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Mary Monroe — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Oklahoma-County, Oklahoma
Our Model Tree links this Mary Monroe across the 1930 and 1940 US Censuses in Oklahoma-County, Oklahoma (XGBoost, ~Confirmed) — first a daughter (b.~1930), then head of a 8-person household.
Age 10
b. ~1930
Female
Daughter
Born: Oklahoma
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Oklahoma-County, Oklahoma |
| Surname | Monroe |
| Given Name | Mary Lou |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Oklahoma |
| 1935 Residence (City) | Oklahoma City |
| 1935 Residence (County) | Oklahoma |
| Additional Details | |
| Highest Grade | Yes 4 |
| 1935 Residence | Same House |
| Birth State | Oklahoma |
| Birth Country | United States |
| Birthplace (normalized) | oklahoma |
| Township / Ward | Oklahoma City |
| Est. Birth Year | ~1930 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Fred Monroe | Son | — | 1 | ~1939 |
| H Monroe | Head | — | 46 | ~1894 |
| Lila Monroe | Daughter | — | 15 | ~1925 |
| Mary Monroe | Daughter | — | 10 | ~1930 |
| Lillian Monroe | Daughter | — | 3 | ~1937 |
| Floyd Monroe | Son | — | 12 | ~1928 |
| Marie Monroe | Spouse | — | 34 | ~1906 |
| Nancy Monroe | Daughter | — | 5 | ~1935 |
Census Appearances
1930
Oklahoma, Oklahoma
Daughter, age
Oklahoma, Oklahoma · implied b. ~1930 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Monroe |
| Given Name | Mary Lou |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 0 |
| Marital Status | Single |
| Birthplace | Oklahoma |
| Father's Birthplace | Indiana |
| Mother's Birthplace | California |
| Birth State | Oklahoma |
| Birth Country | United States |
| Birthplace (normalized) | oklahoma |
1940
Oklahoma-County, Oklahoma
Daughter, age 10
Oklahoma-County, Oklahoma · implied b. ~1930 — 8 household members
| Surname | Monroe |
| Given Name | Mary Lou |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Oklahoma |
| 1935 Residence (City) | Oklahoma City |
| 1935 Residence (County) | Oklahoma |
| Highest Grade | Yes 4 |
| 1935 Residence | Same House |
| Birth State | Oklahoma |
| Birth Country | United States |
| Birthplace (normalized) | oklahoma |
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 Monroe across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Monroe
Daughter · 1940 · age 10 · b. ~1930 · Oklahoma
★ You are viewing this record
Sibling
Fred Monroe
Sibling · 1940 · age 1
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lillian Monroe
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lila Monroe
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Floyd Monroe
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Nancy Monroe
Sibling · 1940 · age 5
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 — Oklahoma-County, Oklahoma
Open full size
1940 US Federal Census — Oklahoma-County, Oklahoma
Page Contents
38 people indexed on this census page (nara:1940:m-t0627-03344-00890)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Katherine Jodlowski | 40 | Head | House Maid | Texas |
| 2 | Helen Jodlowski | 22 | Daughter | Waitress | Oklahoma |
| 3 | Eula Jodlowski | 15 | Daughter | — | Oklahoma |
| 4 | Johnnie Jodlowski | 13 | Son | — | Oklahoma |
| 5 | Susie Layman | 24 | Head | House Maid | Oklahoma |
| 6 | Claris Layman | 7 | Son | — | Oklahoma |
| 7 | Norma Jean Layman | 5 | Daughter | — | Oklahoma |
| 8 | Cecil Kendall | 41 | Lodger | Mortar Mixer | Oklahoma |
| 9 | A. B. Baker | 42 | Head | Florist | Ohio |
| 10 | Goldie Baker | 37 | Wife | — | Missouri |
| 11 | Walter Baker | 21 | Son | Florist | Missouri |
| 12 | Gala Mae Baker | 17 | Daughter | — | Missouri |
| 13 | Maxine Baker | 13 | Daughter | — | Oklahoma |
| 14 | Billy Asa Baker | 3 | Son | — | Oklahoma |
| 15 | Franklin Pueppke | 42 | Head | Mechanic Laborer | Nebraska |
| 16 | Regina Pueppke | 38 | Wife | — | Wisconsin |
| 17 | Donald Pueppke | 15 | Son | — | N. Dakota |
| 18 | Lyle Pueppke | 13 | Son | — | N. Dakota |
| 19 | Irene Pueppke | 11 | Daughter | — | N. Dakota |
| 20 | H. E. Ragland | 46 | Head | Attorney At Law | Oklahoma |
| 21 | Jessie Ragland | 33 | Wife | — | Texas |
| 22 | Alice Rose Ragland | 9 | Daughter | — | Oklahoma |
| 23 | Walter Ragland | 7 | Son | — | Oklahoma |
| 24 | Roger Ragland | 1 | Son | — | Oklahoma |
| 25 | Rosa F. Ragland | 65 | Mother | — | Kansas |
| 26 | J. Lee Oldaker | 32 | Head | Manager Auto Metal Division | Missouri |
| 27 | Nadine Oldaker | 27 | Wife | — | Oklahoma |
| 28 | Tommy Lee Oldaker | 4 | Son | — | Oklahoma |
| 29 | H. G. Monroe | 46 | Head | Caretaker | Indiana |
| 30 | Marie Monroe | 34 | Wife | — | California |
| 31 | Lila June Monroe | 15 | Daughter | — | Illinois |
| 32 | Floyd Monroe | 12 | Son | — | Illinois |
| 33 | Mary Lou Monroe THIS PERSON | 10 | Daughter | — | Oklahoma |
| 34 | Nancy Jo Monroe | 5 | Daughter | — | Oklahoma |
| 35 | Lillian Ann Monroe | 3 | Daughter | — | Oklahoma |
| 36 | Fred William Monroe | 1 | Son | — | Oklahoma |
| 37 | L. M. Layman | 32 | Head | Nurseryman | Oklahoma |
| 38 | Jessie Layman | 23 | Wife | — | Virginia |
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)