MD
Mary Dunlap — 1940 US Census Record
Model Tree available1940 United States Federal Census · Cameron-County, Texas
Our Model Tree links this Mary Dunlap across the 1920, 1930 and 1940 US Censuses in Cameron-County, Texas (XGBoost, ~Confirmed), with identified parents Bailey & Rollie — first a daughter (b.~1915), then head of a 4-person household.
Age 25
b. ~1915
Female
Daughter
Born: Texas
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cameron-County, Texas |
| Surname | Dunlap |
| Given Name | Mary Jo |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Texas |
| 1935 Residence (City) | Laferia, city |
| 1935 Residence (County) | Cameron |
| Additional Details | |
| Occupation | Bookkeeper |
| Industry | Bank |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1500 |
| Highest Grade | C 5 |
| 1935 Residence | Same House |
| Birth State | Texas |
| Birth Country | United States |
| Birthplace (normalized) | texas |
| Occupation | Bookkeeper |
| Township / Ward | Laferia City |
| Est. Birth Year | ~1915 |
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 Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Dunlap | Daughter | — | 25 | ~1915 |
| Bailey Dunlap | Son | — | 12 | ~1928 |
| Josephine Dunlap | Spouse | — | 50 | ~1890 |
| Bailey Dunlap | Head | — | 52 | ~1888 |
Census Appearances
1920
Cameron, Texas
Daughter, age 5
Cameron, Texas · implied b. ~1915 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Dunlap |
| Given Name | Mary Josephine |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Texas |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Colorado |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Texas |
| Birth Country | United States |
| Birthplace (normalized) | texas |
1930
Cameron, Texas
Daughter, age 15
Cameron, Texas · implied b. ~1915 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Dunlap |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Texas |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Colorado |
| Can Read/Write | Yes |
| Birth State | Texas |
| Birth Country | United States |
| Birthplace (normalized) | texas |
1940
Cameron-County, Texas
Daughter, age 25
Cameron-County, Texas · implied b. ~1915 — 4 household members
| Surname | Dunlap |
| Given Name | Mary Jo |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Texas |
| 1935 Residence (City) | Laferia, city |
| 1935 Residence (County) | Cameron |
| Occupation | Bookkeeper |
| Industry | Bank |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1500 |
| Highest Grade | C 5 |
| 1935 Residence | Same House |
| 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 Dunlap across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Bailey Dunlap (~0.92 confidence) and father Rollie Dunlap (~0.92 confidence) and mother Josephine Dunlap (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Bailey Dunlap
b. ~1887
Source father
● Household
· direct · ~0.92
Father
Rollie Dunlap
b. ~1888
Source father
● Household
· direct · ~0.92
Mother
Josephine Dunlap
b. ~1893
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Dunlap
Daughter · 1940 · age 25 · b. ~1915 · Texas
★ You are viewing this record
Sibling
Bailey Dunlap
Sibling · 1940 · age 12
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 — Cameron-County, Texas
Open full size
1940 US Federal Census — Cameron-County, Texas
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-04000-00515)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Mayo, Earl D. Mayo | 8 | Son | — | Texas |
| 2 | Lynn E. Mitchell | 22 | Head | Truck Driver | Tennessee |
| 3 | Hazel Mitchell | 18 | Wife | — | Texas |
| 4 | George H. Eamon | 75 | Head | — | Michigan |
| 5 | Jennie S. Eamon | 75 | Wife | — | New York |
| 6 | Greta Mae Harris | 44 | Daughter | Proprietor | Canada-Eng |
| 7 | Manford R. Pelphrey | 64 | Head | Proprietor | Kentucky |
| 8 | Rosa L. Pelphrey | 63 | Wife | Housekeeper | Missouri |
| 9 | Harry L. Beecher | 24 | Head | Laborer | Nebraska |
| 10 | Ruby A. Beecher | 24 | Wife | — | Nebraska |
| 11 | Gary L. Beecher | 1 | Son | — | Nebraska |
| 12 | Will E. Bilderback | 53 | Head | Night Watchman | Texas |
| 13 | Rosa Bilderback | 46 | Wife | — | Texas |
| 14 | Joyce Bilderback | 13 | Daughter | — | Texas |
| 15 | Milburn E. Bilderback | 24 | Head | Truck Driver | Texas |
| 16 | Annie Bell Bilderback | 21 | Wife | — | Oklahoma |
| 17 | Ora Mae Bilderback | 2 | Daughter | — | Texas |
| 18 | Bill Pritkuna|Pritkura | 35 | Head | Machinist | Oklahoma |
| 19 | Richard H. Morris | 48 | Head | Proprietor | Texas |
| 20 | Annie Morris | 46 | Wife | — | Texas |
| 21 | Richard Jr. Morris | 21 | Son | Bookkeeper | Texas |
| 22 | Charlene (A.) Morris | 19 | Daughter | — | Texas |
| 23 | Ragia Morris | 17 | Son | — | Texas |
| 24 | Emma G. Durham | 73 | Head | — | Alabama |
| 25 | Lloyd Elliot | 87 | Head | — | New Hampshire |
| 26 | Mildred Meyers | 52 | Head | — | Nebraska |
| 27 | Bailey H. Dunlap | 52 | Head | Banker | Illinois |
| 28 | Josephine Dunlap | 50 | Wife | — | Colorado |
| 29 | Mary Jo Dunlap THIS PERSON | 25 | Daughter | Bookkeeper | Texas |
| 30 | Bailey H. Jr. Dunlap | 12 | Son | — | Texas |
| 31 | Euchio Martinez | 36 | Head | Truck Driver | Mexico |
| 32 | Candelaria Martinez | 29 | Wife | Maid | Mexico |
| 33 | Martin B. Foster | 35 | Head | Laborer | Texas |
| 34 | Virgie Foster | 31 | Wife | — | Texas |
| 35 | John E. Foster | 15 | Son | — | Texas |
| 36 | Raymond Foster | 13 | Son | — | Texas |
| 37 | Barney Foster | 10 | Son | — | Texas |
| 38 | Robert P. Foster | 42 | Head | Laborer | Texas |
| 39 | Toxie Mae Foster | 39 | Wife | — | Texas |
| 40 | Bennie E. Foster | 12 | Son | — | Texas |
Pedigree Summary
Mary + 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)