MM
Mary Mcmahon — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Sequoyah, Oklahoma
Our Model Tree links this Mary Mcmahon across the 1920, 1930 and 1940 US Censuses in Sequoyah, Oklahoma (XGBoost, ~Confirmed) — first a spouse (b.~1874), then head of a 8-person household.
Age 56
b. ~1874
Female
Spouse
Born: Arkansas
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Sequoyah, Oklahoma |
| Surname | McMahon |
| Given Name | Mary E |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 56 |
| Marital Status | Married |
| Birthplace | Arkansas |
| Age at First Marriage | 17 |
| Father's Birthplace | Georgia |
| Mother's Birthplace | South Carolina |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | Arkansas |
| Birth Country | United States |
| Birthplace (normalized) | arkansas |
| Township / Ward | Sallisaw City |
| Est. Birth Year | ~1874 |
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 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Lucy Mcmahon | Daughter | — | 24 | ~1906 |
| Ira Mcmahon | Daughter | — | 12 | ~1918 |
| Letha Mcmahon | Daughter | — | 16 | ~1914 |
| Lois Mcmahon | Daughter | — | 9 | ~1921 |
| Sida Mcmahon | Head | — | 60 | ~1870 |
| Charles Mcmahon | Son | — | 19 | ~1911 |
| Eugene Mcmahon | Son | — | 21 | ~1909 |
| Mary Mcmahon | Spouse | — | 56 | ~1874 |
Census Appearances
1920
Sequoyah, Oklahoma
Spouse, age 48
Sequoyah, Oklahoma · implied b. ~1872 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McMahan |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 48 |
| Marital Status | Married |
| Birthplace | Arkansas |
| Father's Birthplace | Georgia |
| Mother's Birthplace | So. Carolina |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Arkansas |
| Birth Country | United States |
| Birthplace (normalized) | arkansas |
1930
Sequoyah, Oklahoma
Spouse, age 56
Sequoyah, Oklahoma · implied b. ~1874 — 8 household members
| Surname | McMahon |
| Given Name | Mary E |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 56 |
| Marital Status | Married |
| Birthplace | Arkansas |
| Age at First Marriage | 17 |
| Father's Birthplace | Georgia |
| Mother's Birthplace | South Carolina |
| Can Read/Write | Yes |
| Birth State | Arkansas |
| Birth Country | United States |
| Birthplace (normalized) | arkansas |
1940
Sequoyah-County, Oklahoma
Head, age 66
Sequoyah-County, Oklahoma · implied b. ~1874 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McMahan |
| Given Name | Mary D |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 66 |
| Marital Status | Widowed |
| Birthplace | Arkansas |
| 1935 Residence (City) | Sallisaw |
| 1935 Residence (County) | Sequoyah |
| Industry | 0 |
| Highest Grade | Hs 3 |
| 1935 Residence | Same place |
| Birth State | Arkansas |
| Birth Country | United States |
| Birthplace (normalized) | arkansas |
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 Mcmahon across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Mcmahon
Spouse · 1930 · age 56 · b. ~1874 · Oklahoma
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1930 US Federal Census — Sequoyah, Oklahoma
Open full size
1930 US Federal Census — Sequoyah, Oklahoma
Page Contents
50 people indexed on this census page (ia:1930:15thcensus1931unit:0911)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Theodore M Sanders | 15 | Son | — | Oklahoma |
| 2 | Noble | 33 | Head | Agent | Oklahoma |
| 3 | Eliza Noble | 29 | Wife | Salesman | Oklahoma |
| 4 | Ollie B Noble | 9 | Daughter | — | Oklahoma |
| 5 | Mildred W Noble | 6 | Daughter | — | Oklahoma |
| 6 | George E Jr Noble | 4 | Son | — | Oklahoma |
| 7 | Truman G Noble | 2 | Son | — | Oklahoma |
| 8 | Mattie T Mitchell | 59 | Mother-in-law | — | Mississippi |
| 9 | Julia A Bumpe | 62 | Sister-in-law | — | Mississippi |
| 10 | Sida Mcmahon | 60 | Head | Laborer | Kentucky |
| 11 | Mary E Mcmahon THIS PERSON | 56 | Wife | — | Arkansas |
| 12 | Lucy M Mcmahon | 24 | Daughter | Servant | Arkansas |
| 13 | Eugene Mcmahon | 21 | Son | Brakeman | Arkansas |
| 14 | Charles E Mcmahon | 19 | Son | Salesman | Oklahoma |
| 15 | Letha Mcmahon | 16 | Daughter | Servant | Oklahoma |
| 16 | Ira Mcmahon | 12 | Daughter | — | Oklahoma |
| 17 | Lois A Mcmahon | 9 | Daughter | — | Oklahoma |
| 18 | Pete P Perry | 67 | Head | — | Arkansas |
| 19 | Theodore Perry | 27 | Nephew | — | Oklahoma |
| 20 | Francis E Strickland | 35 | Head | Book Keeper | Missouri |
| 21 | Lucy Strickland | 30 | Wife | Night Chief | Arkansas |
| 22 | Jason E Strickland | 8 | Son | — | Oklahoma |
| 23 | Sara J Strickland | 6 | Daughter | — | Oklahoma |
| 24 | Gail M Taff | 29 | Head | Lineman | Oklahoma |
| 25 | Josephine Taff | 23 | Wife | — | Arkansas |
| 26 | Gail M Jr Taff | 1 | Son | — | Oklahoma |
| 27 | David G Taff | 0 | Son | — | Oklahoma |
| 28 | Jesse Rider | 34 | Head | Laborer | Oklahoma |
| 29 | Victoria Rider | 30 | Wife | — | Oklahoma |
| 30 | Helen L Rider | 8 | Daughter | — | Oklahoma |
| 31 | Bernice Rider | 7 | Daughter | — | Oklahoma |
| 32 | John R Rider | 5 | Son | — | Oklahoma |
| 33 | Jesse Jr Rider | 0 | Son | — | Oklahoma |
| 34 | Chabity Choate | 53 | Head | House Keeper | Arkansas |
| 35 | Robert J Ware | 38 | Head | Barber | Arkansas |
| 36 | Mecie E Ware | 32 | Wife | — | Oklahoma |
| 37 | Dale E Ware | 9 | Son | — | Oklahoma |
| 38 | Will Webb | 45 | Head | Laborer | Arkansas |
| 39 | Orrey Webb | 39 | Wife | — | Oklahoma |
| 40 | Eugene Webb | 18 | Son | — | Oklahoma |
| 41 | Leland Webb | 9 | Son | — | Oklahoma |
| 42 | Leola Enlow | 23 | Daughter | Servant | Oklahoma |
| 43 | Bert E Brock | 18 | Step-son | — | Oklahoma |
| 44 | Buel A Brock | 16 | Step-son | — | Oklahoma |
| 45 | Arten J Brock | 14 | Step-son | — | Oklahoma |
| 46 | Lady M Enlow | 5 | Step-daughter | — | Oklahoma |
| 47 | Mary E Harrison | 71 | Head | — | Alabama |
| 48 | Frank Harrison | 41 | Son | Drayman | Arkansas |
| 49 | Idora R Brown | 44 | Daughter | Seamstress | Arkansas |
| 50 | Bernice B Brown | 22 | Daughter | — | Oklahoma |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1930 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)