MH
Mary Houston — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Sussex-County, Delaware
Our Model Tree links this Mary Houston across the 1930 and 1940 US Censuses in Sussex-County, Delaware (XGBoost, ~Confirmed) — first a daughter (b.~1925), then head of a 10-person household.
Age 15
b. ~1925
Female
Daughter
Born: Delaware
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Sussex-County, Delaware |
| Surname | Houston |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Delaware |
| 1935 Residence (City) | 2nd District |
| 1935 Residence (County) | Sussex |
| Additional Details | |
| Occupation | S |
| Industry | 6 |
| Highest Grade | No 7 |
| 1935 Residence | Same place |
| Birth State | Delaware |
| Birth Country | United States |
| Birthplace (normalized) | delaware |
| Occupation | S |
| Township / Ward | 2Nd District |
| Est. Birth Year | ~1925 |
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.
10 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Elizabeth Houston | Daughter | — | 19 | ~1921 |
| Owens Houston | Son | — | 22 | ~1918 |
| Margaret Houston | Daughter | — | 13 | ~1927 |
| Mary Houston | Daughter | — | 15 | ~1925 |
| Florence Houston | Daughter | — | 9 | ~1931 |
| Phillip Houston | Head | — | 46 | ~1894 |
| Harriett Houston | Daughter | — | 4 | ~1936 |
| Robert Houston | Son | — | 17 | ~1923 |
| Harriett Houston | Spouse | — | 44 | ~1896 |
| Elsie Houston | Daughter | — | 7 | ~1933 |
Census Appearances
1930
Sussex, Delaware
Daughter, age 5
Sussex, Delaware · implied b. ~1925 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Houston |
| Given Name | Mary R |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Delaware |
| Father's Birthplace | Delaware |
| Mother's Birthplace | Delaware |
| Birth State | Delaware |
| Birth Country | United States |
| Birthplace (normalized) | delaware |
1940
Sussex-County, Delaware
Daughter, age 15
Sussex-County, Delaware · implied b. ~1925 — 10 household members
| Surname | Houston |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Delaware |
| 1935 Residence (City) | 2nd District |
| 1935 Residence (County) | Sussex |
| Occupation | S |
| Industry | 6 |
| Highest Grade | No 7 |
| 1935 Residence | Same place |
| Birth State | Delaware |
| Birth Country | United States |
| Birthplace (normalized) | delaware |
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 Mary Houston across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Houston
Daughter · 1940 · age 15 · b. ~1925 · Delaware
★ You are viewing this record
Sibling
Florence Houston
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Owens Houston
Sibling · 1940 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Houston
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Harriett Houston
Sibling · 1940 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Houston
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Elsie Houston
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Elizabeth Houston
Sibling · 1940 · age 19
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 — Sussex-County, Delaware
Open full size
1940 US Federal Census — Sussex-County, Delaware
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00547-00241)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Irene Smith | 24 | Wife | H | Delaware |
| 2 | Carroll Smith | 10 | Son | — | Delaware |
| 3 | Peggy Smith | 6 | Daughter | — | Delaware |
| 4 | Robbie Smith | 1 | Son | — | Delaware |
| 5 | Wilhelmina Willey | 62 | Mother-in-law | U | Delaware |
| 6 | Lawrence Willey | 33 | Head | Cut Timber | Delaware |
| 7 | Gladys Willey | 23 | Wife | H | Delaware |
| 8 | Gloria Willey | 2 | Daughter | — | Delaware |
| 9 | Bill Heffner | 81 | Head | — | Hungary |
| 10 | Barbara Heffner | 75 | Wife | — | Hungary |
| 11 | Wm Walter | 38 | Head | Farmer | Kansas |
| 12 | Ethel Walter | 36 | Wife | H | West Virginia |
| 13 | Ena Walter | 16 | Daughter | H | Delaware |
| 14 | Naomi Walter | 13 | Daughter | — | Delaware |
| 15 | Aileen Walter | 10 | Daughter | — | Delaware |
| 16 | Wm Richard Walter | 1 | Son | — | Delaware |
| 17 | Frank D Biddle | 31 | Head | Farmer | Delaware |
| 18 | Viola Biddle | 24 | Wife | H | Maryland |
| 19 | Frankie Biddle | 7 | Son | — | Pennsylvania |
| 20 | Mary E Biddle | 6 | Daughter | — | Pennsylvania |
| 21 | Charles Biddle | 3 | Son | — | Pennsylvania |
| 22 | Larry Biddle | 2 | Son | — | Delaware |
| 23 | John Peterson | 85 | Head | U | Holland |
| 24 | Josephine Peterson | 69 | Wife | U | Holland |
| 25 | Anna Anderson | 79 | Sister-in-law | U | Holland |
| 26 | Elmer E Ulmer | 67 | Head | Farmer | Ohio |
| 27 | Laura M Ulmer | 61 | Wife | H | Ohio |
| 28 | George Morgan | 49 | Head | Day Labor | Delaware |
| 29 | Phillip Houston | 46 | Head | Farmer | Delaware |
| 30 | Harriett Houston | 44 | Wife | H | New Jersey |
| 31 | Owens Houston | 22 | Son | Coning Machine | Delaware |
| 32 | Elizabeth Houston | 19 | Daughter | H | Pennsylvania |
| 33 | Robert Houston | 17 | Son | S | Delaware |
| 34 | Mary Houston THIS PERSON | 15 | Daughter | S | Delaware |
| 35 | Margaret Houston | 13 | Daughter | — | Delaware |
| 36 | Florence Houston | 9 | Daughter | — | Delaware |
| 37 | Elsie Houston | 7 | Daughter | — | Delaware |
| 38 | Harriett Houston | 4 | Daughter | — | Delaware |
| 39 | Edmund Pettyjohn | 27 | Head | Day Labor | Delaware |
| 40 | Edie Pettyjohn | 19 | Lodger | — | Delaware |
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)