46 |
| Marital Status | Married |
| Birthplace | Ireland |
| Years Married | 24 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Policeman |
| Industry | City |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1920
St Louis, …
Head, age 52
St Louis, Missouri · implied b. ~1868 — 4 household members
| Surname | McDermott |
| Given Name | Thomas |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 52 |
| Marital Status | Married |
| Birthplace | Ireland |
| Year of Immigration | 1883 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Policeman |
| Industry | City |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Home Owned/Rented | R |
| Birth Country | Ireland |
| Year of Naturalization | 1888 |
| Birthplace (normalized) | ireland |
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 Thomas Mcdermott across 3 US Census years (1900, 1910 and 1920) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Thomas Mcdermott
Head · 1920 · age 52 · b. ~1868 · Missouri
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1920 US Federal Census — St Louis, Missouri
Open full size
1920 US Federal Census — St Louis, Missouri
Page Contents
49 people indexed on this census page (ia:1920:14thcensusofpopu953unit:0128)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Anna Strenemeyer | 17 | Daughter | — | Missouri |
| 52 | Catharine Macolem | 44 | Head | — | Ohio |
| 53 | Gladys Cox | 18 | Daughter | Merchant | Indiana |
| 54 | Louis Cox | 1 | Grand Son | — | Missouri |
| 55 | Robert Johnson | 17 | Son | — | Missouri |
| 56 | Fred Mayer | 57 | Head | Merchant | Illinois |
| 57 | Linda Mayer | 53 | Wife | — | Missouri |
| 58 | Linda Mayer | 24 | Daughter | — | Missouri |
| 59 | Martha Mayer | 21 | Daughter | — | Missouri |
| 60 | George Muench | 52 | Head | Decorator | Missouri |
| 61 | Anna Muench | 45 | Wife | — | Germany |
| 62 | Florence Muench | 24 | Daughter | Saleswoman | Missouri |
| 63 | Arthur Hughes | 57 | Head | Clerk | Missouri |
| 64 | Anna Hughes | 54 | Wife | — | Illinois |
| 65 | Arthur J. Hughes | 19 | Son | Chauffeur | Missouri |
| 66 | William Hughes | 18 | Son | — | Missouri |
| 67 | Emma E. Hughes | 16 | Daughter | — | Missouri |
| 68 | Thomas Mcdermott THIS PERSON | 52 | Head | Policeman | Ireland |
| 69 | Margaret Mcdermott | 54 | Wife | — | Ireland |
| 70 | Matthew Mcdermott | 26 | Son | Policeman | Missouri |
| 71 | Thomas Mcdermott | 9 | Son | — | Missouri |
| 72 | John Hartmann | 51 | Head | Trimmer | Westphalia |
| 73 | Lottie Hartmann | 51 | Wife | — | New York |
| 74 | Lucile Hartmann | 22 | Daughter | Stenographer | Missouri |
| 75 | Charles Stevens | 60 | Head | Carpenter | Massachusetts |
| 76 | Mary Stevens | 60 | Wife | — | Missouri |
| 77 | Pearl Stevens | 20 | Daughter | Stenographer | Missouri |
| 78 | Edna Stevens | 18 | Daughter | Stenographer | Missouri |
| 79 | George Stevens | 21 | Son | Clerk | Missouri |
| 80 | Henry Kastrup | 58 | Head | Laborer | Missouri |
| 81 | Emma Kastrup | 56 | Wife | — | Missouri |
| 82 | Viola Kastrup | 30 | Daughter | Dressmaker | Missouri |
| 83 | Carolina Kastrup | 76 | Mother | — | Westphalia |
| 84 | Arthur Kastrup | 35 | Head | Shipping Clerk | Missouri |
| 85 | Carrie Kastrup | 31 | Wife | — | Missouri |
| 86 | Arthur Kastrup | 12 | Son | — | Missouri |
| 87 | Wm. Heuman | 56 | Head | Cement Mix | Tennessee |
| 88 | Dena Heuman | 53 | Wife | — | Missouri |
| 89 | Virginia Heuman | 10 | Daughter | — | Missouri |
| 90 | Christopher Smith | 40 | Head | Detective | Missouri |
| 91 | Catherine Smith | 41 | Wife | — | Missouri |
| 92 | Christopher Smith | 16 | Son | Stenciler | Missouri |
| 93 | Adele Smith | 13 | Daughter | — | Missouri |
| 94 | Mary Smith | 11 | Daughter | — | Missouri |
| 95 | Margaret Smith | 10 | Daughter | — | Missouri |
| 96 | Frances Smith | 6 | Son | — | Missouri |
| 97 | Julia Smith | 3 | Daughter | — | Missouri |
| 98 | John Freivogel | 60 | Head | Blacksmith | Illinois |
| 99 | Henrietta Freivogel | 57 | Wife | — | Illinois |
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)