TM
Thomas Mcdermott — 1940 US Census Record
Model Tree available1940 United States Federal Census · Custer-County, Nebraska
Our Model Tree links this Thomas Mcdermott across the 1920, 1930 and 1940 US Censuses in Custer-County, Nebraska (XGBoost, ~Confirmed), with identified parents Bernard & Donna — first a son (b.~1910), then head of a 4-person household.
Age 30
b. ~1910
Male
Son
Born: Nebraska
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Custer-County, Nebraska |
| Surname | McDermott |
| Given Name | Thomas B. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 30 |
| Marital Status | Single |
| Birthplace | Nebraska |
| 1935 Residence (City) | Kilfoil Twp |
| 1935 Residence (County) | Custer |
| Additional Details | |
| Occupation | Laborer |
| Industry | Farm |
| Class of Worker | PW |
| Hours Worked | 60 |
| Income (1939) | 400 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Nebraska |
| Birth Country | United States |
| Birthplace (normalized) | nebraska |
| Occupation | Laborer |
| Township / Ward | Kilfoil Twp |
| Est. Birth Year | ~1910 |
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 1940 census.
| Name | Relation to head | Relative to Thomas | Age | Birth yr |
|---|---|---|---|---|
| Donna Mcdermott | Spouse | — | 65 | ~1875 |
| Irene Mcdermott | Daughter | — | 29 | ~1911 |
| Bernard Mcdermott | Head | — | 64 | ~1876 |
| Thomas Mcdermott | Son | — | 30 | ~1910 |
Census Appearances
1920
Custer, Nebraska
Son, age 10
Custer, Nebraska · implied b. ~1910 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McDermott |
| Given Name | Thomas J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Nebraska |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Indiana |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Nebraska |
| Birth Country | United States |
| Birthplace (normalized) | nebraska |
1930
Custer, Nebraska
Son, age 20
Custer, Nebraska · implied b. ~1910 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McDermott |
| Given Name | Thomas B. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Nebraska |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Indiana |
| Occupation | Laborer |
| Industry | General Farm |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Nebraska |
| Birth Country | United States |
| Birthplace (normalized) | nebraska |
1940
Custer-County, Nebraska
Son, age 30
Custer-County, Nebraska · implied b. ~1910 — 4 household members
| Surname | McDermott |
| Given Name | Thomas B. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 30 |
| Marital Status | Single |
| Birthplace | Nebraska |
| 1935 Residence (City) | Kilfoil Twp |
| 1935 Residence (County) | Custer |
| Occupation | Laborer |
| Industry | Farm |
| Class of Worker | PW |
| Hours Worked | 60 |
| Income (1939) | 400 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Nebraska |
| Birth Country | United States |
| Birthplace (normalized) | nebraska |
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 Bernard Mcdermott (~0.92 confidence) and mother Donna Mcdermott (~0.92 confidence) and mother Donna Mcdermott (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Bernard Mcdermott
b. ~1872
Source father
● Household
· direct · ~0.92
Mother
Donna Mcdermott
b. ~1875
Source mother
● Household
· direct · ~0.92
Mother
Donna Mcdermott
b. ~1878
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Thomas Mcdermott
Son · 1940 · age 30 · b. ~1910 · Nebraska
★ You are viewing this record
Sibling
Irene Mcdermott
Sibling · 1940 · age 29
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
1940 US Federal Census — Custer-County, Nebraska
Open full size
1940 US Federal Census — Custer-County, Nebraska
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02242-00857)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | George N. Jacquot | 53 | Head | Farmer | Nebraska |
| 2 | Mary L. Jacquot | 53 | Wife | — | Iowa |
| 3 | Charles H. Jacquot | 21 | Son | Laborer | Nebraska |
| 4 | Bernice L. Jacquot | 17 | Daughter | — | Nebraska |
| 5 | Estella V. Fredway | 67 | Head | — | Iowa |
| 6 | Guy L. Fredway | 47 | Son | Farmer | Nebraska |
| 7 | Frank M. Smith | 70 | Head | Farmer | Iowa |
| 8 | Josie M. Smith | 71 | Wife | — | Iowa |
| 9 | Edmond M. Smith | 43 | Son | Farmer | Iowa |
| 10 | Oma B. Smith | 40 | Daughter | — | Iowa |
| 11 | John A. Teahon | 40 | Head | Farmer | Nebraska |
| 12 | Mary M. Teahon | 42 | Wife | — | Iowa |
| 13 | Margery M. Teahon | 18 | Daughter | Maid | Nebraska |
| 14 | Robert D. Teahon | 17 | Son | Assistant To Farmer | Nebraska |
| 15 | Arlene A. Teahon | 14 | Daughter | — | Nebraska |
| 16 | Betty A. Teahon | 13 | Daughter | — | Nebraska |
| 17 | Lucille H. Teahon | 9 | Daughter | — | Nebraska |
| 18 | Bernard Mcdermott | 64 | Head | Farmer | Iowa |
| 19 | Donna C. Mcdermott | 65 | Wife | — | Indiana |
| 20 | Thomas B. Mcdermott THIS PERSON | 30 | Son | Laborer | Nebraska |
| 21 | Irene E. Mcdermott | 29 | Daughter | — | Nebraska |
| 22 | Thomas G. Condon | 40 | Head | Farmer | Nebraska |
| 23 | Bernice V. Condon | 37 | Wife | — | Illinois |
| 24 | Lenore M. Condon | 14 | Daughter | — | Nebraska |
| 25 | Lois L. Condon | 10 | Daughter | Assistant To Teacher | Nebraska |
| 26 | Geraldine D. Condon | 9 | Daughter | — | Nebraska |
| 27 | Thomas G. Jr. Condon | 4 | Son | — | Nebraska |
| 28 | Arthur Sweeney | 65 | Head | Farmer | Illinois |
| 29 | Jennie Sweeney | 54 | Wife | — | Iowa |
| 30 | Charles Fiorelli | 57 | Head | Farmer | Italy |
| 31 | Viggia Fiorelli | 51 | Wife | — | Italy |
| 32 | Louis Fiorelli | 17 | Son | — | Nebraska |
| 33 | Frank Fiorelli | 15 | Son | — | Nebraska |
| 34 | Marie Fiorelli | 8 | Daughter | — | Nebraska |
| 35 | John H. Williams | 50 | Head | Farmer | Nebraska |
| 36 | Goldie M. Williams | 39 | Wife | — | Nebraska |
| 37 | John Jr. Williams | 19 | Son | — | Nebraska |
| 38 | Wilbur Williams | 17 | Son | — | Nebraska |
| 39 | Robert Williams | 17 | Son | — | Nebraska |
| 40 | William Williams | 15 | Son | — | Nebraska |
Pedigree Summary
Thomas + 1 sibling
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)