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Mary Lamb — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Grayson-County, Texas
Our Model Tree links this Mary Lamb across the 1930 and 1940 US Censuses in Grayson-County, Texas (XGBoost, ~Confirmed) — first a daughter (b.~1920), then head of a 9-person household.
Age 20
b. ~1920
Female
Daughter
Born: Texas
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Grayson-County, Texas |
| Surname | Lamb |
| Given Name | Mary Idell |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Texas |
| 1935 Residence (City) | JP 1 |
| 1935 Residence (County) | Grayson |
| Additional Details | |
| Highest Grade | H 8 |
| 1935 Residence | Same place |
| Birth State | Texas |
| Birth Country | United States |
| Birthplace (normalized) | texas |
| Township / Ward | Jp 1 |
| Est. Birth Year | ~1920 |
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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Lamb | Daughter | — | 20 | ~1920 |
| Joe Lamb | Son | — | 4 | ~1936 |
| Glenn Lamb | Son | — | 9 | ~1931 |
| Carl Lamb | Son | — | 12 | ~1928 |
| Maude Lamb | Spouse | — | 51 | ~1889 |
| Robert Lamb | Head | — | 55 | ~1885 |
| Hazel Lamb | Daughter | — | 14 | ~1926 |
| Hunter Lamb | Son | — | 23 | ~1917 |
| Vernon Lamb | Son | — | 17 | ~1923 |
Census Appearances
1930
Grayson, Texas
Daughter, age 10
Grayson, Texas · implied b. ~1920 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lamb |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Texas |
| Father's Birthplace | Texas |
| Mother's Birthplace | Texas |
| Can Read/Write | Yes |
| Birth State | Texas |
| Birth Country | United States |
| Birthplace (normalized) | texas |
1940
Grayson-County, Texas
Daughter, age 20
Grayson-County, Texas · implied b. ~1920 — 9 household members
| Surname | Lamb |
| Given Name | Mary Idell |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Texas |
| 1935 Residence (City) | JP 1 |
| 1935 Residence (County) | Grayson |
| Highest Grade | H 8 |
| 1935 Residence | Same place |
| Birth State | Texas |
| Birth Country | United States |
| Birthplace (normalized) | texas |
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 Lamb across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Lamb
Daughter · 1940 · age 20 · b. ~1920 · Texas
★ You are viewing this record
Sibling
Glenn Lamb
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Carl Lamb
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joe Lamb
Sibling · 1940 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Hazel Lamb
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Vernon Lamb
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Hunter Lamb
Sibling · 1940 · age 23
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 — Grayson-County, Texas
Open full size
1940 US Federal Census — Grayson-County, Texas
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-04043-00504)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Joseph M Hall | 51 | Head | Car Repair | Arkansas |
| 2 | Lula D Hall | 46 | Wife | — | Georgia |
| 3 | Don Raymond Hall | 20 | Son | Farmer | Missouri |
| 4 | Norma Fay Hall | 13 | Daughter | — | Oklahoma |
| 5 | Glenda Jo Hall | 8 | Daughter | — | Texas |
| 6 | Ruby Southerland | 25 | Daughter | — | Missouri |
| 7 | Nina Fay Southerland | 8 | Daughter | — | Texas |
| 8 | Myron E Cook | 18 | Nephew | — | Texas |
| 9 | Helen Francis Cook | 14 | Niece | — | Texas |
| 10 | Annie May Cook | 12 | Niece | — | Texas |
| 11 | Robert E Lamb | 55 | Head | Farmer | Texas |
| 12 | Maude Ellen Lamb | 51 | Wife | — | Texas |
| 13 | Hunter Eugene Lamb | 23 | Son | — | Texas |
| 14 | Mary Idell Lamb THIS PERSON | 20 | Daughter | — | Texas |
| 15 | Vernon Allen Lamb | 17 | Son | Farmer | Texas |
| 16 | Hazel Maurine Lamb | 14 | Daughter | — | Texas |
| 17 | Carl Arlen Lamb | 12 | Son | — | Texas |
| 18 | Glenn Charles Lamb | 9 | Son | — | Texas |
| 19 | Joe Donald Lamb | 4 | Son | — | Texas |
| 20 | James C Howell | 57 | Head | Farmer | Texas |
| 21 | Dewell A Howell | 21 | Son | Farmer | Texas |
| 22 | Eurlain Howell | 8 | Son | — | Texas |
| 23 | Julia Howell | 1 | Granddaughter | — | Texas |
| 24 | Douglas Howell | 2 | Son | — | Texas |
| 25 | Tray C Ober | 45 | Head | Farmer | Arkansas |
| 26 | Lila Ober | 40 | Wife | — | Arkansas |
| 27 | Irene May Ober | 17 | Daughter | — | Oklahoma |
| 28 | Delma Ober | 15 | Daughter | — | Oklahoma |
| 29 | J C Jr Ober | 13 | Son | — | Oklahoma |
| 30 | Edna Jean Ober | 11 | Daughter | — | Texas |
| 31 | Alitha May Ober | 9 | Daughter | — | Texas |
| 32 | George Ober | 6 | Son | — | Texas |
| 33 | Winona Ober | 4 | Daughter | — | Texas |
| 34 | James S Morris | 40 | Head | Common Labor | Arkansas |
| 35 | Caroline Morris | 27 | Wife | — | Georgia |
| 36 | Ruth Pauline Morris | 17 | Daughter | — | Texas |
| 37 | J D Jr Morris | 14 | Son | — | Texas |
| 38 | Paul Dillion Morris | 12 | Son | — | Texas |
| 39 | Robert S Morris | 9 | Son | — | Texas |
| 40 | Franklin N Morris | 2 | Son | — | Texas |
Related Census Records
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)