WM
William Mcdermott — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Harris-County, Texas
Our Model Tree links this William Mcdermott across the 1930 and 1940 US Censuses in Harris-County, Texas (XGBoost, ~Confirmed) — first a head (b.~1885), then head of a 7-person household.
Age 55
b. ~1885
Male
Head
Born: Kansas
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Harris-County, Texas |
| Surname | McDermott |
| Given Name | William |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 55 |
| Marital Status | Married |
| Birthplace | Kansas |
| 1935 Residence (City) | Houston |
| 1935 Residence (County) | Harris |
| Additional Details | |
| Occupation | Carpenter |
| Industry | Building Trades |
| Class of Worker | PW |
| Income (1939) | 508 |
| Highest Grade | 8 |
| 1935 Residence | Same Place |
| Birth State | Kansas |
| Birth Country | United States |
| Birthplace (normalized) | kansas |
| Occupation | Carpenter |
| Township / Ward | Houston |
| Est. Birth Year | ~1885 |
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 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| William Mcdermott | Head | — | 55 | ~1885 |
| Margie Mcdermott | Daughter | — | 18 | ~1922 |
| Helen Mcdermott | Spouse | — | 46 | ~1894 |
| Audrey Mcdermott | Daughter | — | 13 | ~1927 |
| Gerald Mcdermott | Son | — | 16 | ~1924 |
| Jerry Mcdermott | Son | — | 20 | ~1920 |
| Marie Mcdermott | Daughter | — | 14 | ~1926 |
Census Appearances
1930
Harris, Texas
Head, age 44
Harris, Texas · implied b. ~1886 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McDermott |
| Given Name | William M |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 44 |
| Marital Status | Married |
| Birthplace | Kansas |
| Age at First Marriage | 32 |
| Father's Birthplace | Canada |
| Mother's Birthplace | Missouri |
| Occupation | Carpenter |
| Industry | House |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 1000 |
| Radio Set | R |
| Veteran | No |
| Birth State | Kansas |
| Birth Country | United States |
| Birthplace (normalized) | kansas |
1940
Harris-County, Texas
Head, age 55
Harris-County, Texas · implied b. ~1885 — 7 household members
| Surname | McDermott |
| Given Name | William |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 55 |
| Marital Status | Married |
| Birthplace | Kansas |
| 1935 Residence (City) | Houston |
| 1935 Residence (County) | Harris |
| Occupation | Carpenter |
| Industry | Building Trades |
| Class of Worker | PW |
| Income (1939) | 508 |
| Highest Grade | 8 |
| 1935 Residence | Same Place |
| Birth State | Kansas |
| Birth Country | United States |
| Birthplace (normalized) | kansas |
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 William Mcdermott across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
William Mcdermott
Head · 1940 · age 55 · b. ~1885 · Texas
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Harris-County, Texas
Open full size
1940 US Federal Census — Harris-County, Texas
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-04191-00128)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Betty Jo Brock | 5 | daughter | — | Texas |
| 2 | Alton A Brock | 1 | son | — | Texas |
| 3 | Henry Duncan | 52 | Head | Printer Ruler | Georgia |
| 4 | Carrie Duncan | 45 | Wife | — | Texas |
| 5 | Mozon Duncan | 22 | Son | Salesman | Texas |
| 6 | Aubrey Duncan | 19 | Son | Lithographer | Texas |
| 7 | Lewis Duncan | 16 | Son | — | Texas |
| 8 | Granville H Cassil | 34 | Head | Clerk | Texas |
| 9 | Willie Mae Cassil | 35 | Wife | — | Texas |
| 10 | Doris Cassil | 9 | daughter | — | Texas |
| 11 | Carolyn Cassil | 5 | daughter | — | Texas |
| 12 | Jerry Cassil | 2 | daughter | — | Texas |
| 13 | Nona Huffman | 20 | Sister in law | Waitress | Texas |
| 14 | Clyde Dykes | 32 | Head | Machinist | Georgia |
| 15 | Frances Dykes | 27 | Wife | — | Georgia |
| 16 | Anna Sue Dykes | 0 | daughter | — | Georgia |
| 17 | Charlie Brauer | 24 | Brother in law | Shipping Clerk | Georgia |
| 18 | Gladys Brauer | 21 | Sister | Saleslady | Georgia |
| 19 | Hubert Welch | 23 | Head | Salesman | Texas |
| 20 | Farina Welch | 19 | Wife | Waitress | Texas |
| 21 | Mary M Shelby | 71 | Head | — | Missouri |
| 22 | Milton Wortham | 22 | Head | Truck Driver | Texas |
| 23 | Margaret Wortham | 19 | Wife | — | Texas |
| 24 | Madeline Wortham | 3 | daughter | — | Texas |
| 25 | Milton Ray Wortham | 2 | son | — | Texas |
| 26 | Clifford Jacobson | 30 | Head | Carpenter | Alabama |
| 27 | Vernelle Jacobson | 34 | Sister | — | Alabama |
| 28 | Ray Jones | 25 | Lodger | Engineer | Texas |
| 29 | Ellen Jones | 20 | Lodger | — | Texas |
| 30 | Alene Jones | 2 | Lodger | — | Texas |
| 31 | William Mcdermott THIS PERSON | 55 | Head | Carpenter | Kansas |
| 32 | Helen Mcdermott | 46 | Wife | — | Germany |
| 33 | Jerry Mcdermott | 20 | Son | Printer | Texas |
| 34 | Margie Mcdermott | 18 | daughter | Saleslady | Texas |
| 35 | Gerald Mcdermott | 16 | Son | — | Texas |
| 36 | Marie R Mcdermott | 14 | daughter | — | Texas |
| 37 | Audrey Mcdermott | 13 | daughter | — | Texas |
| 38 | Cicero High | 35 | Head | Contractor | Texas |
| 39 | Maggie High | 28 | Wife | — | Texas |
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)