TM
Thomas Mcdermott — 1940 US Census Record
Model Tree available1940 United States Federal Census · Ramsey-County, Minnesota
Our Model Tree links this Thomas Mcdermott across the 1920, 1930 and 1940 US Censuses in Ramsey-County, Minnesota (XGBoost, ~Confirmed), with identified parents Howard & Thomas — first a head (b.~1916), then head of a 5-person household.
Age 24
b. ~1916
Male
Head
Born: Minnesota
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Ramsey-County, Minnesota |
| Surname | McDermott |
| Given Name | Thomas |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Married |
| Birthplace | Minnesota |
| 1935 Residence (City) | St. Paul City |
| 1935 Residence (County) | Ramsey |
| Additional Details | |
| Occupation | Service attendant |
| Industry | Own oil station |
| Class of Worker | OA |
| Hours Worked | 60 |
| Income (1939) | 156 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
| Occupation | Service Attendant |
| Township / Ward | St Paul City |
| Est. Birth Year | ~1916 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Thomas | Age | Birth yr |
|---|---|---|---|---|
| Carol Mcdermott | Daughter | — | 1 | ~1939 |
| Thomas Mcdermott | Son | — | 2 | ~1938 |
| Patrick Mcdermott | Son | — | ~1940 | |
| Thomas Mcdermott | Head | — | 24 | ~1916 |
| Ethel Mcdermott | Spouse | — | 23 | ~1917 |
Census Appearances
1920
Ramsey, Minnesota
Son, age 4
Ramsey, Minnesota · implied b. ~1916 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McDermott |
| Given Name | Thomas |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Minnesota |
| Father's Birthplace | Minnesota |
| Mother's Birthplace | Minnesota |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
1930
Ramsey, Minnesota
Son, age 14
Ramsey, Minnesota · implied b. ~1916 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McDermott |
| Given Name | Thomas R. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Minnesota |
| Father's Birthplace | Minnesota |
| Mother's Birthplace | Minnesota |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
1940
Ramsey-County, Minnesota
Head, age 24
Ramsey-County, Minnesota · implied b. ~1916 — 5 household members
| Surname | McDermott |
| Given Name | Thomas |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Married |
| Birthplace | Minnesota |
| 1935 Residence (City) | St. Paul City |
| 1935 Residence (County) | Ramsey |
| Occupation | Service attendant |
| Industry | Own oil station |
| Class of Worker | OA |
| Hours Worked | 60 |
| Income (1939) | 156 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
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 (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Howard Mcdermott (~0.92 confidence) and father Thomas Mcdermott (~0.92 confidence) and mother Mamie Mcdermott (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Howard Mcdermott
b. ~1895
Source father
● Household
· direct · ~0.92
Father
Thomas Mcdermott
b. ~1895
Source father
● Household
· direct · ~0.92
Mother
Mamie Mcdermott
b. ~1897
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Thomas Mcdermott
Head · 1940 · age 24 · b. ~1916 · Minnesota
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Ramsey-County, Minnesota
Open full size
1940 US Federal Census — Ramsey-County, Minnesota
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01996-00585)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Robert Hamp | 23 | Son | Salesclerk | Minnesota |
| 2 | Elizabeth Hamp | 15 | Daughter | — | Minnesota |
| 3 | John Hilger | 50 | Head | Book Binding | Minnesota |
| 4 | Gertrude Hilger | 44 | Wife | — | Minnesota |
| 5 | Marie Hilger | 26 | Daughter | Labeler | Minnesota |
| 6 | Anna Hilger | 75 | Mother | — | Germany |
| 7 | Thomas Mcdermott THIS PERSON | 24 | Head | Service Attendant | Minnesota |
| 8 | Ethel Mcdermott | 23 | Wife | — | Minnesota |
| 9 | Thomas Jr Mcdermott | 2 | Son | — | Minnesota |
| 10 | Carol Ethel Mcdermott | 1 | Daughter | — | Minnesota |
| 11 | Patrick Mcdermott | 0 | Son | — | Minnesota |
| 12 | Berndt Jacobson | 20 | Head | Machinist | Minnesota |
| 13 | Wilma Jacobson | 18 | Wife | — | Minnesota |
| 14 | Robert Jacobson | 1 | Son | — | Minnesota |
| 15 | David J Wruck | 36 | Head | Butcher | Minnesota |
| 16 | Gertrude Wruck | 33 | Wife | — | Wisconsin |
| 17 | Leonard Wruck | 13 | Son | — | Minnesota |
| 18 | David Jr Wruck | 12 | Son | — | Minnesota |
| 19 | Paul P Weber | 36 | Head | Upholsterer | Germany |
| 20 | Erma Weber | 33 | Wife | — | Germany |
| 21 | Richard Weber | 8 | Son | — | Minnesota |
| 22 | Mary Lou Weber | 6 | Daughter | — | Minnesota |
| 23 | Pauline Weber | 3 | Daughter | — | Minnesota |
| 24 | Mathilda Johnson | 32 | Lodger | Registered Nurse | North Dakota |
| 25 | Adeline Lupry | 30 | Lodger | Waitress | Minnesota |
| 26 | John E Mcmahon | 52 | Head | Purchasing Agent | Wisconsin |
| 27 | Clara Mcmahon | 52 | Wife | — | Minnesota |
| 28 | John Mcmahon | 24 | Son | Radio Engineer | Minnesota |
| 29 | Joan Mcmahon | 20 | Daughter | — | Minnesota |
| 30 | Owen J Judge | 46 | Head | Auditor | Minnesota |
| 31 | Rowena Judge | 43 | Wife | — | Indiana |
| 32 | Margaret Judge | 10 | Daughter | — | Minnesota |
| 33 | Owen Jr Judge | 7 | Son | — | Minnesota |
| 34 | Philip Schwanekamp | 60 | Head | Bartender | Michigan |
| 35 | Sadie Schwanekamp | 50 | Wife | — | Minnesota |
| 36 | Eliza Petter | 52 | Head | Power Machine Operator | Minnesota |
| 37 | Martha Petter | 50 | Sister | Hand Wrapper | Minnesota |
| 38 | Christine Petter | 45 | Sister | — | Minnesota |
| 39 | Daniel W O'Dea | 54 | Head | Book Binder | Minnesota |
| 40 | Kathryn O'Dea | 48 | Wife | — | Minnesota |
Pedigree Summary
Thomas
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 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)